[cobalt-users] RAID Error Detected

[Weng Cheong <wengcheong@xxxxxxxxxxxxxx>]

Hi

haven't solve my openwebmail problem on one server, another raq4 pop up
with the above error. after go through some old posting, i got the below
message from /var/log/kernel
but i don't understand whether is it a physical error or software error
if its a physical error how can i replace the hdd, any guide?
and how to identify which hdd is having error?

please advise

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May  7 01:40:24 ns2 kernel: hdc: dma_intr: status=0x51 { DriveReady
SeekComplete Error }
May  7 01:40:24 ns2 kernel: hdc: dma_intr: error=0x40 { UncorrectableError
}, LBAsect=5918973, sector=3647948
May  7 01:40:24 ns2 kernel: end_request: I/O error, dev 16:04 (hdc),
sector 3647948
May  7 01:40:24 ns2 kernel: raid1: Disk failure on hdc4, disabling device.

May  7 01:40:24 ns2 kernel:        Operation continuing on 1 device(s)
May  7 01:40:24 ns2 kernel: raid1: md4: rescheduling block 1823974
May  7 01:40:24 ns2 kernel: dirty sb detected, updating.
May  7 01:40:24 ns2 kernel: md: updating md4 RAID superblock on device
May  7 01:40:24 ns2 kernel: (skipping faulty hdc4 )
May  7 01:40:24 ns2 kernel: hda4 [events: 00000055](write) hda4's sb
offset: 18415552
May  7 01:40:24 ns2 kernel: .
May  7 01:40:24 ns2 kernel: raid1: md4: redirecting sector 1823974 to
another mirror
May  7 01:40:24 ns2 kernel: md: recovery thread got woken up ...
May  7 01:40:24 ns2 kernel: md: recovery thread finished ...
-----------------------