Hi Roy, We are considering a DR implementation that's similar to yours - although 500 yards seems a little close for a DR site.
We haven't actually done it yet, but there are two major possibilities. Assuming that you have appropriate SAN and network setup. Further assume active/active use of the two sites. Configure two TSM servers to run one at each site in such a manner that both TSM servers can run on the same physical box on either site. Mirror your disk pools, DB and logs at the AIX level (or using ESS PPRC facilities) so that you can run either server at either site either singly or together. Option 1. Now either dedicate drives in your library to one server or the other or invest in library sharing licences with each server controlling what is normally its local library. Define each library to each server and make the tape primary stgpools go to the local library and copypools go to the remote library. Use each server to back up its local machines. In case of failure, bring up failed server at other site. mark primary copies unavailable and restore as necessary from copypool. You can have scripts on hand to change definitions to allow backups for the failed over clients to continue to the failed over server at the "wrong" library because in a real disaster its going to take you a while to get back. Option 2. If you don't have SAN connection to your remote drives, use server to server to define your copypools as being on the other TSM server and just run stgpool and database backups over the LAN. In the case of disaster you still run both servers on the one machine, but restores are done tape->serverb->internal TCP/IP->servera->client, which will impact machine performance, but requires only a DRM licence on each server. Option 3. You could also physically ship your copypool tapes between the two sites. Never underestimate the bandwidth of a small car loaded with carts. Let us know what you decide and how you get on. Steve Harris AIX and TSM Admin Queensland Health, Brisbane Australia >>> [EMAIL PROTECTED] 17/04/2002 6:27:12 >>> How do you get the "libraries" connected to ESS? Disks can be mirrored but not tapes! I don't think there is a way to do what you say. Maybe some real DRM or HA expert has an answer! I think there is a way for both RS/6000's to see both libraries, takes some extra hardware and config steps. I've seen it done in past just don't have details. However if you loose contact with one library, the second library doesn't have access to the data in the first. David Longo >>> [EMAIL PROTECTED] 04/16/02 07:17AM >>> Hi guys, I am in the situation whereby I have to think about DR soon, and need the best solution. Here is the story so far:- I have a TSM Server on an RS/6000 plugged into a 3583 library on one site. The DR suite is 4 to 500 yards down the road. This has another RS/6000 with a second 3583 library plugged into it for HA purposes. What i need to be able to do, when the Primary Server fails over to the secondary Server (In a HA situation), is to get it to use the second library. Both of the two libraries are plugged into to mirrored ESS's, so both the RS/6000's should be able to see BOTH libraries. What I was thinking of doing was putting copy tapes into the second library, and onsite tapes into the first and utilising both librarys at the same time - can this be done?. If anyone could give me and pointers here as to the best approach or any possible OTHER approaches, then I would be forever in their debt!. Kind Regards, Roy Lake RS/6000 & TSM Systems Administration Team Tibbett & Britten European I.T. 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