Re: Under VMS, on an HSG80, can Raid Partition Size be Increased?

I ended up booting the system min, and doing disk to disk copies to
move my partitions.
Serious down time!!!

The backups were taking about 2.5 hours each.

Now for the next time I do such re-orgs

The drives are NOT host based shadowed, only controller based raid5.
That's not to say I couldn't talk the client into host based shadowing,
if I can prove it's to their advantage.

I'm reading Bob's presentation as I type.

David I would be very interested in Dynamic Volume Expansion (DVE), any
link would be appreciated.

thanks all


Bob Gezelter wrote:
syslost,

Aside from the comments about the partitions on the HSG80, there is a
potential alternative to a disruptive BACKUP/RESTORE operation.

You did not mention your configuration beyond the RAID usage on the
HSG. If you have Host Based Shadowing enabled on your system (or have
the license), there is another path.

If the RAID set is part of a host-based shadow set, you can use the
combination of Dissimilar device support and Volume expansion to create
a new, larger RAID set, and add the new RAID set to the existing shadow
set. Once the shadow copy is complete (which can be done with the
system fully running production), the original RAID set can be
released.

I presented a session at last year's HP Technical Forum in Orlando. The
session was entitled "Migrating OpenVMS Storage Environments without
Interruption or Disruption". The session notes are available at
http://www.rlgsc.com/hptechnologyforum/2005/1146.html

- Bob Gezelter, http://www.rlgsc.com

.

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