0
votes
1answer
82 views

dd unable to write to tape drive

I'm trying to dump our online backups to tape; for obvious reasons I want to encrypt the data on the tapes, so to write to the tape I need to tar everything up, pipe that to openssl to encrypt it, ...
1
vote
1answer
118 views

How do I untar multiple archives from tape?

I have a tape with multiple tar files on it. I do not know how many (it was created by a third party and sent to me with minimal information). How do I untar all the files without having to repeat the ...
4
votes
4answers
338 views

Ultrium 3 tape drive shoe-shining, 3Mb/s: and it's not the cable

I have a HP 960 Ultrium 3 tape drive. Since I got it, (second hand, £90) I've been experiencing shoe-shining. Writing with tar in Linux, I average about 3Mb/s write speed. I've tried replacing both ...
0
votes
1answer
176 views

tar from tape never finds directory I want

I'm a newbie when it comes to working with tape backups. I'm trying to extract a directory from a tape archive, and not getting much success. The directory on the tape is of the format ...
3
votes
4answers
3k views

How to list the files on a tape with tar?

On a HP-UX OS I have a backup on a magnetic tape created from the SAM. Everywhere I read the instructions to list-verify the contents of the tape is to use the TAR program: #tar tvf ...
3
votes
1answer
457 views

Does tarring up small files into one big tar file before writing them to tape increase the level of data loss when an error occurs?

I've been looking at our backups recently and noticed that the tape throughput is a lot lower when writing lots of small files, so was thinking of tarring those small files up into one big tar file ...
5
votes
2answers
291 views

tar file modified bit (am I being BS'd to?)

I'm working on a project where I'll be using tar to incrementally backup data on a server to a number of tapes. According to a senior co-worker of mine, tar will "set special flags on files so that ...