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Down Master Server - Potential Solutions

Created: 06 Mar 2013 • Updated: 08 Mar 2013 | 6 comments
This issue has been solved. See solution.

I am relatively new to Netbackup and I have a question about a worst case recovery scenario. My question revolves around losing our Master server and how we could recover from that. Would it be possible to either move tapes from the down master server to a different master server (assuming they’re both are the same model, OS, and Netbackup version), or could I perhaps promote the media server to be the new master?

Thank you!

Operating Systems:

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Marianne's picture

You can only recover catalogs to a server with same hostname, same NBU installation path and same version and patch level.

There is no 'promote media server to master' other than renaming media server to master server hostname and re-installing as master, followed by catalog recovery.

Disaster recovery and master server recovery is covered in NBU Troubleshooting Guide.
You did not mention your NBU version - links to all NBU manuals can be found in 'Handy NBU links' in my signature.

Hope this helps!

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

Stumpr2's picture

as usual, Marianne is spot on. The troubleshooting guide is very well written and definitely worth the time to read. This forum probably is not the place to be planning your DR plan/procedures. There are so many different steps for different architecture. You may already have a DR team, if not then a company wide effort should be initiated involving all support groups. Its a big operation. but if it is a single instance of rebuilding just the master server after a crash, or whatever, then get thee to the library :-)

VERITAS ain't it the truth?

MetalGirl's picture

Thank you for the quick responses! I really appreciate it. These questions were requested by my supervisor. We do already have some DR plans in place, but we want to make some changes which depended on the answers given.

Thank you for the links! I will look into them.

Stumpr2's picture

ayep, DR is one thing and some companies have wonderful DR plans, but sometimes they overlook losing a single media server, data domain or whatever. Best to be prepared in advance as it is much easier to follow a well thought out plan instead of making one up as you go. Especially if your management like to park it right where you are trying to work.

VERITAS ain't it the truth?

Marianne's picture

Excellent reading material is this doc: 
NetBackup in Highly Available Environments Administrator's Guide http://www.symantec.com/docs/DOC5183   

Herewith a list of DR-related TN's shared by Alex Davies at Vision in 2010:
 
http://www.symantec.com/docs/TECH50942  – conditions for support for catalog replication
http://www.symantec.com/docs/TECH66060  – guide to site recovery operations
http://www.symantec.com/docs/TECH125520 – replicating catalogs with non-clustered master servers
http://www.symantec.com/docs/TECH125519  – replicating catalogs with clustered master servers
http://www.symantec.com/docs/TECH125518  – recovery procedures for dual domain catalog replication
http://www.symantec.com/docs/TECH28722  – partial catalog recovery/recovery without import
http://www.symantec.com/docs/TECH72198  – recovering catalog backups from advanced disk storage
http://www.symantec.com/docs/TECH125784 – recovering catalog backups from duplicate copies
 
I also found some newer TNs:
 
http://www.symantec.com/docs/HOWTO75161 - About catalog recovery from disk devices in NetBackup 7.0 and 7.1
http://www.symantec.com/docs/HOWTO32925 - Recovering the entire NetBackup 7.0 or 7.1 catalog using bprecover -wizard
http://www.symantec.com/docs/TECH157454 - Catalog recovery from copy 2 on an OST device
http://www.symantec.com/docs/TECH127922 - More information about usage of the "nbcatsync"
 
So, there is no 'one-size-fits-all' DR solution.... You need go through all the available documentation and decide on a solution that will work for YOUR environment.
 
Then, do regular DR tests to perfect your own step-by-step process.

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

SOLUTION
MetalGirl's picture

Oh wow, thank you! I really appreciate all the links!