Re: [Veritas-bu] D2D or Tape Libraries

I would recommend D2D2T for the backups that really matter. You can improve the speed of writing and the fill % of the media to cut cost. But if you drop and break a tape you lose one day of some backups. If you corrupt your disk you likely lose all your backups of everything. If your luck is in you can replicate that corruption to your second copy.

Now you might well not keep all backups on tape – maybe production servers only, maybe not many copies, maybe not all the incrementals.

Also, any long retention you want to avoid power costs – tape is cheap to store long term.

William D L Brown

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: 07 October 2010 11:45
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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