For future reference, is there also a problem with removing SAS shelves as well? Or is it just the loop-based shelves?
________________________________ From: Sebastian Goetze spgoetze@gmail.com To: Jeff Cleverley jeff.cleverley@avagotech.com Cc: toasters@teaparty.net Sent: Wednesday, February 13, 2013 4:12 AM Subject: Re: Live disk shelf removal.
Hi Jeff,
it's unsupported, but with some precautions you could minimize the risks of panic:
* evacuate (provided you have enough spares) the shelf using * disk replace start[-f] [-m] <disk_name> <spare_disk_name> * check that all (relevant) disks have 2 paths * storage show disk -p * -> none of the disks should be in use now, all should be spares * you could now: disk remove <disk_name> * spins them down and let's ONTAP know you're about to remove them... * bypass the shelf on the one path (e.g. the upper ESH) * wait a few minutes (~5) to stabilize the ONTAP MP-config * don't know if that is necessary, but better safe than sorry... * bypass the shelf on the other path (e.g. the lower ESH) Of course if you have SyncMirror, it's a lot easier, but even there you should offline the affected plex(es), just to be nice... (e.g. aggr offline MyAggr/plex03)
Hope that helps, tell us how it went...
Sebastian
On 12.02.2013 22:13, Jeff Cleverley wrote:
Greetings, Is there a way to remove DS14 MK4 shelves from a running cluster? I need to look into isolating some drives and removing some shelves and would like to do it without having to halt the cluster. This is a 7.3.5.1 Ontap cluster on FAS6080s. Thanks, Jeff
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