Dell PowerEdge R930 Dell PowerEdge R930 System Owners Manual - Page 3

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) Planer PBG Internal CMOS NVRAM Battery-backed CMOS No NVRAM Real-time clock and BIOS configuration settings BIOS SPI Flash SPI Flash No Boot code, system configuration information, UEFI environment, Flash Disceptor, ME iDRAC SPI Flash SPI Flash No iDRAC Uboot (bootloader), server management 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, IDRAC SDRAM IDRAC SDRAM No Video memory written by IDRAC memory interface. BMC EMMC eMMC NAND Flash No Operational iDRAC FW, Lifecycle Controller USC partition, LC service diag., LC OS drivers, USC firmware CPU Vcore and VSA OTP(one time No Regulators programmable) Operational parameters System CPLD CPLD No Operational parameters and system control. TPM EEPROM No Stores encryption keys for TPM functionality Power Supplies PSU FW Embedded microcontroller No flash Power Supply operation, power management data and fault behaviors 24x2.5" SAS Backplane BP FRU image I2C EEPROM No FRU 16+8x2.5" PCIe SSD Backplane SEP internal flash Integrated Flash+EEPROM No Firmware + FRU 4x2.5" 12GB Backplane SEP internal flash Integrated Flash+EEPROM No Firmware + FRU