[Info-vax] backups and compaction or nocompaction might be better

[Stephen Hoffman]

On 2013-01-31 15:38:50 +0000, Paul Sture said:

> In article <7c9d5425-77d6-4a84-a0bf-2e028004a9ca at googlegroups.com>,
>  "pcoviello at gmail.com" <pcoviello at gmail.com> wrote:
> 
>> my backup command
>> backup/noassist/norecord/noinit/ignore=(inter,label)/fast/media_format=compact
>> ion/group=0/image/block=65024
>> 
>> 
>> so basically should I be able to use compaction?
> 
> I don't have a standalone backup disk handy at the moment, but I am not
> sure that standalone backup has the ability to restore compacted backup
> save sets.
> 
> In other words you might not want to use compression on your system disk
> backups.

Definitely try it, but I'd expect it to work.

While you'll need to boot from a version that has the encryption and 
compression support, the OpenVMS I64 bootable backup should be able to 
restore both compressed and/or compressed savesets.   It's "full" 
backup after all, running from a full (albeit read-only) system disk.

The old (and exceedingly limited) standalone BACKUP is found on OpenVMS 
VAX, and on the oldest OpenVMS Alpha releases.

Do also look at burning your own fully-patched and tested bootable 
BACKUP disk, too.  Or at least creating and testing a bootable disk 
brick.



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