hard disk marked as dead

well after a low level format with seatools i reinstalled the drive and gave the ultra a reboot and it started the rebuild.
My concern is that will happen again.
I have noticed that other people have had the same issue and posted on here about these drives, why are they still on the hardware compatible list if there are issue with them.

Could you send log to me? I need to check raid information and which partitions dropped.

i will send you the logs when i return from work and thanks for the reply.

logs sent for your attention

I have checked kernel.log, It is the Seagate "FLUSH_CACHE_EXT" bug.
Seagate drive has this "FLUSH CACHE EXT" hang problem, the symptom would be exactly same as described:
Entire disk(all partitions) not responding, only power cycle can bring it back.
Seagate recently admitted this issue, they have a test firmware to address this hang issue.

Apr 15 16:36:59 Orac kernel: TCP: Possible SYN flooding on port 36130. Sending cookies.
Apr 17 00:52:35 Orac kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
Apr 17 00:53:36 Orac kernel: ata2.00: failed command: FLUSH CACHE EXT
Apr 17 00:53:36 Orac kernel: ata2.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0
Apr 17 00:53:36 Orac kernel:          res 40/00:01:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
Apr 17 00:53:36 Orac kernel: ata2.00: status: { DRDY }
Apr 17 00:53:36 Orac kernel: ata2: hard resetting link
Apr 17 00:53:36 Orac kernel: ata2: link is slow to respond, please be patient (ready=0)
Apr 17 00:53:36 Orac kernel: ata2: COMRESET failed (errno=-16)
Apr 17 00:53:36 Orac kernel: ata2: hard resetting link
Apr 17 00:53:36 Orac kernel: ata2: link is slow to respond, please be patient (ready=0)
Apr 17 00:53:36 Orac kernel: ata2: COMRESET failed (errno=-16)
Apr 17 00:53:36 Orac kernel: ata2: hard resetting link
Apr 17 00:53:36 Orac kernel: ata2: link is slow to respond, please be patient (ready=0)
Apr 17 00:53:36 Orac kernel: ata2: COMRESET failed (errno=-16)
Apr 17 00:53:36 Orac kernel: ata2: limiting SATA link speed to 1.5 Gbps
Apr 17 00:53:36 Orac kernel: ata2: hard resetting link
Apr 17 00:53:36 Orac kernel: ata2: COMRESET failed (errno=-16)
Apr 17 00:53:36 Orac kernel: ata2: reset failed, giving up
Apr 17 00:53:36 Orac kernel: ata2.00: disabled
Apr 17 00:53:36 Orac kernel: ata2.00: device reported invalid CHS sector 0
Apr 17 00:53:36 Orac kernel: ata2: EH complete
Apr 17 00:53:36 Orac kernel: sd 1:0:0:0: [sdb] Unhandled error code
Apr 17 00:53:36 Orac kernel: sd 1:0:0:0: [sdb]  Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Apr 17 00:53:36 Orac kernel: sd 1:0:0:0: [sdb] CDB: Read(10): 28 00 00 30 c2 e0 00 00 08 00
Apr 17 00:53:36 Orac kernel: end_request: I/O error, dev sdb, sector 3195616
Apr 17 00:53:36 Orac kernel: md/raid1:md0: sdb1: rescheduling sector 3195528

thanks evan do you hve a link to the firmware i require and will i need to rebuild each frive after the flash is performed