SCSI drive

Hi i ahve a SCSI drive that it use to work but now is not working. The Sun machine can not read the drive. My question is there is any other way to get the data back from the SCSI drive? I think if i replace the chip board on teh SCSI drive it might help to just buy a new Board but there is any UNIX command to fix the hard drive like in windows we use CHKDSK /f/r
How can i extract the data out it a SCSI drive? doe smy question?
thank you

Does the drive still 'work' - is it alive?

chkdsk == fsck but you need to read how to use it. And the disk device must to show up in the device table - i.e., /dev/rdsk/c1whatever..... fsck is really meant to work only on the character special version of the device in /dev/rdsk.

The device still work, well still spinning but is very noise when it does. When i plugged in the sun machine don't reconize the drive but still spinning.

There are only two reasons a drive is noisy. The bearings are gone, or the heads are touching the disk(s).
The more you run the drive, the more damage you will do to it.
If you are desperate for the data, you should take the drive to a data recovery specialist with a clean room.

i have the same probleme with my scsi drive,my sever didn't work properly,after 3 week my server back to work but it can't read the scsi,i try use boot disk,how to read back the scsi so a can back up my data!
thank you