Hi David,

Online disk shelf removal is only supported from ONTAP 8.2 onwards. Since a FAS2040 is not able to run 8.2, the official answer is that this is an unsupported action.

This being said, I've seen it work on systems with 8.1 and lower on it. And since you are slowly decommissioning the FAS2040, you may decide it's worth the risk of hot-removing some shelves...

In any event, the official procedure requires you to destroy any aggregates on the diskshelves to be removed first, and unown all disks before removing a diskshelf. If you want to remove one shelf at a time, you may require several disk move commands to free up one shelf.

Additionally, removing shelves must take into account that FCAL/SAS access to the other shelves must be maintained at all times. This is generally where MPHA comes into play.

Best regards,

Filip

On Wed, Apr 1, 2015 at 5:52 PM, Knight, David <dknight@albany.edu> wrote:

Hi,
We are migrating all data from an old fas2040 to a newer netapp
in a different location. The fas2040 has several DS14 shelves, and one ds4243 shelf.

I wonder if I can just turn off disk shelves as the data is migrated?
Normally I'd just let the disks spin till I had everything safely moved, and
the disk sanitized. But we lost AC in this room, and warm weather approaches.
Can I simply unshare, and unmount all volumes on a disk tray, then turn
the tray off to reduce heat generation?
(later once I know all the data is safe, and snapshots have caught up
on the new system, I'd like to turn the shelf back on, delete the aggregates,
and sanitize the disks)

Will this work? Or will the 2040 be very unhappy if a shelf is turned off?

Thanks for your help
David

David Knight
Department of Atmospheric and Environmental Sciences Tel: (518)-442-4204
University at Albany ES-228 Fax: (518)-442-4494
Albany, NY 12222 Email: dknight@albany.edu

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