Huawei TaiShan Troubleshooting Manual page 64

TaiShan Servers
Troubleshooting
Fault
Symptom
A RAID
controller
card fails
to identify
one or
more
drives.
A RAID
controller
card
cannot
identify
any
drives.
Issue 12 (2022-08-30)
Handling Procedure
1. Check the number of drives
supported by the RAID
controller card. If the number
of installed drives exceeds the
maximum number supported
by the RAID controller card,
adjust the number of drives or
replace the RAID controller
card based on the site
requirements.
2. Power off the server, swap the
drive that cannot be identified
with a normal drive, and
power on the server to check
whether the drive is faulty.
● If the fault is caused by the
drive, replace the drive.
● If the fault is caused by the
drive slot, check whether
SAS cables are connected
properly to all SAS ports on
the drive backplane. For
details, see the server user
guide.
● If the fault persists, go to 3.
3. Replace the RAID controller
card first, the SAS cables
second, and the drive
backplane third.
1. Check whether the drive
activity indicators light up. If
they are off, ensure that both
the drive backplane power
cables and drives are installed
properly.
2. If the fault persists, check that
the SAS cables and signal
cables are connected properly.
For details, see "Internal
Cabling" in the user guide.
3. If the fault persists, replace
any RAID controller card first,
the SAS cables second, and the
drive backplane third.
Copyright © Huawei Technologies Co., Ltd.
5 Diagnosing and Rectifying Faults
Quick Recovery Method
1. Check the number of drives
supported by the RAID
controller card. If the
number of installed drives
exceeds the maximum
number supported by the
RAID controller card, adjust
the number of drives or
replace the RAID controller
card based on the site
requirements.
2. If the redundant RAID array
fails or no RAID array is
configured, the related drive
partitions are unavailable.
3. Move the unidentified drives
or all drives in the RAID
array to a standby server.
Ensure that you retain their
order during this process
and attempt to back up
data.
4. Follow the handling
procedure to replace any
faulty modules.
Follow the handling procedure
to replace any faulty modules
without changing the drive
installation positions.
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