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TLER and RAID issues with server

post #1 of 2
Thread Starter 
I've got a dell PowerEdge T410 server, which had an array failure in the past. the hard drives were all replaced recently with new Western Digital Black 1tb drives (3 drives) and were put into a RAID5 array.

halfway through installing windows server 2008r2 one drive was marked as failed, and the light was flashing orange. it is very weird for a new drive (especially a WD black) to fail right away. so I did some digging. TLER (Time Limited Error Recovery) is not enabled on WD green, blue, or black drives, and they want you to purchase "RE" drives (Raid Enabled) which are the same as the Black, but with TLER already enabled.

through my searching, I have found WDTLER.zip, which can be gotten from tech support at Western Digital, which is a collection of batch files that can be run from a DOS boot floppy (trying to get a DOS bootable flash drive to work) in order to enable or disable TLER on the drives.

what happens with TLER disabled, is that the drive senses errors and attempts to recover them due to the RAID array, then the RAID controller does not receive a response from the drive and times out, then sends the signal that the drive is bad. the TLER, when enabled, prevents this by limiting the time that the drive does the error recovery and makes the drives stay in the array.

what can I do to get these drives all running in the RAID 5 array and hopefully get the TLER enabled?

and does anybody know an easy way to make a DOS bootable Flash Drive?
post #2 of 2
Thread Starter 
alright, I figured out how to get the WDTLER.zip and bootable DOS Flash Drive working, now I need a better way to connect the drive. I am using an old laptop with the hard drive pulled, booting to the flash drive, and the server drive plugged in via external usb to sata. it was not able to recognize the drive using the usb, so I will be bringing a eSATA to SATA cable with me to work tomorrow to try and access the drive. hopefully enabling TLER on the drives I am using will be all I need to do.
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