Dell Compellent Sc4020 Storage Center 7.1 Release Notes User Manual Sc2000 Notes4 En Us
User Manual: Dell dell-compellent-sc4020 - Dell Storage Center 7.1 Release Notes
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- Dell Storage Center 7.1 Release Notes
- Document Revision History
- Supported Storage Systems
- New in This Release
- Dell Storage Manager 2016 R2
- SC7020 Storage System
- SC4020 Storage Systems with Front-End SAS Connectivity
- 32 Gb FC I/O Card Support
- 4Kn Drive Support
- Cross-Platform Replication
- Data Center Bridging (DCB) Support
- Data Progression Improvements
- Data Reduction
- Drive Age Reporting
- Federation Live Migrate
- IPv6 Support for Fault Domains and Pinging
- Live Volume with Auto Failover in Microsoft Server Enviroments
- Online Import of Volumes from PS Series Storage Arrays
- Renaming Replays to Snapshots
- SED Rekey
- SNMPv3 Support
- Storage Redundancy Levels
- T10-PI Support
- Volume QoS Profiles
- VMware Virtual Volumes Support
- Storage Center 7.1 Feature Availability and Licenses
- Storage Center 7.1 Scalability
- Fixed Issues
- Fixed Issues Related to Data Reduction
- Fixed Issues Related to Hardware
- Fixed Issues Related to Replication and Live Volume
- Fixed Issues Related to Alerts and Reporting
- Fixed Issues Related to Security
- Fixed Issues Related to Storage Management
- Fixed Issues Related to Updating, SupportAssist, and Licensing
- Fixed Issues Related to User Management
- Open Issues
- Storage Center Update Information
- Support Resources
Dell Storage Center 7.1
Release Notes
This document describes the new features, enhancements, xed issues, and open issues in Storage Center 7.1.
Current Version: 7.1.20
Release Date: 2017 - 07
Previous Version: 7.1.12
Contents
Document Revision History......................................................................................................................................................1
Supported Storage Systems................................................................................................................................................... 2
New in This Release................................................................................................................................................................ 2
Storage Center 7.1 Feature Availability and Licenses................................................................................................................5
Storage Center 7.1 Scalability...................................................................................................................................................9
Fixed Issues............................................................................................................................................................................11
Open Issues........................................................................................................................................................................... 21
Storage Center Update Information...................................................................................................................................... 24
Support Resources............................................................................................................................................................... 24
Document Revision History
Document Number: 680-021-019
Revision Date Description
A August 2016 Initial release of Storage Center 7.1
B September 2016 Updated for Storage Center 7.1.2
C September 2016 Updated feature support for SC7020
D November 2016 Updated for Storage Center 7.1.3
E December 2016 Updated for Storage Center 7.1.4
F January 2017 Updated Storage Center scalability guidelines
G April 2017 Updated for Storage Center 7.1.12
H April 2017 Updated the description of a xed issue in Storage Center 7.1.12
I July 2017 Updated for Storage Center 7.1.20
J July 2017 Updated the issues xed in Storage Center 7.1.20
Document Number: 680-021-019
Rev. J
2017 - 07
Supported Storage Systems
Storage Center 7.1 is supported on the following storage systems:
• SC9000
• SC8000
• SC7020
• SC4020
• SCv2000 series
New in This Release
The following features were added to Storage Center 7.1.
Dell Storage Manager 2016 R2
Dell Storage Manager 2016 R2 is required to manage storage systems running Storage Center 7.1.
Storage Center 7.1 no longer supports the browser-based GUI known as Storage Center System Manager
You must install Dell Storage Manager 2016 R2 before updating a storage system to Storage Center 7.1. If you update a storage
system to Storage Center 7.1 without using Dell Storage Manager 2016 R2, you will lose management connectivity to the storage
system.
NOTE: The storage system must be running Storage Center 6.6.4 or later to update to Storage Center 7.1.
SC7020 Storage System
Storage Center 7.1 introduces support for the SC7020 storage system.
The SC7020 consists of a 3U chassis with dual storage controllers, redundant power supplies, and up to 30 2.5-inch hot swappable
SAS hard drives. The SC7020 can be expanded up to 500 drives and it supports SC400 and SC420 12 Gb expansion enclosures and
SC280 6 Gb expansion enclosures.
NOTE: Support for upgrading a storage system with SC200 and SC220 expansion enclosures to an SC7020 storage
system is planned for a later release.
SC4020 Storage Systems with Front-End SAS Connectivity
Storage Center 7.1 adds support for SC4020 storage system models with front-end SAS I/O cards.
NOTE: An SC4020 storage system with front-end SAS connectivity does not support the Live Volume feature in Storage
Center 7.1.
32 Gb FC I/O Card Support
Storage Center 7.1 adds support for a 32 Gb Fibe Channel I/O card.
Support for the 32 Gb Fibre Channel I/O card is currently limited to SC9000 storage systems with a specic conguration of
switches and operating systems. See the Dell Storage Compatibility Matrix for more information.
4Kn Drive Support
Storage Center 7.1 adds support for native 4K sector drives.
Native 4K drives use a 4096-byte sector size instead of the legacy 512-byte sector size.
2Dell Storage Center 7.1 Release Notes
Cross-Platform Replication
The cross-platform replication feature provides a method for performing volume replication between PS Series storage arrays and
Storage Centers. This feature preserves the functional and operational models in the current replication implementation for each
storage system.
NOTE: SCv2000 series storage systems do not support cross-platform replication.
Data Center Bridging (DCB) Support
Storage Center 7.1 supports data center bridging (DCB) services.
Dell Storage Manager displays DCB information for supported I/O cards, such as switch names and features of the switch port that
an iSCSI port is plugged into. Dell Storage Manager also displays information about the Link Layer Discovery Protocol (LLDP), which
is used to help support DCB.
Data Progression Improvements
Storage Center includes changes to Data Progression that reduce the impact on Storage Center performance.
Data Progression runs daily at specied time and continues until all tasks are completed. If all the tasks are not completed, those
tasks are completed in the next Data Progression cycle.
NOTE: Data Progression still follows the schedule set on the Storage Center.
Data Reduction
Data Reduction uses compression and deduplication to decrease the amount of disk space used by volume data. Compression
reduces the amount of space used by a volume by encoding data. Deduplication nds duplicate data in pages then removes the
duplicate data, conserving the disk space that would be used by additional copies. When deduplication is used, compression is also
applied to a volume.
Drive Age Reporting
Storage Center 7.1 adds support for the Drive Age Reporting feature.
The age of each drive is displayed as Power On Time in Dell Storage Manager 2016 R2.
Federation Live Migrate
Storage Center 7.1 adds support for the Federation Live Migrate feature.
Federation Live Migrate allows for the online migration of a volume from one Storage Center to another Storage Center without
downtime or disruption to the host server.
NOTE: Federation Live Migrate is supported on SC9000, SC8000, SC7020, and SC4020 storage systems, but it is not
supported on SCv2000 series storage systems.
IPv6 Support for Fault Domains and Pinging
Storage Center 7.1 supports IPv6 addresses in iSCSI fault domains as well as other IPv6 features.
• iSCSI fault domains can be created and modied to use ports with IPv6 addresses.
• Dell Storage Manager 2016 R2 can display multiple IPv6 addresses for each physical port, as well as multiple discovered gateway
IPv6 addresses.
• Ports can be pinged using an IPv4 or IPv6 address.
NOTE: Replications between Storage Center and PS Series groups do not support IPv6.
Dell Storage Center 7.1 Release Notes 3
Live Volume with Auto Failover in Microsoft Server Enviroments
Storage Center 7.1 adds support for the Live Volume with Auto Failover feature in Microsoft server environments.
Live Volume with Auto Failover is supported in Microsoft server environments including Windows Server 2012 and Windows Server
2012 R2. In addition, Live Volume with Auto Failover is supported on both Microsoft Hyper-V and Windows clustering environments
including Windows clustering on VMware hosts using physical mode raw device mappings (pRDMs).
NOTE: Live Volume with Auto Failover in Microsoft server environments is supported on SC9000, SC8000, SC7020 and
SC4020 storage systems, but it is not supported on SCv2000 series storage systems.
Online Import of Volumes from PS Series Storage Arrays
An online import creates a destination volume, maps it to the server, then migrates the data to the destination volume.
In Storage Center 7.1, performing an online import of volumes from PS Series storage arrays is supported on Red Hat Enterprise
Linux 7.x, VMware ESXi 5.5 or later, and Windows Server 2008 R2 or later.
Renaming Replays to Snapshots
Starting in this release, Replays are now called snapshots in the Dell Storage Manager Client.
SED Rekey
Storage Center 7.1 supports enhancements for managing self-encrypting drives (SED).
NOTE: The Self-Encrypting Drives feature must be licensed to use Secure Data.
The following features have been added in Dell Storage Manager 2016 R2:
• You can specify a rekey interval for a Secure Disk folder. When that interval has been reached, a rekey is triggered on each disk in
the folder.
A Rekey checkbox has been added to the Edit Disk Folder Settings dialog box.
• You can perform an on-demand rekey of a Secure Disk folder.
A new option called Rekey Disk Folder has been added to the Disks menu when a Secure Data folder is selected.
• The process called Rescue Data allows you to copy volumes from a Secure Data folder to another folder. The target folder can be
either a secure folder or a nonsecure folder. Use the Copy Volumes to Disk Folder operation to perform rescue data.
SNMPv3 Support
Storage Center 7.1 supports the use of SNMPv3 and the conguration of SNMPv3 users and trap destinations using Dell Storage
Manager 2016 R2.
Storage Redundancy Levels
The storage redundancy recommendations and requirements for HDDs and SSDs have changed in Storage Center 7.1.
NOTE: For SC7020 storage systems, the dual redundancy level is the default for all drives.
Table 1. HDD Redundancy Recommendations and Requirements
Disk Size Redundancy Level
Up to 966 GB No recommended or required redundancy level when adding disks of this size to a new or existing
page pool
967 GB to 1.9 TB Dual redundancy is recommended when adding disks of this size to a new or existing page pool
2.0 TB or larger Dual redundancy is required when adding disks of this size to a new page pool
4Dell Storage Center 7.1 Release Notes
Disk Size Redundancy Level
2.79 TB or larger Dual redundancy is required when adding disks of this size to an existing page pool
Table 2. SSD Redundancy Recommendations and Requirements
Disk Size Redundancy Level
Up to 1.7 TB No recommended or required redundancy level when adding disks of this size to a new or existing
page pool
1.8 TB to 3.9 TB Dual redundancy is recommended when adding disks of this size to a new or existing page pool
4.0 TB or larger Dual redundancy is required when adding disks of this size to a new or existing page pool
T10-PI Support
Storage Center 7.1 adds support for T10 Protection Information (PI) capable drives.
T10 Protection Information is an end-to-end data integrity feature that protects against silent data corruption.
Volume QoS Proles
Storage Center 7.1 supports Volume QoS Proles.
When the Volume QoS Proles feature is enabled, users can create and manage proles for Quality of Service (QoS) settings using
Dell Storage Manager 2016 R2.
The volume QoS feature allows users to dene an arbitrary quality of service for volumes by setting hard limits on volume IOPS or
throughput. Using the QoS Proles feature, a user can apply QoS proles to a single volume or group of volumes.
By default, Dell Storage Manager provides a single default prole which is used for all volumes. Users can create their own custom
proles and apply them to volumes.
VMware Virtual Volumes Support
Storage Center 7.1 supports VMware Virtual Volumes (VVols) technology.
VMware VVols is a storage management and integration framework designed to deliver a more ecient operational model for
attached storage.
A key component of the VVols framework is the VASA 2.0 Provider included as part of Dell Storage Manager 2016 R2. VASA
(vSphere Storage APIs for Storage Awareness) is a software management interface between the vCenter server and storage
systems. To enable VVols operations between VMware vCenter Server and a Storage Center, the VASA Provider is registered with
VMware vCenter server.
Storage Manager includes these user interface enhancements to support VVols:
• Addition of the Register VASA Provider option to the Register Server action.
• New wizards for dening and managing storage containers. A storage container is a pool of storage that is used in a VMware
environment in support of virtual volumes. A storage container corresponds to a VVol datastore in the vCenter interface.
• A new datastore type, VVOL, can be specied when creating datastores on a VMware vSphere host.
• Updated storage views to include VVol information.
See the Dell Storage Manager Administrator’s Guide and Dell Storage Manager Release Notes for information about VVols
requirements and recommendations.
Storage Center 7.1 Feature Availability and Licenses
The core licenses and support for optional licensed features varies depending on the storage system.
Dell Storage Center 7.1 Release Notes 5
SC9000 Features and Licenses
SC9000 storage systems provide the following licensed features and optional value-added bundles.
Core Software Bundle
• Data Instant Replay (Snapshots)
• Data Reduction (Compression and Deduplication)
• Dell Storage Manager
• Dynamic Capacity
• Dynamic Controllers
• Live Migrate
• Local Data Protection
• Multi-VLAN Tagging
• Virtual Ports
• Volume QoS
• VVols
Optional Licenses
• Replay Manager
• Live Volume and Live Volume with Auto Failover
• Remote Instant Replay (Replication), including Cross-Platform Replication
• SED FIPS Secure Data
• Storage Manager Chargeback
Storage Protection Bundle
• Replay Manager
• Live Volume and Live Volume with Auto Failover
• Remote Instant Replay (Replication), including Cross-Platform Replication
Storage Optimization Bundle
• Data Progression
• Fast Track
Total Feature Bundle
• SED FIPS Secure Data
• Storage Manager Chargeback
• Storage Optimization Bundle
• Storage Protection Bundle
SC8000 Features and Licenses
SC8000 storage systems provide the following licensed features:
Core Licenses
• Data Instant Replay (Snapshots)
• Data Reduction (Compression and Deduplication)
• Dell Storage Manager
• Dynamic Capacity
6Dell Storage Center 7.1 Release Notes
• Dynamic Controllers
• Live Migrate
• Local Data Protection
• Multi-VLAN Tagging
• Volume QoS
• VVols
Optional Licenses
• Replay Manager
• Data Progression
• Fast Track
• Live Volume and Live Volume with Auto Failover
• Remote Instant Replay (Replication), including Cross-Platform Replication
• SED FIPS Secure Data
• Storage Manager Chargeback
• Virtual Ports
SC7020 Features and Licenses
SC7020 storage systems provide the following licensed features and optional value-added bundles.
Core Software Bundle
• Data Instant Replay (Snapshots)
• Data Reduction (Compression and Deduplication)
• Dell Storage Manager
• Dynamic Capacity
• Dynamic Controllers
• Live Migrate
• Local Data Protection
• Multi-VLAN Tagging
• Virtual Ports
• Volume QoS
• VVols
Optional Licenses
• Replay Manager
• Live Volume and Live Volume with Auto Failover
• Remote Instant Replay (Replication), including Cross-Platform Replication
• SED FIPS Secure Data
• Storage Manager Chargeback
Storage Protection Bundle
• Replay Manager
• Live Volume and Live Volume with Auto Failover
• Remote Instant Replay (Replication), including Cross-Platform Replication
Storage Optimization Bundle
• Data Progression
Dell Storage Center 7.1 Release Notes 7
• Fast Track
Total Feature Bundle
• SED FIPS Secure Data
• Storage Manager Chargeback
• Storage Optimization Bundle
• Storage Protection Bundle
SC4020 Features and Licenses
SC4020 storage systems provide the following licensed features:
Core Licenses
• Data Instant Replay (Snapshots)
• Data Reduction (Compression and Deduplication)
• Dell Storage Manager
• Dynamic Capacity
• Dynamic Controllers
• Live Migrate
• Local Data Protection
• Multi-VLAN Tagging
• Volume QoS
• VVols
Optional Licenses
• Replay Manager
• Data Progression
• Fast Track
• Live Volume and Live Volume with Auto Failover
• Remote Instant Replay (Replication), including Cross-Platform Replication
• SED FIPS Secure Data
• Storage Manager Chargeback
• Virtual Ports
Performance/Optimization Bundle
• Data Progression
• Fast Track
Remote Data Protection Bundle
• Remote Instant Replay (Replication)
Remote Data Protection with Live Volume Bundle
• Remote Instant Replay (Replication)
• Live Volume and Live Volume with Auto Failover
8Dell Storage Center 7.1 Release Notes
SCv2000 Series Features and Licenses
SCv2000 series storage systems provide the following licensed features:
Core Licenses
• Dell Storage Manager
• Dynamic Capacity
• Dynamic Controllers
Optional Licenses
• Flex Port
• Local Data Protection (Snapshots)
• Remote Data Protection (Asynchronous replication only)
Storage Center 7.1 Scalability
The following scalability guidelines apply to Storage Center 7.1.
Storage System Scalability Guidelines
The following scalability guidelines apply to SC9000, SC8000, SC7020, SC4020, and SCv2000 series storage systems.
NOTE: Raw storage space is expressed in decimal units (for example, 1 TB = 1012 bytes). Addressable storage space is
expressed in base 2 units (for example, 1 TB = 240 bytes). Therefore, a 1 TB drive measured in decimal units is equal to
0.909 TB base 2 units.
Storage System Supported Maximum
SC9000 (Dual-Controller) with 128 GB of
memory per controller
• 3.1 PB raw and 2.0 PB addressable storage space using the standard 2 MB
page size
• 750 TB raw and 500 TB addressable storage space using a 512 KB page size
SC8000 (Dual-Controller) with 64 GB of
memory per controller
• 3.1 PB raw and 2.0 PB addressable storage space using the standard 2 MB
page size
• 750 TB raw and 500 TB addressable storage space using a 512 KB page size
SC8000 (Dual-Controller) with 16 GB of
memory per controller
• 750 TB raw and 500 TB addressable storage space using the standard 2 MB
page size
• 400 TB raw and 300 TB addressable storage space using a 512 KB page size
SC7020 (Dual-Controller) with 128 GB of
memory per controller
• 3.1 PB raw and 2.0 PB addressable storage space using the standard 2 MB
page size
• 750 TB raw and 500 TB addressable storage space using a 512 KB page size
SC4020 with 16 GB of memory per controller • 1054 TB raw and 700 TB addressable storage space using the standard 2 MB
page size
• 500 TB raw and 400 TB addressable storage space using a 512 KB page size
SCv2000 series with 8 GB of memory per
controller
• 672 TB raw and 450 TB addressable storage space using the standard 2 MB
page size
Dell Storage Center 7.1 Release Notes 9
Storage Center Scalability Guidelines
The following scalability guidelines are the maximum recommended design guidelines for storage systems running Storage Center 7.1.
SC9000, SC8000, SC7020, and SC4020 Storage Systems
The following scalability guidelines are the maximum recommended design guidelines for SC9000, SC8000, SC7020, and SC4020
storage systems running Storage Center 7.1.
Storage Center Object Supported Maximum
Disk Folder 10 disk folders
Server • 500 servers (Total number of servers includes physical servers, virtual servers, and server
clusters.)
• 500 server folders
• 1000 server HBA initiator ports (Total number of HBA initiator ports includes all physical and
virtual ports that are visible to the SAN.)
Volume • 500 TB maximum volume size (or the maximum addressable storage space, whichever is less)
• 2000 volumes
• 500 volume folders
Deduplication 1 PB data ingestion limit (SC4020 – 500 TB data ingestion limit)
Live Volume 100 Live Volumes
Thin Import 10 volumes (maximum simultaneous imports)
QoS Proles • 100 Volume QoS Proles
• 100 Group QoS Proles
• 100 Volumes per Group QoS Prole
Data Instant Replay
(Snapshots)
• Snapshots:
–SC9000 – 16,000 snapshots
–SC8000 – 16,000 snapshots
–SC7020 – 16,000 snapshots
–SC4020 – 4000 snapshots
• 1000 snapshot proles
• 100 snapshot history proles
• 200 consistency groups
• 100 volumes per consistency group (SC4020 – 40 volumes per consistency group)
Replications • Source replications:
–SC9000 – 500 source replications
–SC8000 – 500 source replications
–SC7020 – 1000 source replications
–SC4020 – 250 source replications
• 2000 target replications (SC4020 – 1000 replications for FC and 230 replications for iSCSI)
SCv2000 Series Storage System
The following scalability guidelines are the maximum recommended design guidelines for SCv2000 series storage systems running
Storage Center 7.1.
10 Dell Storage Center 7.1 Release Notes
Storage Center Object Supported Maximum
Disk Folder 4 disk folders
Server • 100 servers (Total number of servers includes physical servers, virtual servers, and server
clusters.)
• 100 server folders
• 200 server HBA initiator ports (Total number of HBA initiator ports includes all physical and
virtual ports that are visible to the SAN.)
Volume • 500 TB maximum volume size (or the maximum addressable storage space, whichever is less)
• 1000 volumes
• 500 volume folders
Thin Import 10 volumes (maximum simultaneous imports)
QoS Proles • 100 Volume QoS Proles
• 100 Group QoS Proles
• 100 Volumes per Group QoS Prole
Data Instant Replay
(Snapshots)
NOTE: Data Instant
Replay is a licensed
feature.
• 2000 snapshots
• 1000 snapshot proles
• 100 snapshot history proles
• 100 consistency groups
• 25 volumes per consistency group
Replications • 124 source replications
• 500 target replications
Fixed Issues
The following sections summarize the issues xed in Storage Center 7.1.
Fixed Issues Related to Data Reduction
The following issues are xed in Storage Center 7.1:
Table 3. Fixed Data Reduction Issues in Storage Center 7.1.20
Issue Description
SCOS-40135 A storage system with Deduplication enabled might display a false positive metadata validation
failure message in the Storage Center console and generate validation failure alerts in the
Deduplication map table.
SCOS-39128 A storage system with Deduplication enabled might experience increased latency while expiring
deduplicated data or during Data Progression.
SCOS-34642 A controller might reset if too many storage system resources are consumed during Deduplication
and snapshot expiration of deduplicated pages.
SCOS-27942 A storage system with Deduplication enabled might fail to remove page pool devices during a
RAID rebalance because of performance issues.
SCOS-24830 A controller might reset during lost space recovery in the Deduplication page manager.
SCOS-24167 A storage system with Deduplication enabled volumes might experience performance issues
during the Deduplication page manager clean-up process.
Dell Storage Center 7.1 Release Notes 11
Issue Description
SCOS-22379 The Compression and Deduplication page manager defragmentation process might cause high
CPU utilization and impact system performance.
SCOS-21671 Rehydration of deduplicated or compressed data does not place the data in the tier specied by
the volume storage prole.
SCOS-19002 Enabling deduplication on a storage system while one controller is in a failed state might result in
volumes that appear to be deduplicated, when in fact they are not deduplicated.
Table 4. Fixed Data Reduction Issues in Storage Center 7.1.12
Issue Description
SCOS-32152 A storage system with Deduplication or Compression enabled that is running low on system
memory might experience I/O errors, performance degradation, and premature Live Volume
failovers.
SCOS-31054 Enabling Deduplication on a volume that is part of a replication might result in hundreds of
Ingestion failure due to SecondaryStorage infrastructure is not
ready log messages.
SCOS-21275 After updating from Storage Center 7.1.1, a storage system might fail to enable Deduplication on
some volumes.
Table 5. Fixed Data Reduction Issues in Storage Center 7.1.3
Issue Description
SCOS-20960 The IOPS of a storage system might decrease, and I/O latency might increase signicantly
because of high CPU usage during the Data Progression defragmentation process.
SCOS-20449 A controller reset might occur because of out of range memory access during the Data
Progression defragmentation process.
SCOS-20240 Data Progression might fail to move pages to tier 3 for volumes that are larger than 32 TB. If a
specic history has multiple view volumes, Data Progression might fail to move pages for volumes
smaller than 32 TB.
SCOS-20075 A storage system with Flash Optimized storage types and Deduplication enabled might suer an
outage during On Demand Data Progression if the system is low on space in tier 1 RAID 10.
SCOS-19570 A storage system running Storage Center 7.1 with compression enabled and over 25 TB of data
ingested into the Deduplication process might suer from I/O delays because of high CPU usage
at the end of Data Progression.
Table 6. Fixed Data Reduction Issue in Storage Center 7.1.2
Issue Description
SCOS-19580 The front-end I/O performance of a storage system might degrade during Data Progression after
a few terabytes of data are ingested into the Deduplication process.
Table 7. Fixed Data Reduction Issues in Storage Center 7.1.1
Issue Description
SCOS-14931 On Demand Data Progression may not complete successfully when Deduplication is enabled on a
volume.
SCOS-13649 Volumes on separate controllers might show the same Deduplication reduction rates when the
Deduplication reduction rates are dierent.
12 Dell Storage Center 7.1 Release Notes
Issue Description
SCOS-13159 Deduplication and Compression might take volumes oine when responses to storage type status
are incorrect.
Fixed Issues Related to Hardware
The following issues are xed in Storage Center 7.1:
Table 8. Fixed Hardware Issues in Storage Center 7.1.20
Issue Description
SCOS-41017 An iSCSI I/O card might fail to exit hibernate mode after a reset.
SCOS-40447 On SCv2000 series and SC4020 storage systems, the Eth1 IPC path down might go down due to
system resource issues.
SCOS-40207 On storage systems running Storage Center 7.1.3 or 7.1.4, an iSCSI I/O card might reset because
of an IORP timeout that is 10 seconds greater than the IORP requested timeout.
SCOS-35618 On SCv2000 series and SC4020 storage systems, the battery backup unit (BBU) might fail to
recover from a BMC reset.
Table 9. Fixed Hardware Issues in Storage Center 7.1.12
Issue Description
SCOS-22733 A Cisco UCS blade server running ESXi might fail to boot from SAN after updating the Storage
Center software on a storage system.
SCOS-22018 Unknown drive vendor I/O errors that are not handled correctly during a Storage Center error
condition might cause an increase in system latency.
SCOS-19991 An SC9000 controller might reset because of issues with the cache card during controller failover.
SCOS-19920 The drive fault LED might remain lit if the ready for removal command is sent after the drive is
removed.
SCOS-15234 A storage controller in an SC4020 storage system might reset if the driver for internal
communication nds a fatal error reported in the register.
SCOS-13232 A Fibre Channel port or controller might reset due to RISC pause errors on a QLogic 8 Gb Fibre
Channel HBA.
Table 10. Fixed Hardware Issues in Storage Center 7.1.1
Issue Description
SCOS-16637 A 10 Gb iSCSI I/O card is unable to receive data from an Oracle Linux server if the write
command is 8,126,464 bytes or larger.
SCOS-15864 A dual controller reset might occur if a single volume is mapped to more than 10 local ports per
controller.
SCOS-15697 A dual controller reset might occur due to a data overow issue with a 10 Gb iSCSI I/O card.
SCOS-15264 A dual controller reset might occur following the deletion of iSCSI remote port congurations.
SCOS-15263 The embedded iSCSI ports might reset because of connection timeouts to remote storage
systems.
SCOS-15002 A controller reset might occur because of high memory usage caused by login requests that take
a long to time process during heavy I/O.
Dell Storage Center 7.1 Release Notes 13
Issue Description
SCOS-14901 An SCv2000 series controller reset might occur due to an issue with the system prole size.
SCOS-14257 A controller reset might occur because of an issue with deduplication.
SCOS-13499 An SC400 expansion enclosure might report incorrect high temperature warnings.
SCOS-13353 SC8000 controllers with CHA3 cache cards might reset due to a reference to a no longer
supported Storage Center subsystem.
SCOS-12881 An SC400 or SC420 expansion enclosure might incorrectly report high temperature warnings.
SCOS-10740 An SCv2000 series storage system might unexpectedly shut down because of a high operating
temperature issue.
SCOS-10012 VMotioning VMs to an SC7020 might cause the datastore to go oine.
SCOS-10010 Auto discovery of an SC7020 might fail in some installation environments.
SCOS-9033 An SCv2000 series or SC4020 storage system running Storage Center 6.5.2 might incorrectly
create swap alerts.
SCOS-7943 A controller might reset if the iSCSI initiator logs out from the target, but the initiator fails to
terminate the connection.
SCOS-6420 An SCv2000 series controller reset might occur due to an incorrect front-end SAS I/O card
critical temperature alert.
SCOS-6338 Storage Center UPS monitoring does not support newer UPS network cards.
SCOS-3400 The embedded iSCSI ports on an SCv2080 series storage system might reset on congurations
where there is congestion at the initiator, causing ow control back to the storage system.
SCOS-2570 On rare occasions, a RAID device might not be degraded properly when a second write failure is
reported for the same device.
SCOS-2548 An SC9000 controller might reset due to an issue during controller failover.
SCOS-2534 After updating to Storage Center 6.6.5 a controller with iSCSI I/O cards might reset during a
front-end rebalance, resulting in an outage.
SCOS-2390 An iSCSI I/O card might send out an Address Resolution Protocol (ARP) request for IP on another
network if it cannot nd a gateway.
SCOS-2386 A controller might reset if an iSCSI host sends a non-512 byte aligned rst burst size when
Immediate Data is enabled.
SCOS-2098 Performing a non-service aecting upgrade from a CHA3 cache card to a 4 GB Write cache card
might cause the upgrade to fail due to card installation errors.
SCOS-1476 A controller might reset and fail-over might be unsuccessful due to an iSCSI I/O cache card
memory leak with iSCSI attached Oracle and Linux servers.
SCOS-1408 If TCP RX fragmentation is enabled on iSCSI I/O cards, the card might enter and exit hibernation
mode, causing replications to fail.
SCOS-1380 On rare occasions, a single-disk predictive failure might cause high latency because of long disk
recovery during I/O.
SCOS-684 A short duration AC line brownout on an SCv2000 series or SC4020 storage system might cause
unnecessary controller failover.
SCOS-208 Disks might get a BadRegionsPresent health code during a rebuild, even when they are down, due
to the multiple RIPExpired errors.
14 Dell Storage Center 7.1 Release Notes
Issue Description
SCOS-206 Disks might get excessive health codes because of RIPExpired issues codes on devices that are
down.
Fixed Issues Related to Replication and Live Volume
The following issues are xed in Storage Center 7.1:
Table 11. Fixed Replication and Live Volume Issues in Storage Center 7.1.20
Issue Description
SCOS-36665 A controller reset might occur while attempting to fail over a Windows cluster on an RDM volume
mapped to non-unied ESXi hosts when using Live Volume High Consistency.
SCOS-35656 Live Volume proxy disk space might be counted towards the total available system disk space.
SCOS-32134 Access to a volume might be lost if out of memory errors occur before the replication enters the
suspending state.
SCOS-7793 A storage system might fail to delete a replication when the QoS node is blocked and there is
outstanding I/O.
Table 12. Fixed Replication and Live Volume Issues in Storage Center 7.1.12
Issue Description
SCOS-22156 The VVols feature in ESXi 6.0 Update 2 fails to work properly with Storage Center 7.1.2.
SCOS-21399 A controller might reset during cross-platform replication initialization with a PS Series array.
SCOS-19269 In a two controller storage system, the active controller might reset during failover after
performing a Storage Center update on the peer controller.
SCOS-16677 When creating a Live Volume, choosing a destination volume that is mapped to a server might
cause the Live Volume to go oine. This might cause other volumes that use Deduplication or
Compression on the destination Storage Center to go oine.
SCOS-16377 In rare instances, a storage system with Live Volumes might reset when multiple changes are
made to the Fibre Channel switch congurations within a short time period.
Table 13. Fixed Replication and Live Volume Issues in Storage Center 7.1.1
Issue Description
SCOS-14576 Unable to perform Storage Center to PS Series group replication if the Storage Center volume
name contains Chinese, German, French, Japanese, or Spanish characters.
SCOS-14065 Thin Import setup is unable to activate the destination volume on a Storage Center when iSCSI is
not congured on the storage system.
SCOS-13152 A cross-platform replication snapshot from a PS Series array to a Storage Center might display
the wrong volume icon.
SCOS-1928 In ESXi 5.5 or later hosts, the status of a secondary Live Volume remains down after bringing the
primary Storage Center back online.
SCOS-706 Converting an existing ESXi datastore volume to Live Volume might cause the volume to
disconnect from the ESXi hosts.
Dell Storage Center 7.1 Release Notes 15
Fixed Issues Related to Alerts and Reporting
The following issues are xed in Storage Center 7.1:
Table 14. Fixed Alert and Reporting Issues in Storage Center 7.1.20
Issue Description
SCOS-29664 The storage system might report hundreds of Log Corrupt Page Address error messages during a
RAID restripe.
Table 15. Fixed Alert and Reporting Issues in Storage Center 7.1.12
Issue Description
SCOS-21331 The Storage Center email process might stop and fail to restart. This issue causes the Storage
Center alert email queue to ll up, which might cause a controller to reset.
Table 16. Fixed Alert and Reporting Issues in Storage Center 7.1.1
Issue Description
SCOS-12602 On rare occasions, enabling SNMP causes the SNMP agent to stop unexpectedly and it cannot
be restarted.
SCOS-12287 Incorrect SSD endurance tracker alerts might appear if duplicate endurance tracker entries are
created.
SCOS-2906 For SCv2000 series storage systems, the Storage Center does not report if the SAS backend is
disconnected.
SCOS-2492 In Storage Center 6.6, enabling the AUTH LOGIN option in the SMTP Server settings might cause
the email manager to fail.
SCOS-1852 In Storage Center 6.5.10 or later, snapshot messages in system logs might contain an incorrect
Position 3072 is past the expected bound error message.
SCOS-1546 The Storage Center admin user does not receive an email when a disk folder is close to being full.
SCOS-1136 When compression is enabled, volume storage usage statistics are not reported correctly.
SCOS-600 In Storage Center 6.5 and 6.6, the SMTP service might not function properly due to ARP reply
packet rejection.
Fixed Issues Related to Security
The following issues are xed in Storage Center 7.1:
Table 17. Fixed Security Issues in Storage Center 7.1.20
Issue Description
SCOS-40490 Updated the OpenSSL version on the Storage Center to OpenSSL 1.0.1u to address the following
security vulnerabilities:
• CVE-2016-2177 – www.cvedetails.com/cve/CVE-2016-2177/
• CVE-2016-2178 – www.cvedetails.com/cve/CVE-2016-2178/
• CVE-2016-2179 – www.cvedetails.com/cve/CVE-2016-2179/
• CVE-2016-2180 – www.cvedetails.com/cve/CVE-2016-2180/
• CVE-2016-2181 – www.cvedetails.com/cve/CVE-2016-2181/
• CVE-2016-2182 – www.cvedetails.com/cve/CVE-2016-2182/
• CVE-2016-2183 – www.cvedetails.com/cve/CVE-2016-2183/
• CVE-2016-6302 – www.cvedetails.com/cve/CVE-2016-6302/
16 Dell Storage Center 7.1 Release Notes
Issue Description
• CVE-2016-6303 – www.cvedetails.com/cve/CVE-2016-6303/
SCOS-40083 Clickjacking vulnerability found on web server ports in Storage Center.
Table 18. Fixed Security Issues
Issue Description
SCOS-10577 Security enhancement regarding the following vulnerabilities:
• CVE-2012-4930 – www.cvedetails.com/cve/CVE-2012-4930/
• CVE-2012-4929 – www.cvedetails.com/cve/CVE-2012-4929/
SCOS-7936 Security enhancement regarding Apache HTTPD and OpenSSL vulnerabilities.
SCOS-3356 Security enhancement regarding the following vulnerability:
CVE-2015-1283 – www.cvedetails.com/cve/CVE-2015-1283/
SCOS-3254 A controller reset may occur due to a TCP connection LAST_ACK socket state error.
Fixed Issues Related to Storage Management
The following storage management issues are xed in Storage Center 7.1:
Table 19. Fixed Storage Management Issues in Storage Center 7.1.20
Issue Description
SCOS-40999 Metadata on inconsistent RAID mirrors/stripes might cause Data Progression failures and lead to
inecient system space usage and performance degradation.
SCOS-40725 A controller might reset when updating statistics for page moves between classes if the source
page is on a device marked for deletion.
SCOS-40529 A controller reset might occur if there are a large number of metadata space allocation requests at
the same time for a volume.
SCOS-40491 SNMP management queries might fail to function properly on storage systems running Storage
Center 7.1.
SCOS-37561 A controller might reset unexpectedly under certain rare timing conditions.
SCOS-40094 Storage Center might delay Data Progression/restripe activity to unacceptable levels if there are
other higher priority background processes.
SCOS-37719 A controller might reset after updating to Storage Center 7.1.3, 7.1.4, or 7.1.5. because of an issue
with memory fragmentation.
SCOS-36475 A storage system might encounter high CPU usage during page validation stage of Data
Progression. This issue is limited to pages consumed from the storage type.
SCOS-36534 Storage Center is unable to create more than a single spare drive on an SC280 enclosure if an
SC220 and SC280 were connected to the storage system during the initial system conguration.
SCOS-36336 A controller might reset when the lock associated with a particular message type cannot be
found. Due to variable timing conditions within the platform, messages can arrive out of order.
SCOS-36319 On storage systems that only have spinning disks and have large volumes with a large number of
new page writes, existing snapshots take a very long to expire.
SCOS-35648 Removing a port from a fault domain while a controller is down might result in storage system
conguration issues.
Dell Storage Center 7.1 Release Notes 17
Issue Description
SCOS-32925 On rare occasions, a storage system might experience performance degradations due to a
mismatch in a virtualization threshold value.
SCOS-31707 Importing multiple volumes from an external device using Thin Import causes the volumes to
appear as external devices with the following error:
illegal character found for Attribute: Name
[Illegal Chracters: [<, >, &] ]]
Table 20. Fixed Storage Management Issues in Storage Center 7.1.12
Issue Description
SCOS-40856 A controller might reset if the iSCSI initiator is redirected to an IPv4 address of 0.0.0.0.
SCOS-40529 A storage controller might reset because of resource depletion issues on large control space
allocations.
SCOS-36717 On an SC4020 storage system, Data Progression might fail because of memory allocation issues.
SCOS-34081 Data Progression might not complete because of a missing Compression freelist entry.
SCOS-32882 A storage controller in an SC4020 storage system might reset because of memory allocation
issues for unaligned RAID 10 I/Os.
SCOS-26905 A storage system that performs Deduplication might send SupportAssist information to Dell
Technical Support that cannot be properly processed.
SCOS-26753 A replacement drive might fail to initialize because of depleted Storage Center software
resources.
SCOS-24830 A storage controller might reset while Data Progression performs a clean-up action on
compressed data.
SCOS-21900 Updating to Storage Center 6.7.5 might cause an increase in BadRegionsPresent health code
errors for drives.
SCOS-20142 A controller might reset when the settings of a new Fault Domain are modied.
SCOS-19766 A storage system might enter emergency mode if it is unable to create page pool devices due to
CA out of space errors.
SCOS-18185 A controller might reset when removing an enclosure or reinserting a previously archived or
deleted disk into the enclosure from which it was removed.
SCOS-16637 A storage system with Chelsio 10 Gb iSCSI HBAs might be unable to handle large I/O sizes.
Table 21. Fixed Storage Management Issues in Storage Center 7.1.4
Issue Description
SCOS-22591 The defragmentation attributes have been modied to reduce CPU usage that could impact
server I/O latency.
Table 22. Fixed Storage Management Issues in Storage Center 7.1.3
Issue Description
SCOS-21562 In Storage Center 7.1, manual and scheduled restripes are restricted to 12 hours per day.
SCOS-18899 A storage system might incorrectly report snapshot bad pages when the system is low on
memory.
18 Dell Storage Center 7.1 Release Notes
Issue Description
SCOS-20668 An SCv2000 series or SC4020 storage system might trigger alerts or reset because of high
memory utilization caused by memory fragmentation.
SCOS-18540 A controller revert might take several minutes to complete while deactivating the history of a large
volume (several TBs) if the storage system has space management snapshots.
Table 23. Fixed Storage Management Issue in Storage Center 7.1.2
Issue Description
SCOS-18932 Using Ooaded Data Transfer (ODX) in Hyper-V might result in degraded MPIO paths.
Table 24. Fixed Storage Management Issues in Storage Center 7.1.1
Issue Description
SCOS-17884 When deduplication is enabled, Data Progression may not complete successfully due to memory
allocation recovery issues.
SCOS-16576 On rare occasions during a RAID rebalance, a short timing window may occur where inaccurate
pagepool information is read from the system resulting in volumes becoming inaccessible for a
brief period.
SCOS-15831 A controller reset might occur while modifying or deleting an iSCSI fault domain.
SCOS-15651 Data Progression failures might occur if Data Progression is running on a volume with snapshots
that expire at the same time.
SCOS-15239 After updating to Storage Center 7.0, Data Progression times might increase when compression or
deduplication is enabled.
SCOS-14111 Secondary storage deactivation process is not ushing prefetch pages.
SCOS-13724 A single controller storage system shows servers as partially connected when servers are
connected using Fibre Channel.
SCOS-10256 Creation of the rst volume on a storage system with 7K drives might result in a false PagePool
7K Down alert condition.
SCOS-9946 Data optimization statistics might fail to update after a snapshot coalescence.
SCOS-8853 Data Progression might fail to start after updating a storage system to Storage Center 6.7.
SCOS-8742 Performing a thin import to a destination volume with compression enabled causes all volumes on
the storage system with compression enabled to transition to a down state.
SCOS-8543 When the compression feature is enabled for a volume, the volume might become inaccessible.
SCOS-8248 In a Windows 2012 R2 virtual machine running in ESXi 5.5 or Hyper-V on Windows Server 2012,
an iSCSI Ooaded Data Transfer (ODX) attempt is causing volume access to hang when the
volumes are on dierent storage systems.
SCOS-7932 Adding a storage system to Dell Storage Manager might fail if the storage system is licensed for
SEDs, but it does not have any SED disks.
SCOS-7533 On a storage system with compression enabled, performance degradation might occur during the
rst few minutes of Data Progression because of table validation.
SCOS-7269 In Storage Center 6.7.5, setting the VLAN Priority to a value above 0 on a fault domain with an
iSCSI I/O card that is doing VLAN tagging might prevent iSCSI initiators from logging in.
SCOS-6821 After performing an import from a PS Series storage array, Storage Center continues to attempt
to log in to the PS Series storage array, which causes multiple failure logs.
Dell Storage Center 7.1 Release Notes 19
Issue Description
SCOS-3276 Web services under a sustained heavy workload might fail to restart resulting in a loss of access
to the Storage Center management interface.
SCOS-2410 On rare occasions, snapshots might fail to expire in Storage Center 6.5.20.
SCOS-1920 Directly connecting to an SCv2000 series storage system with the Dell Storage Client and
modifying Storage Center user preferences might result in an error.
SCOS-1200 Command timeouts and errors might occur after installing FIPS WI-SSDs on a storage system
running Storage Center 6.6.5.
SCOS-928 Storage systems might report increased memory usage due to improper release of sockets.
SCOS-104 A volume restripe operation with large amounts of compressed data might take an extended
amount of time to restripe due to Data Progression errors.
SCOS-100 On rare occasions, Data Progression and subsequent rebalancing might fail due to snapshot full
page memory limitations.
Fixed Issues Related to Updating, SupportAssist, and Licensing
The following issues are xed in Storage Center 7.1:
Table 25. Fixed Updating, SupportAssist, and Licensing Issues in Storage Center 7.1.20
Issue Description
SCOS-40141 After updating a storage system to Storage Center 7.1.4, controllers might reset while processing
the Link Conguration initialization step.
SCOS-35674 An SC4020 storage system might suer an outage after updating from Storage Center 6.7 to 7.1 if
the storage system exceeds the maximum number of snapshots.
Table 26. Fixed Updating, SupportAssist, and Licensing Issues in Storage Center 7.1.12
Issue Description
SCOS-24853 In a dual-controller storage system, a license le conict might cause the controllers to reboot.
SCOS-21811 A controller might fail to boot if the Disk Folder is deleted after updating to Storage Center 7.1.
SCOS-20769 If there is an existing invalid trap on the Storage Center, a storage controller might fail to boot
after updating to Storage Center 7.1.2 because of the changes made to support SNMPv3.
Table 27. Fixed Updating, SupportAssist, and Licensing Issues in Storage Center 7.1.3
Issue Description
SCOS-20301 The disk initialization feature is not fully enabled on storage systems that are updated to Storage
Center 7.1.
Table 28. Fixed Updating, SupportAssist, and Licensing Issues in Storage Center 7.1.2
Issue Description
SCOS-18287 Firmware updates might fail when updating an SCv2000 series storage system or an SC4020
storage system from Storage Center 6.6 to Storage Center 7.1.
20 Dell Storage Center 7.1 Release Notes
Table 29. Fixed Updating, SupportAssist, and Licensing Issues in Storage Center 7.1.1
Issue Description
SCOS-3438 After updating an SCv2000 series or SC4020 storage system to Storage Center 6.6, performing
an update to Storage Center 6.7 might cause performance issues due to improperly handled
update le links.
SCOS-3370 Sending diagnostic data using SupportAssist might fail after updating from Storage Center 6.4 or
6.5 to Storage Center 6.6 and later due to previous, pending requests that are unable to complete.
SCOS-2938 Applying the incorrect version of a license le to an SC4020 storage system might cause issues
with the Flex Port feature and management of legacy disks.
SCOS-1868 For SC4020 storage systems, an enclosure rmware update might fail due to missing
electronically stored information (ESI) paths during installation.
SCOS-694 On rare occasions, when performing a non-service aecting update, a controller may reset due to
duplicate and/or overlapping data writes.
Fixed Issues Related to User Management
The following issues are xed in Storage Center 7.1:
Table 30. Fixed User Management Issues
Issue Description
SCOS-14309 Storage Center does not restrict directory service communication to manually dened LDAP
servers. This issue might cause delays when joining Storage Center to a directory environment or
failures when adding directory users and groups to Storage Center for authentication.
SCOS-13835 The password of the Baseboard Management Controller (BMC) resets to the default value after a
controller reset.
SCOS-13236 An error might occur in the Dell Storage Manager Client if the user preferences snapshot prole
list is invalid.
Open Issues
The following issues are present in Storage Center 7.1.
Open Issues Related to Data Reduction
The following open issues are related to Data Reduction:
Table 31. Open Data Reduction Issues
Issue Description
SCOS-13237 The Storage Type Data Reduction statistics might be incorrect if the amount of data eligible for
Data Reduction contains fewer than 256 pages.
Workaround: None
Dell Storage Center 7.1 Release Notes 21
Open Issues Related to Hardware
The following open issues are related to hardware:
Table 32. Open Hardware Issues
Issue Description
SCOS-18759 The QLe246x Fibre Channel I/O Card takes longer to rebalance in Storage Center 7.1 than it did in
previous versions of Storage Center.
Workaround: The QLe246x I/O card is not supported in Storage Center 7.1 and must be replaced
with a supported Fibre Channel I/O card.
SCOS-18490 When connected directly to the Storage Center using the Dell Storage Manager Client, an error
occurs in the hardware change wizard while performing a hardware migration from an SC040
running Storage Center 6.7 to an SC8000 running Storage Center 7.1.
Workaround: Connect to the Storage Manager Data Collector using the Dell Storage Manager
Client and then run the hardware change wizard on the Storage Center.
SCOS-10427 On rare occasions, an SCv2000 series or SC4020 storage system may not initialize following a
reset or power cycle.
Workaround: Reboot the storage system by performing a power cycle on the controllers. After
the controllers are power cycled, the storage system boots up successfully.
SCOS-6516 On rare occasions, the internal boot device on an SC9000 controller may become unusable
following an unexpected power event and the controller will not boot.
Workaround: Contact Dell Technical Support.
Open Issues Related to Replications and Live Volumes
The following open issues are related to replications and Live Volumes:
Table 33. Open Replication and Live Volume Issues
Issue Description
SCOS-18102 The status of a cross-platform replication partner changes to down when the number of
snapshots exceed 1025.
Workaround: The maximum number of supported snapshots for a cross-platform replication is
512. To resolve this issue, manually remove the snapshots until there are less than 512 snapshots
and change the expiration dates of snapshots for the replication volume to a manageable
expiration time.
SCOS-17981 Server mappings may not be completely removed when a server is removed from an OS cluster
using Dell Storage Manager prior to the server being removed from the OS cluster.
Workaround: Remove the server from the cluster through the OS rst. After the server is
rebooted, remove the server object using Dell Storage Manager.
SCOS-12067 When importing a volume, Storage Manager does not allow you to select 0 as the LUN number.
Workaround: None
22 Dell Storage Center 7.1 Release Notes
Open Issues Related to Storage Management
The following open issues are related to Storage Management:
Table 34. Open Storage Management Issues
Issue Description
SCOS-14951 After deleting volumes and snapshots, Storage Center does not immediately report the deleted
volume space as free space for a disk folder.
Workaround: Contact Dell Technical Support.
Open Issues Related to Updating, SupportAssist, and Licensing
The following open issues are related to updating , SupportAssist, and licensing:
Table 35. Open Updating, SupportAssist, and Licensing Issues
Issue Description
SCOS-18488 The Storage Center System Manager user interface is not disabled after updating a dual-
controller storage system from Storage Center 6.6.5 to Storage Center 7.1.1.
Workaround: Reboot the storage system.
Open Issues Related to User Management
The following open issues are related to Storage Center user management:
Table 36. Open User Management Issues
Issue Description
SCOS-11192 Storage Center cannot authenticate directory service users that are congured to use an
alternate DNS sux.
Workaround: None
Open Issues Related to Vendors
The following open issues are related to vendors:
Table 37. Open Vendor Issues
Issue Description
SCOS-18203 In certain degraded conditions, data miscompares might occur when running software FCoE on
an Intel X520 adapter in an ESXi 5.5 or 6.0 host.
Workaround: Issue has been escalated with VMware. See the Dell Storage Compatibility Matrix
for updates.
SCOS-18123 Fibre Channel volumes that are mapped to a Hyper-V virtual machine using NPIV are not
discovered by the virtual machine when the server has a QLogic HBA with out-of-date drivers.
Workaround: Update the HBA to the latest version of the QLogic driver listed in the Dell Storage
Compatibility Matrix.
SCOS-17996 An ESXi 5.5 or 6.0 host with an Emulex FC/FCoE HBA running driver version 11.0.x.x might crash
during a controller failover.
Workaround: Update the Emulex FC/FCoE HBA to driver version 11.1.145.18, which is available on
the VMware website.
Dell Storage Center 7.1 Release Notes 23
Issue Description
SCOS-16820 Software FCoE timeouts might occur when using QLogic CNAs in NIC mode.
Workaround: See the Dell Storage Compatibility Matrix for the list of supported rmware and
drivers.
SCOS-10166 Emulex FC and FCoE driver version 10.7.170.0 might cause an ESXi 5.5 or 6.0 host to fail during
controller failovers.
Workaround: Use the latest recommended driver version for the Emulex adapters. See the Dell
Storage Compatibility Matrix.
SCOS-10155 Data Center Bridging bandwidth utilization of trac classes might cause I/O to stop on iSCSI
initiators when using an Intel X520 Dual Port 10 Gb server adapter.
Workaround: None.
CQ00358236 ESXi 5.x hosts with QxE82xx iSCSI adapters using QLA4xxx driver version 634.5.18 (ESXi 5.1) or
6.34.55.20 (ESXi 5.5) might fail to log in to the Storage Center after a controller reset or failover.
Workaround: Use the latest recommended driver version for the QLogic adapters. See the Dell
Storage Compatibility Matrix.
CQ00252780 On a storage system with iSCSI front-end ports, if a controller or port is in a failover process
when a Windows boot from SAN is requested, the boot might fail.
Workaround: Subsequent boot from SAN requests succeed when the controller or port is up.
Storage Center Update Information
The following information must be considered before updating to Storage Center 7.1.
A storage system must be running Storage Center 6.6.4 or later to perform a SupportAssist update to Storage Center 7.1. For more
information, see the Dell Storage Center Software Update Guide.
NOTE: When performing an update of both Storage Center and Dell Storage Manager, update Dell Storage Manager
before updating Storage Center.
Support Resources
The following section provides resources for nding more information on using a Storage Center storage system.
Related Documentation
The following documents are available for a storage system running Storage Center 7.1.
•Dell Storage Center Software Update Guide
Describes how to update Storage Center software from an earlier version to the current version.
•Dell Storage Center Update Utility Administrator’s Guide
Describes how to use the Storage Center Update Utility to install Storage Center software updates. Updating Storage Center
software using the Storage Center Update Utility is intended for use only by sites that cannot update Storage Center using
standard methods.
•Dell Storage Manager Installation Guide
Provides installation and setup instructions.
•Dell Storage Manager Administrator’s Guide
Provides instructions for using the Data Collector Manager and the Dell Storage Manager Client.
•Dell Storage Manager Online Help
24 Dell Storage Center 7.1 Release Notes
Provides context-sensitive help for the Dell Storage Manager Client, Data Collector Manager, and Storage Manager Server
Agent.
•Dell Storage Manager Release Notes
Provides information about Dell Storage Manager releases, including new features, enhancements, xed issues, and open issues.
•Dell Storage REST API Release Notes
Provides information about the Dell Storage REST API, which allows you to manage the Storage Manager Data Collector and
Storage Centers.
Finding Documentation
The following locations contain documentation for a storage system running Storage Center 7.1.
•Dell Support
Provides documentation for Dell storage products. Go to www.dell.com/support.
•Dell TechCenter
Provides technical white papers, best practice guides, and frequently asked questions about Dell storage products. Go to http://
en.community.dell.com/techcenter/storage/.
Contacting Dell
Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some
services might not be available in your area.
To contact Dell for sales, technical support, or customer service issues, go to www.dell.com/support.
• For customized support, type your system service tag on the support page and click Submit.
• For general support, browse the product list on the support page and select your product.
Copyright © 2017 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its
subsidiaries. Other trademarks may be trademarks of their respective owners.
Dell Storage Center 7.1 Release Notes 25
