Sorry, I meant what I did was not supported...I was on 8.1...definitely not supported. There was logic put in to allow for the shelf removal as the docs indicate.
Some of that logic also allows the shelf to be reattached....doing so in prior releases can really mess things up which requires a reboot to resolve.
--tmac
*Tim McCarthy* *Principal Consultant*
On Wed, Apr 1, 2015 at 12:15 PM, Blackmor, Chris chris.blackmor@amd.com wrote:
Note that the first document states:
Support for shelf hot-remove
Data ONTAP 8.2.1 and later 8.2.x releases support the hot removal of disk shelves--the physical removal of disk shelves that have had the data evacuated--in multipath HA or single-controller-dual-path (multipath) storage systems that are currently up and serving data. You can hot remove one or more SAS or FC disk shelves from anywhere within a stack or loop of disk shelves, or an entire stack or loop of disk shelves.
Which is why I stated that it depends on the OS and configuration. C-
On 04/01/15 11:10, tmac wrote:
*THIS IS NOT SUPPORTED* I have in the past removed shelves from 7-mode and cDOT systems There was no intent to put them back on the same controller. I had no issues, but that does not mean you won't. As removing shelves from a 7-mode system generally result in the possibility of an unstable system, it is a good idea to reboot shortly after. Or better yet, schedule a reboot and remove the shelves at that time.
A Shelf of disks that are not active does not generate very much heat. Only when they are active will the BTUs increase.
--tmac
*Tim McCarthy* /Principal Consultant/
On Wed, Apr 1, 2015 at 12:01 PM, Blackmor, Chris <chris.blackmor@amd.com mailto:chris.blackmor@amd.com> wrote:
David, Depending on the configuration and OS you can hot remove shelves: https://library.netapp.com/__ecmdocs/ECMP12365050/html/__GUID-8DAA87F5-106C-448A-A27C-__2869A5E7A175.html < https://library.netapp.com/ecmdocs/ECMP12365050/html/ GUID-8DAA87F5-106C-448A-A27C-2869A5E7A175.html> https://library.netapp.com/__ecmdocs/ECMP1610209/html/GUID- __2B80FBD2-007D-4D19-8EB1-__9CCEED211001.html < https://library.netapp.com/ecmdocs/ECMP1610209/html/GUID- 2B80FBD2-007D-4D19-8EB1-9CCEED211001.html>
Good luck. C- On 04/01/15 10:52, Knight, David 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 ismigrated? 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 isturned off?
Thanks for your help David David Knight Department of Atmospheric and Environmental Sciences Tel:(518)-442-4204 tel:%28518%29-442-4204 University at Albany ES-228 Fax: (518)-442-4494 tel:%28518%29-442-4494 Albany, NY 12222 Email: dknight@albany.edu mailto: dknight@albany.edu
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