i already got some hard trouble w/ FC7/FC8 shelf numerous error on disk (disapear from the loop) over a long period to fix that, the best is to change the shelf for a good FC9 FC9 seem to be more stable than FC7/FC8 one i can't tell you why, but i worked great for me
you could also try to solelly exchange the Environmental Module at the rear which also hold the F connection it could play a bad role in these error try to move as many disk as you can to a shelf that have no (or less) pb
bye
Kelsey Cummings wrote:
I consult for this company that has an old 740 cluster that is built out with FC8 shelves and primarily ST118202FC and ST318203FC disks with the ocassional X221 18GB gisks.
One of the filers has 2 shelves, the other 8.
The one with 8 shelves is having repeated problems with 'missing disks' - ie where a perfectly good disk just disapears from the loop. I think the missing disk problem may be localized to specific bays on specific shelves but in any event doesn't seem to follow the disk if it's moved. It also seems to affect spare disks more than active disks (I've kept as many spares hot as possible in the boxes due to the age of the disks) but this could just be an artifact of the behavior.
It's a little before my time with NetApps but I seem to recal hearing that these kinds of problems were not uncommon on the FC8/FC9 shelves.
Anyone have any suggestions as to how I can rectify the problems besides replacing the disks and shelves?
-Kelsey