topic Re: Fbackup tape-usage in Operating System - HP-UX

Fbackup tape-usage

Maarten van Maanen — Fri, 02 Mar 2001 12:09:35 GMT

Is there a way to see how much of the capacity of a (DLT)tape has been used by a fbackup-job ?
Normally it makes a backup of our K370. However, I have a D370 with an (PC) external SCSI-unit with five 9Gb disks which I have to backup also. The D370 cannot do this itself (has only a 8Gb DAT-unit) so I want to cpio all data-files to the K370 so it will run there.

Re: Fbackup tape-usage

Printaporn_1 — Sat, 03 Mar 2001 05:24:59 GMT

Hi,

Normally we cannot exactly check for capacity of DLT because it depend on file type we're backing up and compression ratio.

you can user du command for determind the capacity of files you're backup and compare with DLT specification (20/35/40) non-compress or
(40/70/80) if you use compress device file.
then you can estimate how much spaces left.

Thanks

Re: Fbackup tape-usage

Tim Malnati — Sat, 03 Mar 2001 14:30:49 GMT

Fbackup supports tape devices located on a remote machine (see the man page). There are two issues with this. Fast search marks are not used, so a recovery of an individual file will be slow. The backup itself will be slow through a 10mbs network connection. But cpio is no differenet in this regard. There have been a variety of posts on this subject in the past, but the search engine does not seem to be working this morning. Maybe it will be opertional by the time you read this.

Re: Fbackup tape-usage

Tim Malnati — Sat, 03 Mar 2001 14:31:15 GMT