Thanks to:
Eric Jon ROSTETTER and Kevin Jones.
The original question:
I am setting up an Alpha 4100 (UNIX V4.0D) which has a KZPAC-CA
Array 230/Plus Controller.
It was shipped with one disk group set-up as the boot disk; however
I want to mirror it using another similar 4GB disk.
I have set up the others disks as follows:
8 x 4GB disks as a 16GB RAID 0+1 Logical Disk
1 x 9GB disks as a JBOD disk group
1 x 9GB disks as another JBOD disk group
I recall a similar question and summary a while ago which said that
the boot disk will need to be backed up and the old disk group deleted
and then re-added as a mirror pair and the system restored. And that this
could be done using a spare disk as a temporary boot disk while the real
boot disk is set up.
Does anyone have any comments, reservations or warnings on this approach ?
What is the best way to copy the current boot disk to one of the 9 GB disks
and how do I then boot from this copy of the system ?
Any other advice/tips on this subject will be gratefully received ...
SUMMARY:
The main problem was that all disks were under the control of the RAID
controller.
Our supplier had made a decision to set up the first disk as a JBOD and
to perform a FIS (Factory Installed Software) procedure.
The RAID documentation is very good, except it neglects to tell you until
after the disk group creation steps that only the last disk group can be
changed or deleted !!!!
Having been used to HSZ40s we set up all the other disk groups and
initialised
them; we were planning to go back and mirror the boot disk at a later date.
Suggestions from the list were
* backup the boot disk on tape, as no other disks were available
* do the RAID configuration from scratch
* boot from the CD
* restore the boot image
However, we contacted the supplier, who is quite local, and he offered to
come out
with their spare FIS server (An ALPHA 1000) in the back of his car and to
re-perform
the FIS procedure on our newly re-configured RAID setup.
Once initialisation of the disk groups completed, (even in parallel 30 GB
takes a long time),
the FIS took 20 minutes.
----------------------------------------------------------------
Steve Parker The LIS Warehouse Systems Co.
Project Manager Knaves House
Knaves Beech Business Centre
Phone: +44 (0)1628 859-800 Loudwater
Fax: +44 (0)1628 532-688 High Wycombe
Bucks HP10 9QR
ENGLAND
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Received on Fri Oct 23 1998 - 09:53:05 NZDT