The restriction we found when we looked into this in 2008 was that the DD only supported one 'LSU'. That meant that a single DD appliance could only be used by a single NetBackup domain. We wanted to have few appliances and many domains, which PureDisk (and now the Symantec NetBackup 5000) can do.
I know that the number of LSUs supported has gone up, but I believe that there is still more of a concept of the DD 'belonging' to a domain than with PureDisk. Your EMC SE will be able to correct anything I say that is now wrong! I have to admit that we've adopted neither and still backup to LTO tape. That was more because of the difficulty in creating a cost saving to pay for the hardware than any technical deficiency of either. Another factor I think is that with OST the NetBackup domain knows about the duplicates. With VTL I believe, and certainly if using the DD as a NAS BasicDisk and letting it manage its own replication, NetBackup has no idea that the replicas exist. I'd suggest you check but it may be that if you duplicate a VTC you get 2 with the same 'barcode'. I would advise using OST. I also think DD have invested a lot more effort in the non-VTL features over the past few years. William D L Brown Ext Tel: +44 1438 766162 Fax +44 1438 312767 -----Original Message----- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: 14 April 2011 15:38 To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU 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....@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +---------------------------------------------------------------------- _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu This e-mail was sent by GlaxoSmithKline Services Unlimited (registered in England and Wales No. 1047315), which is a member of the GlaxoSmithKline group of companies. The registered address of GlaxoSmithKline Services Unlimited is 980 Great West Road, Brentford, Middlesex TW8 9GS. _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
