I have an IBM server with a Serveraid 6i controller. The hard drives where set up in a 3 disk RAID5 array + 1 hot spare. About a week ago one the disks developed a fault and the hot spare took over, the rebuild was not entirely succesfull but it was good enough to get us going and eventually all data was recovered. The faulty one was removed and a new one ordered, an original IBM was 10 days away and I was worried one of the other disks could fail prior so I ordered a seagate with same parameters (except for it having a higher RPM). The replacement disk was installed on wednesday night and server continued working, thursday morning the server was not booting! One of the other drives failed during the rebuild.
Last night I received a refurbished IBM original, IBM does not have any of these drives in the country, even though they are less than 4 years old!
I installed the new drive, but because the controller was detecting 2 defunct drives, it was not a case of simply installing the new drive and expecting the rebuild to start automatically. I had to go into the RAID controller (using the bootable disc supplied) and followed instructions on IBM document id: MIGR-39144.
The situation is this now, Slot0 and Slot3 have the original drives, Slot1 has the new drive.When using the IBM boot cd, all of the other slots are empty.Slots 0,1,3 show online and as being members of the array (should Slot 1 be showing this?). Slot4 shows as defunct and when I right click on it gives me the option to REBUILD. SLot 4, I think points to one of my original HDDs (going by the reported serial number)
Prior to receiving the refurbished one, I had tried other second hand disks but they were all reporting PFA errors as well, so I tried them on different slots (always making sure not to confuse them with the good drives), hence slot 2 is empty.
My worry is this, if I select the REBUILD option, is there any risk of losing all of the data? i.e. would this place the exisiting good drives under more stress and thus giving me another failed disk? During the rebuild is anything changed on the original drives, and if so and the rebuild fails, have I lost all hope of recovering my data?
I realize that probably the 2 disk that are left are about to fail pretty soon too.
What are my options? What should I do next?
I have thought of:
a) Set the drive in Slot 1 to defunct and then convert it to a Hot Spare, reboot.(not sure how though)
b) Just right click on Slot 4, click rebuild.
But these are just educated guesses.
Please do not ask me about the tape backups!
Attached is the log from the disks