CAM Status SCSI Error

[Grant Peel]

Hi all,

Server crashed.

/var/log/messages shows this started Tues Afternoon:

.....
Nov 27 23:20:40 defiant kernel: (da0:ahc0:0:0:0): Retries Exhausted
Nov 27 23:20:40 defiant kernel: g_vfs_done():da0s1f[READ(offset=48365768704, length=2048)]error = 5
Nov 27 23:25:54 defiant proftpd[863]: defiant.thenetnow.com - MaxInstances (30) reached, new connection denied
Nov 27 23:25:55 defiant last message repeated 35 times
Nov 27 23:26:21 defiant kernel: (da0:ahc0:0:0:0): READ(10). CDB: 28 0 7 61 69 c7 0 0 4 0
Nov 27 23:26:21 defiant kernel: (da0:ahc0:0:0:0): CAM Status: SCSI Status Error
Nov 27 23:26:21 defiant kernel: (da0:ahc0:0:0:0): SCSI Status: Check Condition
Nov 27 23:26:21 defiant kernel: (da0:ahc0:0:0:0): MEDIUM ERROR info:76169c9 asc:11,0
Nov 27 23:26:21 defiant kernel: (da0:ahc0:0:0:0): Unrecovered read error field replaceable unit: e4 actual retry count: 142
....

Could not get anywhere with fsck. Kept Saying 'rerun fsck manually' which I did.

Got the thing up anmd running using the SCSI verify media Utility in the bios. showned one error when it ran, maked the block as bad.

fsck shows all f/s clean now.

LOts of verbage found on google, but nothing that explained anything well.

Disk is about 2 years old, not under heavy load.FreeBSD 6.1

Should I replace?  (Seagate Cheetah SCSI 3 73 GIG).

or is this 'normal' once in a while?

-Grant