i have the followin issue
was sucssefully mount new lun to ESX4 with no problem then unmap the lun from storage console without unmount it from ESx first after this run rescan storage, the lun dissappear after this when i try to mount this lun or any lun i got the follwoing error "HostDatastoreSystem.QueryVmfsDatastoreCreateOptions" for object "datastoreSystem-156" on vCenter Server failed.
but now it is accepted new LUN 2 T and refused second LUN.
Sorry I don't understand this. Can you please explain.
Anyway, the LUN size limit for ESXi 4 is 2TB minus 512 Bytes. If the new LUN is larger than this size you need to reduce it.