Hitachi 3080 G2, Справочник по аппаратуре

Страница: 68 / 129

• Disk redundancy is unsupported while the disk is removed from the server.
Hard disks can fail for a number of reasons, including corrupt sectors or
erroneous blocks of data. Typically, the RAID controller handles these types
of errors and they do not cause the server to fail.
More serious errors may cause a disk failure, causing one or both hard disks
to fall out of the RAID. Should one partition of a disk fail, attempt a disk
recovery. If a partition fails repeatedly, replace the hard disk. If all the
partitions fall out of RAID, replace the failed drive.
Replacing a hard disk drive
The server contains two hard disk drives (HDDs). The HDDs are field
replaceable when directed by Hitachi Data Systems Support Center.
Prerequisites
Obtain the new HDD or HDDs.
Before you replace a hard disk drive, be sure you understand the following
points:
• Do not attempt to replace an HDD unless you are instructed to do so by
Hitachi Data Systems Support Center.
• Failed hard disks are hot-swappable, so a failed hard disk can be replaced
without shutting down the server. However, there are serious risks in
trying to swap a drive that is
not failed.
• Disk redundancy is unsupported while the disk is removed from the server.
Caution:
• Do not remove or replace a non-failed (operational) HDD that is in a
working configuration; that means that the HDD is in use. Replacing a disk
while the disk is in use can cause data corruption or disk damage.
• When ejecting an HDD, be certain that you only press the release button
for the one drive. If you press the wrong release button or both release
buttons, the server will malfunction.
• If, by chance, you eject both of the HDDs, it is highly likely that the
system is corrupted. The best chance for data recovery is to do the
following. Do
not re-insert the drives. First, hard power down the server,
and then re-insert the drives and reboot. When the system comes back
online, confirm whether the NVRAM is recovered.
Both HDDs are located at the front of the chassis behind the bezel. The HDDs
are mounted in drive trays for ease of replacement. The trays are marked
with their drive numbers, A and B. No tools are required for drive
replacement.
68 Replacing server components
Hitachi NAS Platform 3080/3090 G2 Hardware Reference Guide