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7.0

Ultrium 4 (HP SAS Ex 1760) spits out tapes at 600 GB, saying tape full (native capacity should be 800 Gb!)

Asked by bluemercury in Removable Backup Media, Backup & Restore Software, Backup Exec

Dear all,

If anyone can shed light on this, I would be so greatful. It has had be stumped for over a month.

Basically, we have an ultrium 4 drive as listed, which uses tapes that support 800 Gb of native data. We do not use compression at all.

Our nightly backup data set is approx 672 Gb in size at the moment. It should fit on one of the tapes, with over 100 Gb of space still free.

When the backup gets to about 600 Gb of data backed up (all having gone well up to that point) it spits out the tape, saying it is full. When I check the details of the tape, it shows it is full, but that only about 600 Gb of data was actually copied to it.

We are using Backup Exec, but have also tried doing backups with Yosemite, to check it wasn't some software issue (although I guess there is a small chance both products could be triggering the same fault).

I have also tried using different tapes (5 in all), different brands (Sony & HP), and as stated above, different software. The problem has generally been consistently there. Once it worked! Got me very excited, but then the problem continued with that same tape. Very weird.

I have also tried formatting tapes in different ways before using them, and the drive is now updated to the latest standalone firmware from HP (52D, to my memory). The unit interfaces with a SAS card provided and recommended by HP, for this specific drive.

Any thoughts would be greatly appreciated. It may just be we have a faulty drive (thankfully I think we are just in warranty) but thought I'd put this out in case anyone has experienced the same, and can help!

Many thanks in advance.

Bluemercury
 
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About this solution

Zones: Removable Backup Media, Backup & Restore Software, Backup Exec
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Solution Provided By: bluemercury
Participating Experts: 1
Solution Grade: A
 
 
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