I recenttly changed to an Dell PERC 6/i RAID-Controller, because it is on the HCL.
Attached is at the Moment 1 WD 1.5TB drive.
After boot, ESXi 5.1U1 sees the Controller and also the attached drive. I then can use it as a datastore - anything fine.
After longer time - hours I guess, the datastore on this specific HD disappears. Also the drive listed under the PERC Controller is grayed and the Name of the drive is in cursive text.
What can I do ?