[ale] Recommendation for off-line storage?

[Jerry Yu]

For really repetitive data like traffic data for cell phone (airsage.com),
compression should do wonder, if CPU cycles are not at premium.

On 5/10/06, Denny Chambers <dchambers at bugfixer.net> wrote:
>
> 800 GB, if all of your date can be compressed in half. Also you have to
> take into consideration the price of the tapes as well. The 400 GB tapes
> are about $95 to $100 a piece.
>
> Greg Freemyer wrote:
>
> >On 5/10/06, Allan Metts <ametts2 at mindspring.com> wrote:
> >
> >
> >>At 03:48 PM 5/10/2006, Greg Freemyer wrote:
> >>
> >>
> >>
> >>>If so, there is NO data or gaurentee on disk drives maintaining data
> >>>with power off.
> >>>
> >>>We do it a lot around here, but we also make a tape backup before we
> >>>put the drives on the shelf.
> >>>
> >>>
> >>Well that certainly changes the equation.  I was indeed planning to
> leave these drives on the shelf.
> >>
> >>I was planning to make two copies before deleting the on-line data -- so
> maybe I need to send one copy to tape (for long-term retention), and one to
> disk (for less-reliable retention, but easy searching and restoration).
> >>
> >>So now I'm looking for a tape-based solution too?  Same parameters
> apply, I suppose:  Linux-friendly, non-proprietary, rack-mountable, minimal
> hassle.
> >>
> >>Although the last time I dealt with tape drives, the tapes were only
> 20-40 GB.  I have 400 GB and the data center is a remote facility.  Now I'm
> talking a tape carousel?  Am I going about this all wrong?  Should just make
> two copies on IDE drives, take them off-line, and hope for the best?
> >>
> >>A----
> >>
> >>
> >
> >An LTO-3 can hold your data (800GB with compression) on one tape.  LTO
> >is the market leader for enterprise class tape drives.
> >
> >See
> http://www.quantum.com/Products/TapeDrives/LTOUltrium/LTO-3/Index.aspx
> >
> >The trouble is they are expensive.  I haven't priced one recently, but
> >I wuold guess $5-10K per drive.
> >
> >Got curious and found at least one site selling them for around $4K.
> >I'm actually surprised there that cheap.  I bought a couple of LTO-1's
> >about 3 years ago for $5K each and they were used!!
> >
> >Greg
> >--
> >Greg Freemyer
> >The Norcross Group
> >Forensics for the 21st Century
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> >
> >
> >
> >
>
>
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