Dreaded Apple RAID card
I have two Apple RAID cards (for early 2009 Mac Pro) - so I could swap them - but the problem persists.
Mac Pro Nehalem 2 x 2.26Ghz (octo). Apple RAID card (the one that is compatible with the 2009 models). 4 x 300 GB WD Raptors (I tried with 4 x WD RE3 - same issue).
The RAID 5 is created at OS install with no problems (OS detects all four drives). After few reboots (various other installs like iLife, FCP Studio etc) the drive in bay 3 disappears and the RAID 5 degrades. Sometimes after zapping NVRAM/PRAM the drive reappears.
Now - the confounding issues:
1. This happens regardless of the RAID card (I have 2 that I am swapping - identical cards - identical issues) - so it is not the card;
2. This happens regardless of how I am shuffling the drives (it is bay-dependent rather than drive-dependent);
3. One would assume that this is a connector issue - but again the RAID is created with no problem and sometimes reappears after resetting the PRAM/NVRAM (not anymore after EFI 1.4 firmware upgrade)
4. It is independent of the graphics card (I changed to an NVidia GT 120) or the absence/presence of the Blackmagic Intensity Pro;
5. It is independent of the memory (I have 16 GB Crucial - changed back to 6 GB Apple original one - no have the same problems).
Any suggestions?
Cristian
Mac Pro Nehalem (early 2009) 2.26 x 2 octo, Mac OS X (10.6.2), ATI 4870, Intensity Pro