Powering off SSA 7133 d40 drawer 1

[andymoriarty]

We have 2 rs/6000 boxes at separate sites each with an SSA drawer joined to form a loop with disks mirrored from one drawer to the other. A machine room clean is planned at one site requiring that all kit is powered off.

Is enough to just vary any volume groups off at both sites before powering down the rs and the SSA drawer at the site where the clean is taking place?

If this is not a good idea then I would appreciate any helpful suggestions as to the correct course of action.

Thanks in advance

 

[Chapter11]

if you power down the rs6k's, the vgs will automatically be varied off. just shutdown the 6k's first, and the 7133 second, and power up in the reverse order, and you'll be fine.

 

[bi]

If I understand your question correctly, you are planning to power down just one of the RS600s and the SSA drawer that is in its cabinet and keep the other RS6000 and the SSA drawer in its cabinet up and running? Yes, I would varyoff the volume groups on the system you are keeping up before bringing the other system and the SSA drawer in the other room down. Theoretically, I suppose you wouldn't have to since the LVs are mirrored -- you'd just end up with a bunch of stale logical volumes. But I wouldn't do it unless it's necessary. (If you have any NFS mounts from the system being shut down, be sure to unmount those on the system that's staying up, too.)