Re: [Veritas-bu] Can a Single NetBackup Client talk to MultipleMaster?Media?
2008-03-20 12:44:57
This won't work with the incremental backups. The second master server will think that nothing was backed up and do another full, and hike up their WAN usage.
But I do agree that having one master server with a media server at each site is the better way to go.
----- Original Message ----- From: "Jonathan Martin" <JMARTI05 AT intersil DOT com> To: VERITAS-BU AT mailman.eng.auburn DOT edu Sent: Wednesday, March 19, 2008 5:38:49 PM GMT -06:00 US/Canada Central Subject: Re: [Veritas-bu] Can a Single NetBackup Client talk to MultipleMaster?Media?
Yes, you can configure multiple masters as "media servers" and the client will respond to both masters. The correct way to do this (IMO) is to make each branch site a Media server, with the master in the data center. You can do it your way but the first incremental backup will still be a full since there is no "last" backup to run against.
Single Master - Branch Media Servers PROS: You can run one policy and write both locally to the branch and centrally to the master CONS: If the wan link goes down no backups will fire (until the link comes back up)
Multiple Masters PROS: If the wan link goes down backups will still happen CONS: The client will have no clue what is being backed up to where, so things backed up locally in the full will still get backed up by the incremental.
Have you considered data de-duplication? For the price of a library in most cases you can put 500GB in de-duplicated storage onsite in an appliance. I'm not sure what your budget looks like but with a SAN Media server on the branch server you could write the data locally to the deduplication device and then replicate only the changes back across the wan to the data center. You get the benefits of a local backup (speed) and the safety of having a copy offsite (DR.)
Your SLA - is that time to restore an entire down server or just a user request for files? If you want to put the entire server back in les than 4 hours your are going to require backups onsite (replicated offsite) and something like Bare-Metal Restore (comes standard with Enterprise licenses, I think.)
I love the challenge of architecting a solution.
Good luck!
-Jonathan
-----Original Message----- From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of srabbi Sent: Wednesday, March 19, 2008 12:31 PM To: VERITAS-BU AT mailman.eng.auburn DOT edu Subject: [Veritas-bu] Can a Single NetBackup Client talk to MultipleMaster?Media?
Hi All,
I am designing a centralized backup/restore solution for 100+ branches. We are currently using NetBackup to do the data backup at a local tape library attached to each branch server. Our business folks do not want to mount/unmount tapes for weekly and incremental backup. So my task is to find an innovative way to solve this tape handling problem. We also have a very strict SLA for data restore ( 4 hrs) with business.
I am wondering if I can keep the local tape library in a lock down state and use it for weekly full backup (i.e overwriting tapes) and do the incremental back at the central site. This means that each NetBackup client needs to talk to a Master and Media Server for the Full backup and then talk to another Master/Media Server for incremental backup over the WAN. Can a NetBackup client configured to talk ot multiple Master server? IF so, what is the way to configure it?
My Branch servers are all Win2003 Servers and have medium speed WAN link. Any insight to the proposed solution would be much appreciated. I exhuasted seraching NetBackup documentation and I could not find an answer (yes/No) to my question. I hope Fourm members can anser to my question based on their experience. Thanks
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