hdparm -t

gives this error :   Timing buffered disk reads:  read() failed: Input/output error

var/log/messages has these lines  ( lot of them )

Apr  2 13:32:24 hostname kernel: end_request: I/O error, dev 03:00 (hda), sector 246
Apr  2 13:32:24 hostname kernel: hda: tray open
Apr  2 13:32:24 hostname kernel: end_request: I/O error, dev 03:00 (hda), sector 248
Apr  2 13:32:24 hostname kernel: hda: tray open
Apr  2 13:32:24 hostname kernel: end_request: I/O error, dev 03:00 (hda), sector 250
Apr  2 13:32:24 hostname kernel: hda: tray open
Apr  2 13:32:24 hostname kernel: end_request: I/O error, dev 03:00 (hda), sector 252
Apr  2 13:32:24 hostname kernel: hda: tray open

Poweredge 700  has two SCSI drives ( RAID 1).

any ideas why these error msgs?

btw, when i checked earlier today, It didn't give any error msg  &  hdparm -t gave me some speed info.