Of course, I may be being completely stupid here, but this seems like a perfect time for OnTap 5.0 and multiple RAID groups.
Slap 5.x on there, create a raid group on the 9GB disks, migrate all the files from the other shelves (assuming they fit), and delete the old ones.
This spoken w/o actually having 5.x on a box, or even downloading the PDF, but from the description, looks like it should work.
On Mon, 30 Mar 1998, Jim Davis wrote:
Since I've been bugging tech support a lot recently :), I thought I'd ask here first.
We have toaster A, a F520 with 2 SCSI controllers and 3 disk shelves of 4 GB disks.
We may someday have toaster B, a F520 with one SCSI controller and no disks.
Potential plan: buy a shelf of 9GB disks, put it on toaster A, move a shelf of 4GB disks to toaster B, keeping all of the toaster A data on toaster A. Toaster B ends up with an empty file system on its 4GB disk shelf.
Now the mechanics of the move are a little unclear to me. Presumably we hook up the 9GB shelf to toaster A and 'raid fail' each 4GB disk in the shelf we want to move? But there will be 5 9GB data disks, since we have to burn one as a hot spare and one becomes the new parity disk. Will there be a problem with having 7 disks to move data from, but only 5 disks to move data to? There would be enough GBs on the 5 9GB disks, but...