Veritas-bu

Re: [Veritas-bu] D2D or Tape Libraries

2010-10-07 08:26:30
Subject: Re: [Veritas-bu] D2D or Tape Libraries
From: "Lightner, Jeff" <jlightner AT water DOT com>
To: "WEAVER, Simon \(external\)" <simon.weaver AT astrium.eads DOT net>, <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Thu, 7 Oct 2010 08:21:33 -0400

D2D might require a lot more storage than you estimate.   Think of how often you buy new tapes.

 

However, that can be mitigated with dedupe solutions like Data Domain.   Also Data Domain offers syncing to an offsite unit of the same type.  Also the big disk array manufacturers due have things that allow you to sync from one array to another.   (However, this is typically a one off kind of thing – the next sync overwrites the previous one.)   You’d have to pay the offsite vendor for floor space, networking and power though.   Haven’t priced that myself but suspect it wouldn’t be cheaper than tapes.   Also with “permanent” storage on disk as opposed to tape you always take the risk that the remote storage might die and kill all your backups.   Tapes can degrade but you are far less likely to lose all your offsite tapes at one fell swoop.

 


From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of WEAVER, Simon (external)
Sent: Thursday, October 07, 2010 6:45 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] D2D or Tape Libraries

 

All
Just wanted some views on this....

Been using Tape backups + Robots for years, and only lately things have been going wrong!
Decisions seem to be made about removing tape backups (maybe using them for monthly) and going to D2D solutions only.

Anyone got views on this? Pros or cons?

I do not mind D2D but I also like the "feel" of Tapes and storing them outside a site in a secure safe! Cannot do that with a EVA System !

Note: D2D is not to go to tape, remains on disk until it expires.

Regards

Simon

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