Arcserve - E3713 unable to read from media (media name, EC = UNRECOVERABLE DATA ERROR)

Dear Team,
Arcserve 11.5 sp4 , tape library having single lto 2 drive
Error: E3713 unable to read from media (media name, EC = UNRECOVERABLE DATA ERROR)
AW0083 client agent is being aborted.
I got this error while restoring the file to one of the client machine.
I tried to restore the same files to the local machine which restored successfully. & then I tried to restore the same files to the client machine & surprisingly restore successful.
I wanted to know the reason why earlier arc serve not allowed me to restore the file directly to the client machine...& after restoring the same file to local machine I m able to restore the file to the client machine.
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Chris BRetiredCommented:
Worn tape, failing drive, dirty heads....

Chris B
Feel lucky you were able to read it the 2nd time around. The message is pretty clear, but let me expand on why and what you have to do about it.
Root cause could be anything from something out of alignment, dirty heads, EMI, particulates (i.e, cigarette smoke),  humidity, temperature, voltage spikes and more.  Bottom line is that this particular media+tape drive  is unreliable.  I suggest full tape diagnostics, and make sure you aren't over-using your media.   I would also do a sanity check and make sure you can read some older media.    Rotating tapes by reading old backups and re-writing them is best practice unless you can determine specific root cause.

One of the worst things that can happen is that you can't read your backups.  Discuss this with senior management, and see if it is time for a technology refresh.  This has nothing to do with software, or whatever PC you were using.  Unreadable media is unreadable media.

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