I've actually done this before with no problems. I originally had a pair
of SP Wide nodes set up in an HACMP cluster for my Linux box, and for
various reasons, decommision the HACMP while retaining the dual attached
3590's and SSA disks. I was able to successfully (on different disks. ;-)
switch a 3590 drive between two servers. I was using V2 and had to delete
the drives, however, as opposed to marking them offline. I couldn't tell
you how well that would work, however, as I haven't tried it.
At 08:56 PM 2/4/99 , you wrote:
>Hi Simon,
>
>Your suspicions are correct (or at least they are the same as the advice
>that I have received from IBM). According to the IBM advice I have been
>given, sharing a 3590 between multiple applications on one server (including
>multiple instances of ADSM) is OK. However, dynamic sharing of the device
>between multiple machines is not OK. As you suggest, moving a device from on
>machine to another manually is OK. We do this with one of our 3494s with 10
>3590s attached.
>
>
>regards,
>
>Trevor
>
>-----Original Message-----
>From: Simon Watson
>[mailto:Simon.S.Watson AT OPENMAIL.FIC32.BSPSER.SIMIS DOT COM]
>Sent: Friday, February 05, 1999 12:16 PM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Sharing 3590s in a 3494
>
>
>We currently have an ADSM server 3.1... on AIX 4.2 connected to a 3494
>with 2 3590s and we are looking to add more 3590s.
>
>Is it possible to share one or more of these 3590 with a 2nd ADSM
>server (running on HP box) by dual porting the drives. I suspect it is
>not possible to do automatically, however is it possible to do it
>manually by taking the drives offline (within ADSM) on one server and
>then marking them online on the other. It would be nice to have this
>flexibility for disaster recovery situations where you would want as
>many tape drives as possible available for a large restore.
>
>Any feedback would be appreciated.
>
>Regards,
>Simon
-Daniel
------------------------------------------
Daniel Whicker (heimdall AT mail DOT org)
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