From: Dean Boyle
It depends on how you pulled the disk units out. Did you follow the
procedures to replace the units or just pull the units out? It sounds
your disk IOA still has some data in it's cache for disks that are no
on the system. If this is the case and you can't put the original disks
back into the system, you'll need to drop your box to DST and follow the
procedure to Reclaim the IOP Cache Storage....be aware that this often
requires the ASP to be cleared as part of the process.