[Info-vax] OpenVMS x64 Atom project

[Phillip Helbig undress to reply]

In article <s9h2t7$1qvs$1 at gioia.aioe.org>, =?UTF-8?Q?Arne_Vajh=c3=b8j?=
<arne at vajhoej.dk> writes: 

> > Yes, there is little point in doing a backup if you don't test the
> > restore.  But imagine, say, a database of several hundred terabytes.
> > Even if you can restore it, you can't necessarily tell if the data are
> > somehow corrupt.  Yes, checksums and so on will catch some things, but
> > not all.
> 
> Traditional BACKUP only works good on a system with no activity.
> BACKUP/IGNORE=INTERLOCK does not solve the problem.
> 
> To get a consistent backup of a large database, without significant
> downtime, then one need a snapshot capability where updates after
> time T does not change what is being backed up.

Presumably with a database one would do a database backup, e.g. 
RMU/BACKUP, which gives a consistent result.