Just a quick response to one of the earlier posts regarding LSU’s and multi-domain NBU environments.  OST and Data Domain does support deployment into NBU environments where there is more than one Netbackup domain.

 

The OST admin guide states that you should only have one LSU (Logical storage unit) per Netbackup Domain but that each data Domain appliance can have up to 100 LSU’s which would in theory support up to 100 Netbackup domains.  It does say that multiple LSU’s can cause issues with some of the advanced Netbackup features such as media server load balancing but it is a recommended best practice when deploying into multi-domain netbackup environments.

 

http://www.emc.com/collateral/software/white-papers/h7296-data-domain-boost-openstorage-wp.pdf

 

Thanks,

 

Mark Glazerman

Desk: 314-889-8282

Cell: 618-520-3401

P please don't print this e-mail unless you really need to

 

 

I wouldn't recommend a VTL with NBU at all as NBU works extremely well using Disk Pools/Disk Staging Storage Units. Making your disk look like a bunch of tape drives just adds more management and complexity and defeats the purpose of disk, IMO. On a side note, because SLPs and OST work together to get the replication completed, you will not need the replication option licensed on the DD.

It is very easy to setup both the DD and NBU to utilize the DD and get images replicating. Plan on waiting a while for the first images to replicate if you have a small link. I made a mistake setting up my first DD Storage Server w/in NBU and used the IP address as the name of the Storage Server. The Storage Server name is tied to the Disk Pool, which is tied to the SLP, which is tied to the images, so it caused a situation where I had to wait for the old images to be cleaned up before I could remove it.

Something to think about is what you are going to do with the images on the remote DD once they are on the other side. Just having the images on a DD at a remote location is only part of the way to being able to do any recovery.

Rusty Major, MCSE, BCFP, VCS ▪ Sr. Storage Engineer ▪ SunGard Availability Services ▪ 757 N. Eldridge Suite 200, Houston TX 77079 ▪ 281-584-4693
Keeping People and Information Connected® ▪ http://availability.sungard.com/
P Think before you print
CONFIDENTIALITY:  This e-mail (including any attachments) may contain confidential, proprietary and privileged information, and unauthorized disclosure or use is prohibited.  If you received this e-mail in error, please notify the sender and delete this e-mail from your system.

sandesh <nbu-forum AT backupcentral DOT com> Sent by: <veritas-bu-bounces AT mailman.eng.auburn DOT edu> 04/14/2011 10:03 AM Please respond to <VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU>

To <VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU> cc Subject [Veritas-bu]  EMC Data Domain OST Vs VTL with NetBackup

We are in the early stages of implementing EMC Data Domain dedupe appliance and use Symantec NetBackup. I've a couple of questions about it for the experts.

Plan is to have a DD appliance in 1 location and replicate data to another DD appliance in another location. Plan is also to generate a tape copy for long term archival at primary location.

1.OST & VTL are both being discussed. Which option is most favorable in the industry? Are there any specific advantages that can make or break things?
2.VTL supports LTO3 drives at the most. Does this mean that we need to have LTO3 physical tape drives for duplicate copy or will LTO5 drives work?

Thanks in advance.

+----------------------------------------------------------------------
|This was sent by sandesh.nbu AT gmail DOT com via Backup Central.
|Forward SPAM to abuse AT backupcentral DOT com.
+----------------------------------------------------------------------


_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu