I just got back from "NetApp 202 Advanced System Admin & Troubleshooting" class. They went over a similar scenario. They had two volumes, one on each of two controllers. (they said that there is 10 percent performance hit, when drives in an volume are on different controllers). For example, if they had two volumes, each with six drives, and the all of the drives for the first volume were on the first controller and all of the drives for the second volume were on the second controller. And then a drive failed in the second volume, and rebuilt on a spare on the first controller. There would be a 10 percent performance hit, every time you accessed the second volume.
This is what they said to do to:
Replace the failed drive in the second volume. Then pull out all of the spares, including the one that was used to rebuild the second volume. This will force the volume to rebuild on the new drive.
Bhavnesh Makin wrote:
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.
I hope I made myself clear.
Thanks,
Bhavnesh