HP DL120 - ProLiant - G5 Troubleshooting Guide download pdf (Page 42)

Hardware problems 42

CAUTION: Clearing NVRAM deletes the configuration information. Refer to the server

documentation for complete instructions before performing this operation or data loss could

occur.

5. Clearing NVRAM can resolve various problems. Clear the NVRAM, but do not use the backup .SCI file

if prompted. Have available any .CFG, .OVL, or .PCF files that are required.

Internal system problems

Battery pack problems

The battery stops charging or begins to swell

The batteries in BBWC battery packs are a consumable material. After 3 years of service, batteries may not

provide predictable data retention times. If a battery fails completely, the HP Smart Array controller detects

this condition and automatically restricts write cache functions to protect user data. To help ensure

uninterrupted performance levels, HP recommends replacing battery packs at 3-year intervals.

In NiMH batteries, the charging and discharging processes create and recombine inert gases, which can

cause the button cell to swell in size by as much as 20%. Battery packs are designed to stop charging before

excess swelling occurs.

However, if excess swelling does occur, a pressure mechanism within the button cell releases these non-toxic,

non-corrosive gases before the cell incurs physical damage. If this pressure release occurs, the battery no

longer charges properly, and the storage solution reports a failed battery.

CD-ROM and DVD drive problems

System does not boot from the drive

Action:

1. Be sure the drive boot order in RBSU is set so that the server boots from the CD-ROM drive first.

2. If the CD-ROM drive jumpers are set to CS (the factory default), be sure the CD-ROM drive is installed

as device 0 on the cable so that it is in position for the server to boot from the drive.

3. Be sure no loose connections (on page 18) exist.

4. Be sure the media from which you are attempting to boot is not damaged and is a bootable CD.

5. If attempting to boot from a USB CD-ROM drive:

o Refer to the operating system and server documentation to be sure both support booting from a USB

CD-ROM drive.

o Be sure legacy support for a USB CD-ROM drive is enabled in RBSU.

Data read from the drive is inconsistent, or drive cannot read data

Action:

1. Clean the drive and media.

2. If a paper or plastic label has been applied to the surface of the CD or DVD in use, remove the label and

any adhesive residue.

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HP DL120 - ProLiant - G5 Troubleshooting Guide Page 42