I've often wondered if it would be possible by taking all applicable volumes/aggregates offline (if there are any that touch said shelf) then disabling the storage adapter that is connected to said shelf.

I would think this would allow for a shelf swap - but the likelihood that the shelf is the only one on an adapter, and that there are no aggregates/volumes on it are pretty slim - so short downtime would be preferable to some sort of cockamamie outage like described above.

This does point out a serious detrimental aspect to the NetApp hardware that I hope is remedied sometime soon - that said, I've seen it as an issue exactly once as a customer and the failure was such that we were still operational until the next maintenance window.

Any benefit to this scenario when running shared storage with the FC Hubs (Cluster + MPIO)?

-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Eric Silberberg Sent: Wednesday, January 23, 2008 11:22 AM To: bacardicoke@gmail.com; rob@lazzurs.net; bmichael@netapp.com Cc: toasters@mathworks.com Subject: Re: Failed shelf

How about in a metrocluster? Same answer? -----Original Message----- From: "Bernardoff, Michael" bmichael@netapp.com To: bacardicoke@gmail.com To: rob@lazzurs.net Cc: toasters@mathworks.com

Sent: 1/23/2008 10:51:46 AM Subject: Re: Failed shelf

As collegues probably pointed out

For the moment shelf remove (hence swap) is NOT supported.

You may add a new shelf to an existing loop and 2 new drives in that shelf and "disk replace"-then-move-the-spares-to-the-new-shelf-and-repeat-until-the-shel f-is-empty-but-the-two-first-slots, but you will not be able to remove this bad-but-now-empty shelf without downtime.

By the way, swapping a shelf can be done quickly if well prepared (5 minutes with 4 hands).

_________________ Michael Bernardoff FSE@netapp +33 679 028 224

-----Original Message----- From: Nils Vogels bacardicoke@gmail.com To: Robert Lazzurs rob@lazzurs.net CC: toasters@mathworks.com toasters@mathworks.com Sent: Wed Jan 23 15:16:57 2008 Subject: Re: Failed shelf

On Jan 23, 2008 3:19 PM, Robert Lazzurs rob@lazzurs.net wrote:

Also this brings me to ask (I think I already know the answer) can you add a shelf to a loop without taking the storage controller down?

Yes, this is possible, as long as the shelf is supported in the already existing loop.

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