Hello,
I am planing to move my systems disks to the HSZ40 controller. I am using a
shared SCSI bus and 2 HSZ40 in dual redundant config. Most of my important
storage is protected by RAID but my systems disks are not and it is a
weakness.
I don't have much disks left to play with, and I will have a hard time
going to my boss' office and tell him that I need ANOTHER storage shelf (I
can only put one more shelf in the rack and there is only one port left
available on the HSZ's). I have 3 4Gig drives left, and I need a couple of
these from time to time as a work area for big jobs.
I was considering putting a second internal disk in each of my alpha 2100
and copy the systems disk there from time to time (or mirror it with LSM),
but this would be a pain if ever one breaks, I will have to shut down the
system to get it fixed. And I removed LSM from the system because it was
way more complicated to use than harware raid, for a DU neophyte, I still
wonder what are the advantages of having ADVFS + LSM. I've got the ADVFS
utilities + hardware raid, and apart of software stripping + mirrorring, I
don't see what LSM offers.
Anyway, I am drifting from my questions...
To minimize disk usage, I was wondering if I could "split" a 4 gig drive in
two with HSOF 3.0 partitions, and copy the system disks (2 Gig each) to
these partitions. In case of a system disk failure, I would boot from an
HSZ40 partition.
I know that you cannot use the same HSZ40 device from two different systems
at the same time (you risk data corruption), but I wonder if by any chance,
it was possible to do so with partitions (I mean, machine X uses partition
A and machine Y uses partition B) ?
Also, is it possible to boot from an HSZ40 device ? I heard that you MUST
use a LUN 0 to boot, is this true ?
Provided I can use partitions to copy my systems disks (or I copy my system
disk to a whole disk), I was wondering what to do with SWAP partitions.
What happens when a DU system boots and can't find the disk unto which it's
primary (or any) swap partition is supposed to be ? Does it boot anyway and
ignore that swap space or does it hang there ?
Thanks.
I'll summarize
Guy Dallaire
dallaire_at_total.net
"God only knows if god exists"
Received on Tue Apr 01 1997 - 21:03:40 NZST