Re: hardware RAID to copy system?

On Feb 4, 9:28 pm, donotre...@xxxxxxxxxxxxx wrote:
If I take a HD out of an old computer and put it in a new computer I'd
expect it to "just work(TM)" and maybe need some tuning (assuming the
same architecture, etc).

The fact that I'm using 1/2 of a RAID array should NOT screw that up.
The "original" server can boot from one of the two disks. If I boot
another server from the other disk I expect to see a "mirror" of the
configured system. I'm pretty sure I've seen this done with other RAID
controllers.

For what I'm doing this would be a lot more desirable than a Jumpstart
server.

As yet, no one has been able to explain either why it doesn't work or
how to make it work.

It's been explained, but I'll attempt to re-state what's already been
said. Server2 was configured with mirrored disks on the hardware RAID
controller. You then removed BOTH disks, effectively failing, but
*not destroying* the RAID set. When you removed a disk from server1
and plugged it in to server2, the RAID controller doesn't recognize it
as a member of the previously configured RAID set and does nothing
with it. Since the RAID controller's configured boot device is still
the now non-existent RAID set, the system doesn't boot. Here's what
you need to do, from the RAID controller firmware utility:

1) Destroy the previously configured RAID set - I'd suggest removing
the new disk first to make sure the contents don't get clobbered (they
shouldn't, but caution never hurts)
2) Shutdown. Re-insert the new disk.
3) With no RAID configuration, the system should now boot from the
only installed disk
4) Re-create the RAID set with a second disk if you need fault
tolerance

.

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