We have an H90 operator workstation that keeps becoming unresponsive
(freezing). It started happening about a year ago, only occasionally at first,
and now it seems every day, sometimes twice in a day. We give it a hard
shutdown, reboot, and it works for a time. When I run HP diagnostics it comes
up with "Long DST: WARNING", so I suspect it may be a hard drive starting to
fail, but no clear sign of actual failure. It has a RAID 1 array, two disks
online (mirrored) and one hot spare. The lights always appear normal, even when
it freezes up. Memory Check and SMART Check show no problems, only Long DST.
Does anyone have experience swapping out the disks in a RAID
array? Would pulling a disk while it's running cause it to fail if it hasn't
failed yet (like pulling a USB drive while the computer is writing to it,
without doing "safely remove")? Is there any risk in swapping out Disk 1 with
the hot spare while the computer is on, without being certain that the disk is
bad? Didn't find any real answer on this by online search.
Also should I assume Disk 1 is the one failing or could it be a
problem on Disk 2?
Another option is shutting down, swapping out the two mirrored
drives with spares and restoring from our backup. We have a few other H90s with
the same type of disk array so I could take the spares from two others to do
this.
Thanks for any suggestions/experience you can offer.
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