Server crash due to an Raid error.... help

[thinkdifferent]

hello,

my server sometimes crash due to an Raid mirroring error, this is my syslog :

Apr 17 12:05:19 gnux64 ASC=0x0 ASCQ=0x0
Apr 17 12:05:19 gnux64 end_request: I/O error, dev sda, sector 4319
Apr 17 12:05:19 gnux64 raid1: sda1: rescheduling sector 4256
Apr 17 12:05:19 gnux64 raid1: sda1: redirecting sector 4256 to another mirror
Apr 17 12:05:49 gnux64 ata3: command timeout
Apr 17 12:05:49 gnux64 ata3: translated ATA stat/err 0x51/04 to SCSI SK/ASC/ASCQ 0xb/00/00
Apr 17 12:05:49 gnux64 ata3: status=0x51 { DriveReady SeekComplete Error }
Apr 17 12:05:49 gnux64 ata3: error=0x04 { DriveStatusError }
Apr 17 12:05:49 gnux64 sd 2:0:0:0: SCSI error: return code = 0x8000002
Apr 17 12:05:49 gnux64 sda: Current: sense key=0xb
Apr 17 12:05:49 gnux64 ASC=0x0 ASCQ=0x0
Apr 17 12:05:49 gnux64 end_request: I/O error, dev sda, sector 4327
Apr 17 12:05:49 gnux64 raid1: sda1: rescheduling sector 4264
Apr 17 12:05:49 gnux64 raid1: sda1: redirecting sector 4264 to another mirror
Apr 17 12:06:19 gnux64 ata3: command timeout
Apr 17 12:06:19 gnux64 ata3: translated ATA stat/err 0x51/04 to SCSI SK/ASC/ASCQ 0xb/00/00
Apr 17 12:06:19 gnux64 ata3: status=0x51 { DriveReady SeekComplete Error }
Apr 17 12:06:19 gnux64 ata3: error=0x04 { DriveStatusError }
Apr 17 12:06:19 gnux64 sd 2:0:0:0: SCSI error: return code = 0x8000002
Apr 17 12:06:19 gnux64 sda: Current: sense key=0xb
Apr 17 12:06:19 gnux64 ASC=0x0 ASCQ=0x0
Apr 17 12:06:19 gnux64 end_request: I/O error, dev sda, sector 63
Apr 17 12:06:19 gnux64 Buffer I/O error on device md0, logical block 0
Apr 17 12:06:19 gnux64 lost page write due to I/O error on md0

my computer is a 64bit 3000+ with 2 ATA 250giga drive brand new...
thanks for helping me

Guillaume.

[thinkdifferent]

please if someone could help me....

thx