[Info-vax] RAID vs. MOUNT/BIND

[JF Mezei]

Phillip Helbig---undress to reply wrote:

>      $ MOUNT/BIND=TEST3013 DSA3011/SHADOW=($1$DUA402:,$1$DUA403:),
>      DSA3012/SHADOW=($1$DUA404:,$1$DUA405:) TEST3011,TEST3012 TEST3013


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 ?

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.

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.

If you go ahead with it, make sure you get the latest LDdriver, not the
one that comes with VMS.