[Info-vax] RAID vs. MOUNT/BIND

[Hein RMS van den Heuvel]

On Nov 18, 3:26 am, hel... at astro.multiCLOTHESvax.de (Phillip Helbig---
undress to reply) wrote:
> In article <uj$d2TvOj... at eisner.encompasserve.org>,
>
> koeh... at eisner.nospam.encompasserve.org (Bob Koehler) writes:
> >    Volume sets can spread files over two physical disks and make them
> >    look like one, but cannot spread a single file over two disks.  So if
> >    there is enough space on the pair for a new large file, but not on
> >    either disk, it won't fit.
>
> >    RAID can split a single file over multiple disks.
>
> Right.  In my case, however, it is many relatively small files rather
> than a few large files.  RAID is of course much more low-level and
> transparent to VMS, but more work to set up.

Volume sets were almost made for that.
They 'balance' space, and with many relatively small files that ends
up balancing files, which on average balances access/load.

But SEARCH LISTS, as I replied about earlier, may help even better for
many smallish file.
Did you spot that comment in my earlier (first) reply? They also
'hide' complexity behind a single logical name similar to volume sets.

>> LD Driver

That's a handy tool allowing you to do 'disk in file', disk on
partition, tracing, fault insertion.
You would not appear to need it for the problem you are dealing with
now.

Hein