Re: [Veritas-bu] D2D or Tape Libraries
2010-10-07 11:28:23
We have several D2D2T system currently,
running Advanced Disk and SLPs. I would never go back if I had the choice.
There's nothing wrong with disk, in fact it cures many of the ills of a
tape system, like slow backups which kill tape drives, speed to restore,
etc. Even with dedupe, tape is still cheaper (I don't have numbers to prove
this, but disk isn't cheap and neither is a dedupe system or the power
to run it). If you design it right, it should work well. I would recommend
making a second copy on tape because it's cheap and your a$$ will be saved
when/if there's a problem with the disk array. To save some money, you
could design it so that all of your images are on disk for the first week
as this is when most restores occur. Keeping ALL imags on disk and not
tape, and not deduping, is going to be expensive.
Remember, the more times you handle
a tape and take it out of the climate controlled space of the data center,
your probability for issues rises. There was someone who made a presentation
at the NBU customer forum who went to a mostly disk solution, but still
had tape though tapes never left the library. They had one media error
in a year. Now THAT would be nice to have in any environment!
As many people have been saying for
years, tape is not dead - it still has it's place.
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
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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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- [Veritas-bu] D2D or Tape Libraries, WEAVER, Simon (external)
- Re: [Veritas-bu] D2D or Tape Libraries, Lightner, Jeff
- Re: [Veritas-bu] D2D or Tape Libraries, Wayne T Smith
- Re: [Veritas-bu] D2D or Tape Libraries, William Brown
- Re: [Veritas-bu] D2D or Tape Libraries,
Rusty.Major <=
- Re: [Veritas-bu] D2D or Tape Libraries, WEAVER, Simon (external)
- Re: [Veritas-bu] D2D or Tape Libraries, Rusty.Major
- Re: [Veritas-bu] D2D or Tape Libraries, Wayne T Smith
- Re: [Veritas-bu] D2D or Tape Libraries, judy_hinchcliffe
- Re: [Veritas-bu] D2D or Tape Libraries, WEAVER, Simon (external)
- Re: [Veritas-bu] D2D or Tape Libraries, Lightner, Jeff
- Re: [Veritas-bu] D2D or Tape Libraries, WEAVER, Simon (external)
- Re: [Veritas-bu] D2D or Tape Libraries, Rusty.Major
- Re: [Veritas-bu] D2D or Tape Libraries, WEAVER, Simon (external)
- Re: [Veritas-bu] D2D or Tape Libraries, Rusty.Major
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