Re: [Veritas-bu] D2D or Tape Libraries
2010-10-08 02:05:25
Hi Rusty
Just how much Disk Space do you have available? Are we talking
5TB+ here? or More like 40TB+ of space you have?
Simon
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 Think before you print CONFIDENTIALITY: This e-mail (including any attachments) may
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"WEAVER, Simon (external)"
<simon.weaver AT astrium.eads DOT net> Sent by:
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10/07/2010 05:45 AM
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Subject
| [Veritas-bu] D2D or Tape
Libraries |
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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
Re: [Veritas-bu] D2D or Tape Libraries, Brian J. Greenberg
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