The original post was:
> Hello,
>
> I've a question about disklabel for a disk connected to
> the SWXCR controller (KZPSC-BA).
> We had the disk RZ28D connected to the controller KZPAA-AA.
> Now we bought the RAID controller KZPSC-BA and 2 additional
> disks RZ29B.
>
> The current configuration of StorageWorks RAID Array subsystem is:
> all 3 disks are connected to KZPSC-BA and configured as 2 logical drives
>
> re0 - KZ28D as JBOD (system disk)
> re1 - 2x KZ29B as RAID-1
>
> My question:
> Is necessary to write a new label on the drive re0 (a type SWXCR) or
> can I keep a old label (a type RZ28D)?
>
> System: Alpha Server 4100 / Digital Unix 4.0B
>
I got three responses.
>From Paul Kitwin <PAUKIT_at_HBSI.COM>
If it's a JBOD, the rz28 disklabel should be fine.
>From singhh_at_vrinet.com
You might want to label it as SWXCR to be on the safe side.
From: alan_at_nabeth.cxo.dec.com
As soon as you connect a disk to a SWXCR it ceases to be
whatever type it was originally. The controller takes
some of the space on the disk for its own use. This
makes the disk smaller than the original type. Some
components of the system in older versions are too
trusting when the label says a device is a particular
size. I think AdvFS has this problem. The result is
when you try to use the sectors that aren't there bad
things begin to happen. UFS doesn't have this problem
because one of the first things newfs(8) does is to try
and write the last claimed sector.
Relabel the drive and realize that it will almost certainly
shrink a little.
What wrote Alan, a man from Digital suggested me too.
So I've relabeled the drive as SWXCR.
Thanks to all who replied.
Bohus Plucinsky <plk_at_svf.stuba.sk>
Slovak Technical University
Bratislava, Slovakia
Received on Wed Jul 02 1997 - 15:51:39 NZST