I have seen a script somewhere in the past that overcame the 2Gb limit by
simulating pressing enter to mount a new tape, there was a restore script
that went with it. It was written before high capacity tape drives were in
general use

Where the hell did I see it.........

Would that be useful?





Regards

Colin





>From: "Dirk Moolman" <DirkM@mxgroup.co.za>
>To: <informix-list@iiug.org>
>Subject: RE: Backup to disk, then tape
>Date: Fri, 13 May 2005 12:59:16 +0200
>
>I haven't done this before, but assume that I can do this by running a
>normal online backup (ontape -s -L 0) to (raw) disk, and then using the
>dd command to copy the raw disk onto tape, seeing that I won't be able
>to use ontape again .....
>
>I then want to restore the tape back onto raw disk (dd), and then use
>ontape to restore this to another system (same setup - a copy of the
>system that was backed up).
>
>
>-----Original Message-----
>From: Simmons, Keith [mailto:keith.simmons@office2office.biz]
>Sent: 13 May 2005 12:24 PM
>To: Dirk Moolman; informix-list@iiug.org
>Subject: RE: Backup to disk, then tape
>
>**** PLEASE DON'T POST HTML ****
>
>The 2 Gb limit is an IDS limit (in IDS7 and IDS9 below 9.4).
>You will only be able to set tape size to 2097152 (2Gb) and
>will get prompted for a new tape every time this size is reached.
>By setting the TAPEDEV to a soft link you can change the link
>to point to a different file for each subsequent 'tape'.
>I assume the disk system you are archiving to is on a totally
>separate controller to where the database is.
>Have you thought about restores? You will need to go through a
>similar mechanism of swapping softlinks from file to file in
>order to restore.
>Where are you backing up your log files? How will you roll them
>forward in the event of a restore?
>Why do you feel back-up to disk is any 'better' than tape?
>
>Keith
>
>-----Original Message-----
>From: ORourke, Scott [mailto:ScottORourke@liberata.com]
>Sent: Friday, May 13, 2005 11:08 AM
>To: 'Dirk Moolman'; informix-list@iiug.org
>Subject: RE: Backup to disk, then tape
>
>
>PLEASE READ THE IMPORTANT NOTICE BELOW. DO NOT OPEN ANY ATTACHMENT
>WITHOUT PRIOR VIRUS CHECKING.
>_________________________________________________ _________________
>
>
>Make sure you don't hit the filesystem and/or IDS file size limit!
>I hit this on 7.31 on SCO Openserver 5.05, where, if I remember
>correctly, think it was 2gig.
>Can't remember if this was a SCO or IDS limit though.
>You can however get round this by setting TAPESIZE appropriately, along
>with some clever scripting.
>-----Original Message-----
>From: Dirk Moolman [mailtoirkM@mxgroup.co.za]
>Sent: 13/May/2005 10:38
>To: informix-list@iiug.org
>Subject: Backup to disk, then tape
>
>
>I have to do some backup testing this weekend, testing a new way of
>backing up our systems.
>I want to backup to disk, and then back the disk up to tape - which I
>haven't done before.
>Any tips / tricks you can share with me ?
>
>
>
>IDS 7.31 FD3
>Solaris 9
>
>
>
>
>
>Dirk Moolman
>Database and Unix Administrator
>HEALTHCORP
>
>
>
>"People demand freedom of speech as a compensation for the freedom of
>thought which they seldom use."
>
>
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