[Info-vax] RAID vs. MOUNT/BIND

[H Vlems]

On 18 nov, 09:29, hel... at astro.multiCLOTHESvax.de (Phillip Helbig---
undress to reply) wrote:
> In article <4ce3ed4c$0$17369$c3e8da3$b280b... at news.astraweb.com>, JF
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> Mezei <jfmezei.spam... at vaxination.ca> writes:
> > Phillip Helbig---undress to reply wrote:
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> > >      $ MOUNT/BIND=TEST3013 DSA3011/SHADOW=($1$DUA402:,$1$DUA403:),
> > >      DSA3012/SHADOW=($1$DUA404:,$1$DUA405:) TEST3011,TEST3012 TEST3013
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> > I was warned against mount/bind, but I used it to create a large enough
> > disk based on DSSI drives to emulate a single larger SCSI disk I had on
> > the Microvax II. I went ahead anyways. Whay could possibly go wrong ?
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> > LD driver went wrong, and when creating on large file, instead of
> > writing to the blocks on the right physical disk, it overwrote data on
> > the first physical disk of the set. I lost a lot of data and time
> > because of this.
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> > While LDdriver has since been fixed, I am rather weary of MIUNT/BIND
> > because I suspect there may be more utilities that were written without
> > any thought about multi volume disks.
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> > If you go ahead with it, make sure you get the latest LDdriver, not the
> > one that comes with VMS.
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> Naïve question here: what is LDDRIVER and why would I need it?  - Tekst uit oorspronkelijk bericht niet weergeven -
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> - Tekst uit oorspronkelijk bericht weergeven -

It is the logical diskdriver for VMS. It allows you to mount files as
disks, or as tapes for that matter.
It is shipped with VMS, for newer versions see www.digiater.nl.
I copied all the freeware cd's on Tru64 to a single file with the dd
command.
The outputfile of dd is then copied to a VMS disk and mounted on an
LDAn device.
So each cd is seen as a seperate disk.Before that I used backup to
transfer all files from a cd to a
directory on a harddidsk.Took more time.
Hans