Backing up Usermapper?

Question

Once again, I dip into the well of knowledge from you fine Forum folks!

My colleague and I are having a debate about backing up the Usermapper database. We're running Replicator V2 on DART 5.6.42, replicating most of (but not all) VDMs from an NS80 to an NS20 (I'm not replicating test or development VDMs). Since we're replicating the root filesystem of each vdm, I say backing up the Usermapper database is unnecessary. He says it's very necessary, and that we should use the NS20 as the primary usermapper (our replication target) and the NS80 as the secondary (our replication source). Am I nutty or would all of this be taken care of by the failover commands? I'm happily eat crow and change my tune, if I'm wrong. Thanks!

McK · Accepted Answer

You should back up the UM db seperately. It is not included in the VDM. What is being replicated in the VDM is the secmap cache of that VDM.

It is common to put the UM at the target in case of disaster at the source. During failover you would still have the primary UM and be able to assign new mappings to new users. The only time it would not be good to put the UM at the target is if you are prone to network outages between sites making primary UM unavailable to the source site.

If this is the case then keep UM at the source and perhaps run a script/cron to dump the UM db regulary to a replicated FS or have it ftp'd / scp'd etc off to the target site in case you need to restore there in the event of disaster.

umichklewis_ac7b91 · Answer

Thanks for the tip - I'm now eating my humble pie and buying my colleague a beer at lunch. I confused the secmap with the UM db - oops! I'm writing a cron to dump the db to a replicated filesystem. I'll have to update my DR docs to import the UM db on the target side, too. Thanks again!

Celerra

Backing up Usermapper?

Was this post helpful?