No special support with all the SCSI adapters that I've dealt with - mostly
Adaptec and QLogic.  The hardware has been capable of this for years and
I've used this on many OpenVMS clusters and NT "clusters".  The initiators
don't talk to each other, and the devices have to be capable of doing a SCSI
disconnect.  All arbitration and locking for the robot and drives takes
place in the TSM Server.

Might ease your library movement, but I've never tried crossing the data
tapes between platforms.  It's certainly unsupported so you'd want to
rewrite the tapes even if it worked.  Is that what you're thinking?

Bill Smoldt
STORServer, Inc.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of
Robin Sharpe
Sent: Wednesday, January 09, 2002 5:49 AM
To: [EMAIL PROTECTED]
Subject: Re: library sharing without SAN


Does a configuration such as that need special support by the library?
What happens if both systems send commands to the robot?  Also, what about
the drives?  Most SCSI libraries I know of have the drives cabled directly
on their own SCSI channels.  Definitely the two I have... an ATL P3000 and
an HP 20/700.  This sounds very interesting, and I'm wondering if I can use
it while we migrate from the P3000 to the 20/700.  Currently they are
attached to two different servers - the P3000 to an F50 and the 20/700 to
an HP L2000.  As far as I know, the method of recording data on DLT tapes
differs on those two OSes, and they cannot read each others' tapes.

Robin Sharpe
Berlex Labs



                    Bill Smoldt
                    <smoldt@STORS
                    OL.COM>       To:    [EMAIL PROTECTED]
                                  cc:    (bcc: Robin Sharpe/WA/USR/SHG)
                    01/09/02      Subject:
                    08:54 AM             Re: library sharing without SAN
                    Please
                    respond to
                    "ADSM: Dist
                    Stor Manager"







You can connect a library on a SCSI bus between the two systems and share
the library the same way as you would in a SAN.  I've never tried it
between
Solaris and Windows, but it should work fine as long as the controllers
don't interfere with each other electrically (they will typically be
different brands).

The controllers must have different SCSI target addresses - I usually use
the default of 7 on one and 6 on the other.

If you just want to get some experience with shared libraries within TSM,
the simplest method is to create a second TSM server instance on the same
system.  Then you can define a shared library between the two.  I use this
method for training classes.

Bill Smoldt
STORServer, Inc.

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of
Chandrasekhar CR
Sent: Wednesday, January 09, 2002 1:54 AM
To: [EMAIL PROTECTED]
Subject: library sharing without SAN


hello ,

For experimental purpose can we use autochanger for sharing between two TSM
servers ( solaris and windows )  without SAN ,if yes then what is the
procedure to do it.

if any one know about this please help me.

TSM administrator

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