Backup with SAM and fbackup only backs up 250GB to LTO3 tape drive

[A.W.R]

Hi,

We are running HP_UX 11i v11.23 on an HP Integrity servers with an LTO3 tape drive attached.

We make backups from SAM that uses the fbackup utility. Although the tape drive has LTO3 data cartridges load we can only backup about 250GB of data.

ioscan shows the drive as an Ultrium 3-SCSO.

Has anybody come across this before, or have any suggestions as to what might be causing this?

Thanks
Andrew

[Tim Nelson]

Are you sure you are using LTO3/Ultrium3 tapes ?

[A.W.R]

Hi,

Yes we are.

Thanks
Andrew

[Steven E. Protter]

Shalom,

Ultrium 3 is rated 400 GB/800 GB comprssed.

I would suspect either the tape driver is out of date or the system needs a bi-annual patch set, or perhaps a special one for Ultrium. You may want to do a search of the patch database at http://itrc.hp.com

Also, don't have any other devices on the SCSI chain.

Lastly, you may have a bad box of tapes.

SEP

[Tim Nelson]

SEP is typically right.

You can also use the HP StorageWorks Tape Tools program to help with trouble shooting.

Just some simple softare to ID tape drives and volume test them.

It can be found under just about any tape drive software search on the business support center.

here is can example link.
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=443368&prodTypeId=12169&prodSeriesId=443365&swLang=8&taskId=135&swEnvOID=7

[OldSchool]

have you made any modifications the the fbackup config file in sam? if not, have a look at Bill H's response in this thread. It addresses a speed issue, but cranking up the blocks per record may help as it will reduce space lost due to gaps between records....or at least it used to