Could you not start a second instance of the server on the target server,
restore
the db from the source server into this second instance?
Then the server-to-server would still operate, but it would be within the one
machine!
In theory, of course...
M.
>This is such a key point when considering server-to-server! The short
>answer to this question does not begin to actually tell the story.
>
>Kelly J. Lipp
>Storage Solutions Specialists, Inc.
>PO Box 51313
>Colorado Springs, CO 80949
>lipp AT storsol DOT com or kelly.lipp AT storserver DOT com
>www.storsol.com or www.storserver.com
>(719)531-5926
>Fax: (240)539-7175
>
>
>-----Original Message-----
>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
>Prather, Wanda
>Sent: Thursday, April 18, 2002 11:45 AM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Re: Offsite Mirror of TSM server
>
>
>I did not intend to imply you can't restore the DB from the target server.
>What I meant is that you cannot restore client files from the target server.
>You have to get the source server up and running again.
>
>It's really no different from any other DR situation. If you lose your
>primary TSM server, you have to go and get the tapes out of the vault and
>reload the DB before you can do client restores. With server-to-server,
>your vault is electronic, so you don't have to physically go and get the
>tapes, the data comes over the wire.
>
>But you STILL have to reload the DB of the source server.
>
>
>
>-----Original Message-----
>From: Zoltan Forray/AC/VCU [mailto:zforray AT VCU DOT EDU]
>Sent: Thursday, April 18, 2002 2:36 PM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Re: Offsite Mirror of TSM server
>
>
>That is what I guessed from the docs. I was hoping I was wrong !
>
>So, of what value would a DB backup to a "target" server be ? I could
>never recover from it !!!
>
>Sounds like a partially implemented and of very limited use feature, to me
>!!
>
>Is anybody out there using a "target" server to perform backups of any
>kind ? If you do, the better question would be, why and how ?
>
>
>
>
>
>"Prather, Wanda" <Wanda.Prather AT JHUAPL DOT EDU>
>Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>04/18/2002 01:03 PM
>Please respond to "ADSM: Dist Stor Manager"
>
>
> To: ADSM-L AT VM.MARIST DOT EDU
> cc:
> Subject: Re: Offsite Mirror of TSM server
>
>
>My understanding is that when you use source/target server, you think of
>the
>"target" TSM server as just an electronic vault. It is NOT the same as
>having a backup TSM server.
>
>As you said, the objects in the target server's data base are archive
>objects. The metadata needed to restore the data is still in the DB of
>the
>SOURCE server.
>
>So you won't be able to do restores, until you build a repair/recovery
>source server and reload its DB. Now someone else might reasonably expect
>to reload the DB into a TSM server at the offsite location; but since you
>are planning for the target/source TSM's to be on different platforms,
>that
>won't be an option.
>
>You will need to rebuild the TSM server on your OS/390 recovery machine,
>wherever that is.
>
>
>
>-----Original Message-----
>From: Zoltan Forray/AC/VCU [mailto:zforray AT VCU DOT EDU]
>Sent: Wednesday, April 17, 2002 1:46 PM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Offsite Mirror of TSM server
>
>
>Let me preface this with, I am not sure how to completely ask these
>questions since I don't have all of the details but hopefully someone can
>give me some idea of how TSM can/will handle this, if at all possible.
>
>Current configuration: TSM 4.1 on OS/390 using 3590B tape drives in a
>3494 ATL
>
>Requirements as I understand them: Setup a off-location "hot site" backup
>TSM server that will have copies of everything the main server and/or
>other TSM server (we are working on splitting the TSM traffic/load onto
>another TSM server) has. The "hot site" server will probably be an AIX
>box with 3590E (possibly FC) drives.
>
>I have looked into the source/target server issue but am a little confused
>since the "target" server will only see things that come from the "source"
>server as archive objects.
>
>If the building with the "source" server burns down (and this same
>building also houses a majority of the clients that are backed up !), how
>would the "target" server be used to restore all of the client nodes ?
>
>How about the database backups that are sent to the "target" server ? What
>use are they if you have to have the "source" server to identify what is
>on the "target" server ?
>
>Should I/could I setup database mirror volumes on a remote (target ?)
>server over simple IP connections or is this only possible with DASD using
>XRC processes....especially since the current, main database is on OS390 ?
> If this was moved to an AIX box, how would this be handled ? NFS ???
>
>As you can tell, any and all guidance is greatly appreciated !!!
>----------------------------------------------------------------------------
>------------------------
>Zoltan Forray
>Virginia Commonwealth University - University Computing Center
>e-mail: zforray AT vcu DOT edu - voice: 804-828-4807
>
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