[cisco-voip] Planning to upgrade CM from 4.2 to 8.0.2

[Mike King]

On Wed, Oct 20, 2010 at 10:50 AM, Go0se <me at go0se.com> wrote:
> Finally, if possible we typically like to purchase a new hard drive to
> install the new UCM version onto. Keep the old drive as an emergency backup.
> If something goes wrong simply swap the old drive back into the server and
> you are back to your old 4.2 cluster. Trust me, if you spend several hours
> on an upgrade only to have something go wrong the last thing you will want
> to do is spend several more hours installing a clean copy of 4.2 and then
> restoring a backup.
>
> Go0se

As a note on the swapped Harddrive route, I've been told by TAC that
the MAKE and MODEL of harddrive have to perfectly match.  During our
upgrade, a different brand (Purchased from Cisco) harddrive was used,
and the RAID never rebuilt.

So make sure your RAID rebuilds.

Make sure you use the Hard drive replacement proceedure (not all the
harddrives are hotswappable)