-----Original Message----- From: Bhavnesh Makin [mailto:makin@dnrc.bell-labs.com] Sent: Monday, July 10, 2000 10:04 AM To: toasters@mathworks.com Subject: volume/shelf containment

We have a F740 filer with two 18 gig shelves. Each shelf is dedicated to a volume.We have reserved disk on each shelf as a hotspare for that particular volume. So in total we have two hot spares.

Last week one of the disks failed on the first volume and failed disk was recontructed on the spare which was physically present on second shelf. So we ended up with the volume which transgresses over to another shelf. Our goal was to contain each volume to a shelf of its own.

First,is there a way to contain the volumes with hot spares? Secondly how do I make the first volume give up the disk on second shelf and recontruct it on spare which is physically present on first shelf.

As far as I understand it, spares are global to the filer. The filer will pick the smallest spare disk that will fit. So unless you have different sized disks on different volumes, you can't make a filer pick one disk over another.

As far as fixing your current situation. Config your system now so that it only have 1 spare (it may be that way anyway now), then fail over the spare in the 2nd shelf which is now a data drive for the volume on the first shelf. In my opinion, the best way to do this is to run the 'disk fail' command rather than pull the drive. I think it's cleaner since you won't have to cause your lop to reset. Then you will force your volume to rebuild on the only spare in the system, which not so coincidentally is the one you want.

Hope this helps.

-- Adam Fox NetApp Professional Services, NC adamfox@netapp.com