Dell Poweredge R420 Statement Of Volatility
R420 to the manual a85561b9-b795-438a-8d7a-c70b214be8d9
2015-01-05
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Statement of Volatility – Dell PowerEdge R420 Dell PowerEdge R420 contains both volatile and non-volatile (NV) components. Volatile components lose their data immediately upon removal of power from the component. Non-volatile components continue to retain their data even after the power has been removed from the component. Components chosen as user-definable configuration options (those not soldered to the motherboard) are not included in the Statement of Volatility. Configuration option information (pertinent to options such as microprocessors, remote access controllers, and storage controllers) is available by component separately. The following NV components are present in the PowerEdge R420 server. Item NonVolatile or Volitile Quantity Reference Designator Size Planer PCH Internal CMOS RAM Non-Volatile 1 U39 256 Bytes BIOS SPI Flash Non-Volatile 1 U4-1 8 MB iDRAC SPI Flash Non-Volatile 1 U22-1 4 MB BMC EMMC Non-Volatile 1 U45 2 GB System CPLD RAM Volatile 1 U19 8kb System Memory Volatile Up to 6 per CPU CPU1: DIMM1~DIMM6, CPU2: DIMM7~DIMM12 Up to 32GB per DIMM Non-Volatile 1 per PSU Varies by part number Up to 2MB. Varies by part number Power Supplies PSU FW 4x3.5" Backplane SEP internal flash Non-Volatile 1 U_SEP Flash:32KB + 4KB EEPROM: 1KB Non-Volatile 1 U3(SEP) Flash:32KB + 4KB EEPROM: 1KB 8x2.5" Backplane SEP internal flash 02 - 2013 Item Type (e.g. Flash PROM, EEPROM) Can user programs or operating system write data to it during normal operation? Purpose? (e.g. boot code) PCH Internal CMOS RAM Battery-backed CMOS RAM No Real-time clock and BIOS configuration settings BIOS SPI Flash SPI Flash YES Boot code, system configuration information, UEFI environment, Flash Disceptor, ME iDRAC SPI Flash SPI Flash No iDRAC Uboot (bootloader), server managent persistent store (i.e. IDRAC MAC Address, iDRAC boot variables), lifecycle log cache, virtual planar FRU and EPPID, rac log, System Event Log, JobStore, iDRAC Secure Boot Code, BMC EMMC eMMC NAND Flash No Operational iDRAC FW, Lifecycle Controller (LC) USC partition, LC service diags, LC OS drivers, USC firmware CPU Vcore and VSA Regulators OTP(one time programmable) No Operational parameters System CPLD RAM RAM No Not utilized System Memory RAM Yes System OS RAM Embedded microcontroller flash No Power Supply operation, power management data and fault behaviors Integrated Flash+EEPROM No Firmware + FRU Integrated Flash+EEPROM No Firmware + FRU Planer Power Supplies PSU FW 4x3.5" Backplane SEP internal flash 8x2.5" Backplane SEP internal flash Item How is data input to this memory? How is this memory write protected? PCH Internal CMOS RAM BIOS N/A – BIOS only control BIOS SPI Flash SPI interface via iDRAC Software write protected iDRAC SPI Flash SPI interface via iDRAC Embedded iDRAC subsystem firmware actively controls sub area based write protection as needed. BMC EMMC NAND Flash interface via iDRAC Embedded FW write protected CPU Vcore and VSA Regulators Once value are loaded into register space a cmd writes to nvm. There are passwords for different sections of the register space System CPLD RAM Not utilized Not accessible System Memory System OS OS Control Different vendors have different utilities and tools to load the data to memory. It can also be loaded by Dell Update Package from LC or OS (Windows and Linux) Protected by the embedded microcontroller. Special keys are used by special vendor provided utilities to unlock the ROM with various CRC checks during load. I2C interface via iDRAC Program write protect bit I2C interface via iDRAC Program write protect bit Planer Power Supplies PSU FW 4x3.5" Backplane SEP internal flash 8x2.5" Backplane SEP internal flash NOTE: For any information that you may need, direct your questions to your Dell Marketing contact. ______________ © 2013 Dell Inc. Trademarks used in this text: Dell™, the DELL logo, and PowerEdge™ are trademarks of Dell Inc.
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