Yes, you can use one TSM server as an "electronic vault" for another TSM server.

Look in the Administrator's Guide under the topic "Using Virtual Volumes to 
Store Data on Another Server".

It may not be the best approach, however:

*       The data is sent from the primary server to the secondary server via 
TCP/IP.  How well it works for you will depend a lot on the available 
throughput you have, and the amount of data involved.

*       It may not work like you want:  Server-to-Server virtual volumes create 
an "electronic vault", not a "standby server".  If your primary server goes 
down (or burns up!), the data is safe on the "other" TSM server, but cannot be 
restored directly from the other server.  You have to recreate your pirmary TSM 
server image first.

*       First let me say that I don't even know what "on demand" is, but I'm 
not sure what you mean by "temporary stuff".  If you are talking about backups, 
TSM doesn't really understand the notion of "temporary".  How will you get 
those backups to expire off the "other" server?  Archives are a better choice 
for something that is "temporary".  

*       "Virtual" volumes also have to be reclaimed, and that involves transfer 
via TCP/IP again.  

*       Have you considered creating a second copy pool and just moving the 
tapes of this "temporary" stuff to the other server's location?  It's usually 
faster and easier to manage than virtual volumes, if you have a lot of data.

*       I assume from your question that your TSM servers have separate 
libraries.  I don't have enough information about your config to say for sure, 
but if your library will support it, a better solution may be to use a fibre 
connection to let your 2 TSM servers share one of the libraries, and have your 
TSM "on demand" server write its copy pool into the other machine's library.  

Hope that helps.

Wanda Prather
"* I/O, I/O, It's all about I/O *"  -(me)








 

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Mike
Sent: Wednesday, April 20, 2005 11:25 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: backup stgpool from one server to another?


We have two TSM servers with one that backs up all nodes
on the network (Intel and AIX) and the other that backs
up data specifically written to an OnDemand server (historical,
legal stuff that is kept for 6+ years).

Is it possible to cause the temporary stuff, the files
sent to OnDemand today that are not yet off-site in
6 year storage, to the other general purpose TSM so the
files do get preserved and off site in some way in case
something drastic happens?

Does this make sense?

I'm not trying to change OnDemand, but rather temporarily
send files from one TSM to the other.

Mike