I just completed a DR test and we had to restore one of our TSM servers from a Data Domain replicated copy. This was our first time restoring a TSM server from a replicated DD copy and after importing the replicated volumes and defining our initiators we set about restoring the TSM database. Our AIX server had been restored from an image (SysBack) and we had a current volhist and devconfig file so we began our restore. If you think that the restore from a Data Domain is not relevant to your environment because you use tape, think again. The Data Domain mimics an STK library with IBM drives and so we had to follow the same directions as anyone using tape backup.
To restore the TSM 6.x DB from tape you must have your volhist and devconfig files. You will need to modify the devconfig so that the only lines are those defining the devclass, server name, and server password; all other lines should be deleted. Then you need lines defining a manual library, a tape drive, and a line defining a path to the drive (which for us was an LTO3 drive).
DEFINE LIBRARY MANLIB LIBTYPE=MANUAL
DEFINE DRIVE MANLIB DRIVE1 ONLINE=YES
DEFINE PATH TSMSERV1 DRIVE1 SRCT=SERVER DESTT=DRIVE LIBR=MANLIB DEVICE=/dev/rmt1 ONLINE=YES
Note: Do not define an element address or serial with the drive, TSM will detect these when you run the DSMSERV RESTORE DB command.
When running the DSMSERV RESTORE DB command TSM will start up and query the devconfig file to retrieve the information on the devclass, drive, library type, server name, and password. Once TSM has successfully queried the tape drive it will query the volhist file for the most current DB backup volume depending on whether you are restoring to the most current date or to a specific point in time. When TSM has identified the volume to use it will prompt you to mount the tape. When I saw the mount I went into the Data Domain web based GUI and moved the DB backup volume from its "virtual slot" to the drive that is /dev/rmt1. Once the tape was mounted, TSM was able to recognize the tape had been loaded and began restoring the DB. If more than one tape is required to complete the restore TSM will prompt you for each tape. With the library web GUI available you can move the tapes as needed and accomplish the restore. Once the restore completes you can bring TSM back up and audit/fix anything that could be out of sync. With the switch to DB2 I was expecting a little more work to get TSM back up and running, but surprisingly it was quite simple.
Now if you don't have a SysBack of your TSM server the rebuild can take a lot longer and requires you to recreate some of the DB2 dependent files. I might have to do a BRM restore without an image in the near future and if I do I'll post a step by step process for everyone. If anyone has already done this and would like to post the process on TSMAdmin let me know.
Chad, you are one of the fines TSM gurus I know (via internet). Got a question regarding this topic:
ReplyDeleteWe restored a tsm version 6 Db (AIX)for testing purposes. However when we brought it up it tried to start a job that was probably running at the time of the backup and it messed up our production libraries. Is there a way to keep the "test" db from contacting the libraries when we start it up so we don't run into this issue? The job that was start was a stgpool backup job. An i am aware of these commands:
NOMIGRRECL
DISABLESCHED YES
EXPINT
Your advice would be much appreciated...
JR
Chad, we are trying to restore our Production TSM Server Version 6, Release 3, Level 0.0 DB to our TEST TSM server in the lab. The same version of TSM is installed on the test server.
ReplyDeleteWe tried to run the dsmserv restore db to yesterdays date but received some errors related to the dev.
Basically wanted to know if TSM is already installed, all we need to do it use the correct volhist.out file, and update the devconfig file and then run the restore? We dont have to do anything with the instance or any of that?
We have a test automatic library but its not mounting the volume.
Thanks,
Michele
Hi Chad,
ReplyDeleteDo you have any experience restoring a database backup from a FILE devclass? We have a DD890 set up as a VTL for a primary pool but will be removing our ATL (3584) once we set up and test replication. I read somewhere that EMC recommends to backup the DB to a FILE devclass.
Thanks,
Brian
Is there a way to track progress of the restore? I can't seem to find any pertinent log files and the messages on the screen pretty much just tell you when the restore starts and finishes.
ReplyDeleteThanks!
Is there any log to verify if system state is restored???what files are restored ..basic details of the restore
ReplyDeleteChad, I need to do a tsm test server version 6.3 restore fro AIX to a different host. So I guess it would be like a BMR. Did you ever post the steps? The server we want to restore is a production server and it will still be up. I know I can create new DB directories but I have some questions (e.g do the directory names, user id, etc have to be the same as on the original server?)/
ReplyDeleteoh and another thing: will restoring a production server to a test server (on same vlan but different IP) affect the production server?
ReplyDeleteThanks Chad. Any idea if restoring a TSM server to a different host (for testing) while the production server is up will cause any intereference with the production host?
ReplyDelete