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dpm serious issues

Last Modified: 2016-01-14

Are end of month backup to tape job started last week and on pretty much all 9 DPM Servers I am seeing the following error:

"This operation failed because of a protection agent faulire. (ID 998 Details. The device is not connected (0X8007048F) - Retry the Operation"

When looking into event viewer I can see  the following entry:

The back up to tape job failed for the following reason: (ID: 3311)
The operation failed because of a protection agent failure. (ID: 998)

Backup job for datasource: Z:\ on production server: FILE.domain.internal failed.
 Backup job failed at: 31/12/2015 02:51:53.
 Backup Type: tape backup.

there is a entry for the tape library:

hplto: The device, \Device\TapeDrive0, is not ready for access yet.

I've spent a number of hours on this and getting no closer.............I'm pretty stumped due to this happening on MOST of are DPM Servers.........nothing has changed, monthlys have been running perfectly fine all year!

I've updated to the latest firmware and drivers for the tape drive and library
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