BackupPC-users

Re: [BackupPC-users] save backuppc backups on a ultrium tape

2013-11-15 16:16:53
Subject: Re: [BackupPC-users] save backuppc backups on a ultrium tape
From: Les Mikesell <lesmikesell AT gmail DOT com>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Fri, 15 Nov 2013 15:15:43 -0600
On Fri, Nov 15, 2013 at 2:52 PM, Arnold Krille <arnold AT arnoldarts DOT de> 
wrote:

> Using amanda and not just dd to dump the tars has the
> advantage that you get an index of your tape-contents and can restore
> single tars from the middle of the tape.

Amanda is able to dynamically re-order a mix of full/incremental runs
to fit the tape and may need several tapes to complete a restore so
that index is important.   For a static set of fulls (or filled from
backuppc) you could just write them in a fixed sequence to the
no-rewind device and use 'mt fsf' to position to the on you want to
restore.  If you aren't used to writing tapes, you do need to make
sure that the blocking on the writes matches what tar expects on the
restore (usually 10k or multiples).  Amanda takes care of that for you
under the covers too.

-- 
   Les Mikesell
    lesmikesell AT gmail DOT com

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