[Info-vax] OT: server farm backups

[johnwallace4 at yahoo.co.uk]

On Tuesday, 30 September 2014 19:36:33 UTC+1, Simon Clubley  wrote:
> On 2014-09-30, CRNG <noemail at atthisdomain.gov> wrote:
> 
> > On Mon, 29 Sep 2014 16:35:11 -0700 (PDT), mcleanjoh at gmail.com wrote in
> 
> ><e757e249-6b45-4d1d-85a6-627ba1efcc42 at googlegroups.com> 
> 
> >
> 
> >>They probably take a SAN snapshot then save the data onto other disks. 
> 
> >
> 
> > I've never heard of "SAN".
> 
> 
> 
> Do a search for "Storage area network".
> 
> 
> 
> Some reading to get you started:
> 
> 
> 
> http://en.wikipedia.org/wiki/Storage_area_network
> 
> 
> 
> Simon.
> 
> 
> 
> -- 
> 
> Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
> 
> Microsoft: Bringing you 1980s technology to a 21st century world

Snapshots aren't exclusive to SANS though (as I'm sure you realise).

For example, DEC/CPQ's StorageWorks Virtual Replicator (1999?) was
a set of software (no hardware needed, exceot maybe disk space)
that implemented the snapshot concept in a Windows NT 4 environment.

I think snapshots arrived in StorageWorks arrays roughly the same
time, maybe slightly later.

ftp://ftp.compaq.com/pub/products/storageworks/storage_mgmt/swvr_productprofile.pdf