[Info-vax] HSZ70 drive replacement question

[John Reagan]

"Rich Jordan" <jordan at ccs4vms.com> wrote in message 
news:e5b2b893-6e7d-4bdb-afd3-7772ffcfd09c at c28g2000yqd.googlegroups.com...
>I don't have access to a test system, and haven't touched an HSZ since
> working on an HSZ40 10 years ago; I have HSZ40 docs and the CLI and
> service manual for the HSZ70 being reviewed now.  The units are dual
> HSZ70s in dual-redundant config, HSOF V73Z-0.
>
> Is there a 'best practices' or how-to doc for drive replacement?  The
> manuals seem to be somewhat conflicting (with the years between them
> unsurprising).  Two drive mirrorset with drives on separate channels.
> We want to replace a drive throwing occasional errors with a new unit,
> without involving the spareset drives.
>
> One manual (the HSZ40) says to quiesce the channel the drive is on
> using the button; replace the drive within 30-40 seconds and the
> controller will bring the new drive into the mirrorset and copy to it.
>
> Another says to use the CLI to reduce the mirrorset by removing the
> bad drive (but doesn't reduce automatically bring in a spareset
> drive?) then pull and replace the drive, then re-add the drive to the
> mirrorset.

I've used UNMIRROR to shrink the 2 drive mirrorset down to a single drive 
mirrorset.  Swap the drive and now add it back to the mirrorset.

John