Back up exec failure

[MGDeckeriii]

i am getting a message while running back up exec. it will begin backing up after about 10-15 minutes i get the folling error and the back up stops. I have ran all the diag from sony on the tape drive and everything checks out with the drive. the server is a GATEWAY 7400 and here is the message
storage device "SONY 1" reported an erro on a request to write data to media. Error reported:the request could not be performed because of an I/O dveice error
does any one have any ideas
thanks
milton

 

[SQLBill]

Try stopping and restarting the Backup Exec services. When I get a similar error, it usually means that BE lost communications with the tape drives.

-SQLBill

 

[MGDeckeriii]

Bill
I have started and restarted several times. it will back up a small amount and stop

 

[sega2sr]

did you try to update the firmware of your device ?

 

[MGDeckeriii]

yes i have updated the firmware for the device this device is only 2 month old and we have had one good back-up which was a partial test back-up that took less than 15 minutes

 

[dogmata]

- Filter the Event Viewer, System logs for ID's 7,9, 11 and 15's >> if you are getting some apply the following:

When performing a backup operation, a device "request to space" and "semaphore timeout" error or, a "SCSI bus timeout" is generated.

http://seer.support.veritas.com/docs/190598.htm

or
How to Troubleshoot Event 9 and Event 11 Error Messages

http://support.microsoft.com/default.aspx?scid=kb;en-us;Q154690

- basically points to "hardware " issues be it with termination, cabling , bad target ID's used (ie. ID's 0,1 or 6 are to be avoided), transferrate is too high, faulty SCSI adapter etc etc

 

[SQLBill]

Have you checked for loose cables? Have you...stopped BE services, rebooted the tape library (or server with the tape device), and then restarted the BE services?

-SQLBill

 

[DuaneN]

I just solved the same problem with our Sony AIT drive. I finally figured out through trial-n-error that i was suffering buffer under-runs.

I solved this by going into the device's properties/configuration tab on the device tab of Backup Exec and tweaking the buffers (in my case I added two more for a total of 12 buffers and raised the highwater count from 0 to 2. This may be further tweaked once the backups are stabilized but it was the first settings that completed a backup for me.) After a couple iterations, I got complete backups.

Hope this helps!
DuaneN