now it happens that after boot the icon for LD0 is not showing up on the desktop, or in finder! Using Disk Utility, the volume IS mounted and visible, and when I ask Disk Utility to test, the icon will briefly be visible, and then go away!!! LD0 is for data, LD1 is for backups and LD2 is for timemachine. added Pegasus2 R6 (total 24TB) connected with a corning fibercable. If you do get your volume back online, I suggest running a filesystem via Disk Utility > First Aid just in case.I have just gotten this brand new iMac with 1TB SSD disk. You can only lose one drive in a RAID5 LUN hence, 5 of the drives need to be online in order to access the data since you created a RAID5 Logical Drive out of 6 disks.Ħ.With all 6 drives present, the Operational Status will be OK and not Critical.To bring the Logical Drive back to Critical status, you need to have 5 drives online. If you see a drive with PFA, that states Predictive Failure Analysis (could be bad sectors/errors on the drive) and you should replace that drive with a new one (look at the compatability list to ensure you purchase a qualified/tested drive) - then rebuild the missing sequence.ĥ. (x) = PdID (Physical Drive ID) phydrv -a online -p(x)Ĥ. You can use use the following command to force a drive online:

Check which disk is Dead and which disk is PFA.Ĥ. PdId Model Type Capacity Location OpStatus ConfigStatusġ Hitachi HUA7 SATA HDD 2TB Encl1 Slot1 OK Array0 No.0Ģ Hitachi HUA7 SATA HDD 2TB Encl1 Slot2 OK Array0 No.1ģ Hitachi HUA7 SATA HDD 2TB Encl1 Slot3 OK Array0 No.2Ĥ Hitachi HUA7 SATA HDD 2TB Encl1 Slot4 OK Array0 No.3ĥ Hitachi HUA7 SATA HDD 2TB Encl1 Slot5 Dead Array0 No.4Ħ Hitachi HUA7 SATA HDD 2TB Encl1 Slot4 PFA Array0 No.5Ĭan you post the output of your disks on this forum posting?ģ. Locate the disks that have a Dead or PFA operational status. Use the phydrv command to check the physical drive status. Please use promiseutil HostName:~ user$ promiseutilĢ. Recreate the array (assuming all the required disks are OK - You should contact Technical Support for this method).ġ.From your description above, it sounds like you have (2) drives offline.

Pegasus2 r6 logical drive degraded