VSphere Replication FAQ V Sphere
User Manual: vSphere-Replication-FAQ of /wp-content/uploads/2017/09
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- What is VMware vSphere Replication?
- What are use cases for VMware vSphere Replication?
- What are the minimum requirements for enabling VMware vSphere Replication?
- What is the terminology commonly used with VMware vSphere Replication?
- If I configure VMware vSphere Replication with a recovery point objective (RPO) of 60 minutes, does that mean replication will occur at exactly 60-minute intervals? Does that also mean the recovery point is always going to be exactly 60 minutes old?
- What are the roles of the various VMware vSphere Replication system components?
- They provide the following functions:
- Track changes to the virtual machines and send these changes to a remote vSphere Replication Management Server or vSphere Replication Server virtual appliance
- Schedule replications
- Coordinate replication of virtual machine configuration and group consistency for virtual machine disks
- What are the replication and synchronization types in VMware vSphere Replication?
- What databases are required for VMware vSphere Replication?
- How does VMware vSphere Replication interact with other VMware products?
- If a VMware vSphere host that is performing replication goes offline and VMware vSphere High Availability restarts the protected virtual machine on another vSphere host, will replication be resumed?
- If Microsoft Volume Shadow Copy Service (VSS) quiescing is enabled when configuring a virtual machine for replication, will this cause issues with backup solutions that also use VSS?
- What replication engine is VMware vSphere Replication using? Is it Changed Block Tracking (CBT)? Are virtual machine snapshots used?
- Can VMware vSphere Replication tasks be scheduled? How does vSphere Replication determine replication schedules?
- Where is VMware vSphere Replication information for the source virtual machine stored?
- How does vSphere Replication keep track of changes to a virtual machine? Are the changes buffered?
- Does VMware vSphere Replication maintain a virtual machines snapshot hierarchy?
- What is the hbrdisk.RDID file?
- Can powered-off virtual machines be replicated using VMware vSphere Replication?
- Because replication occurs only when a virtual machine is powered on, is there data lost to the replication process as the virtual machine is shut down?
- What is the difference between pausing replication and stopping replication?
- Is it possible to change the recovery point objective (RPO) of a virtual machine that is currently being replicated?
- Is there a way to test failover for a virtual machine protected by VMware vSphere Replication without VMware vCenter Site Recovery Manager or VMware vCloud Hybrid Service Disaster Recovery?
- Is there an API or SDK for VMware vSphere Replication?
- How are upgrades handled in an environment where VMware vSphere Replication is deployed?
- What happens to a virtual machines replication state if the host on which the virtual machine was running crashes during replication?
- What happens to a virtual machines replication state if the VMware vSphere Replication virtual appliance receiving replication for that virtual machine crashes during replication?
- What happens if the host receiving NFC traffic from a VMware vSphere Replication virtual appliance goes offline?
- What happens if the VMware vSphere Replication Management Server virtual appliance goes offline?
- What are the TCP/IP ports used by VMware vSphere Replication?
- Can a particular VMware vSphere management interface be configured for replication? Is it possible to configure an additional network adapter in a VMware vSphere Replication virtual appliance?
- How does VMware vSphere Replication manage bandwidth consumption for initial and ongoing replication?
- How do I estimate the replication traffic bandwidth requirements?
- What happens if there is a network disconnect between the source location and the target location? When connectivity has been restored, will replication continue from where it left off?
- Is there a minimum VMware vSphere VMFS version required for VMware vSphere Replication?
- If using VMware vSphere VMFS to host VMware vSphere Replication protected virtual machines, do the source and destination need the same block size?
- Are there any special virtual machine disk (VMDK) requirements to support VMware vSphere Replication?
- Is it possible to replicate a virtual disk connected to a virtual SCSI controller that is configured for SCSI bus sharing?
- How do I prepare the target location for using VMware vSphere Replication seeded data?
- How do I create virtual disk seeds for replication targets?
- How much disk space should be allocated for replication at the target location?
- What is the worst-case target location storage usage by VMware vSphere Replication for a virtual machine?
- What is the worst-case source location storage usage by VMware vSphere Replication for a virtual machine?
- What happens if the storage at the target location goes offline for a prolonged perioda few hours, for example?
- If a new virtual disk is added to a virtual machine that is currently being replicated, what is the process to ensure that the new disk is replicated?
- If a virtual disk that is being replicated is removed from a virtual machine, what is the process to ensure that this disk is no longer replicated and is removed from the target location?
- Is it possible to change the size of a virtual machine disk (VMDK) while it is being replicated with VMware vSphere Replication?
- If VMware vSphere Replication is committing changed data to the target virtual disk(s) and there is an unexpected outage, will vSphere Replication retry the update after the outage has been resolved?
- Is it possible to replicate the same virtual machine with a storage array replication solution and VMware vSphere Replication?
- If replication is disabled for a virtual disk, is it possible to reenable it?
- Are there risks or adverse effects when disabling replication for a virtual disk that is part of a virtual machine configured with multiple virtual disks?
- What performance information is available about VMware vSphere Replication?
- Are there logs that show VMware vSphere Replication virtual appliance information?
- What performance overhead exists on the source hosts?
- What performance overhead exists on the target hosts?
- When a recovery point objective (RPO) violation occurs, will a VMware vCenter Server alarm be triggered?
- How far behind can replication get before a full sync is initiated?
- Are there VMware vCenter Server alarms that provide an indication of when an additional VMware vSphere Replication Server virtual appliance should be deployed?
- If Guest OS Quiescing is enabled, what happens when errors are received within the guest OS for Microsoft Volume Shadow Copy Service (VSS)? Are there any alarms or alerts tied to the Guest OS Quiescing feature?
- What VMware vCenter Server alarms are available for use with VMware vSphere Replication?