Dell DR4000 Administrator Guide - Page 91

DR4000 System NVRAM, maintenance --hardware --reinit_nvram - maintenance mode

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FILE LOCATION: C:\Users\bruce_wylie\Desktop\Dell Docs\~Sidewinder_Docs_DR4000\FRAME_Conversion_DR4000_AdminGuide\~DR4000_AG_F 8 Power On the DR4000 system by pressing the power-on indicator/power button. DR4000 System NVRAM NVRAM is a field replaceable unit (FRU) in the DR4000 system, which consists of 8 GB of memory that is divided into four different partitions. The NVRAM double data rate (DDR) memory is backed by a super capacitor, which requires 96% of its charge (4.6V/5.0V) to perform its role. The super capacitor is responsible for moving DDR contents to the solid-state drive (SSD) during a power loss. The data transfer process requires it to maintain power for 3 minutes of operation (normally, it takes approximately one minute). If there is a problem in backing up data into the SSD, a subsequent system reboot detects this issue. NVRAM can experience backup failure when the following occurs: • NVRAM fails to backup the data during a power shutdown • The super capacitor did not maintain sufficient power to backup the DDR contents into the SSD. • NVRAM/SSD encountered end-of-line (EOL) or other errors. If these conditions occur, the NVRAM requires either a failure recovery or a replacement. NOTE: If you need to remove or replace the NVRAM in the DR4000 system, see the "Shutting Down/Starting Up a DR4000 System" on page 82. NVRAM Backup Failure Recovery After you have physically replaced the NVRAM card in a PCIe x4 or x8 slot in the DR4000 system chassis, you can recover from an NVRAM backup failure by completing these tasks: 1 Enter the following DR4000 system CLI command: maintenance --hardware --reinit_nvram This formats the SSD and clears all of the backup and restore logs, by reinitializing the NVRAM. 2 Verify that the DR4000 system enters its Maintenance mode. DELL CONFIDENTIAL - PRELIMINARY 1/10/12 - FOR PROOF ONLY Using the DR4000 System Support Options 83

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Using the DR4000 System Support Options
83
FILE LOCATION:
C:\Users\bruce_wylie\Desktop\Dell
Docs\~Sidewinder_Docs_DR4000\FRAME_Conversion_DR4000_AdminGuide\~DR4000_AG_F
DELL CONFIDENTIAL – PRELIMINARY 1/10/12 - FOR PROOF ONLY
8
Power On the DR4000 system by pressing the power-on indicator/power
button.
DR4000 System NVRAM
NVRAM is a field replaceable unit (FRU) in the DR4000 system, which
consists of 8 GB of memory that is divided into four different partitions. The
NVRAM double data rate (DDR) memory is backed by a super capacitor,
which requires 96% of its charge (4.6V/5.0V) to perform its role.
The super capacitor is responsible for moving DDR contents to the solid-state
drive (SSD) during a power loss. The data transfer process requires it to
maintain power for 3 minutes of operation (normally, it takes approximately
one minute). If there is a problem in backing up data into the SSD, a
subsequent system reboot detects this issue. NVRAM can experience backup
failure when the following occurs:
•
NVRAM fails to backup the data during a power shutdown
•
The super capacitor did not maintain sufficient power to backup the
DDR contents into the SSD.
•
NVRAM/SSD encountered end-of-line (EOL) or other errors.
If these conditions occur, the NVRAM requires either a failure recovery or a
replacement.
NOTE:
If you need to remove or replace the NVRAM in the DR4000 system, see the
"Shutting Down/Starting Up a DR4000 System" on page 82.
NVRAM Backup Failure Recovery
After you have physically replaced the NVRAM card in a PCIe x4 or x8 slot in
the DR4000 system chassis, you can recover from an NVRAM backup failure
by completing these tasks:
1
Enter the following DR4000 system CLI command:
maintenance --hardware --reinit_nvram
This formats the SSD and clears all of the backup and restore logs, by
reinitializing the NVRAM.
2
Verify that the DR4000 system enters its Maintenance mode.