"for pure speed, today's tape drives are streets ahead. "
I'll certainly debate that! In our lab, I see NetWorker sustain
backup-to-disk data rates to storage arrays that exceed all of the tape
devices (uncompressed) listed in
http://www.storagemountain.com/hardware-drives.html. And this is with 4+1
and 8+1 RAID-5 LUNs - nothing fancy, standard stuff. Sure, today's tape
devices are faster than many single spindle disks (no RAID) or older storage
arrays. But tape is not faster, head to head, that a storage array LUN.
And, in the future, you can use that same storage array to perform a backup
via a replica (snapshot, clone, mirror), which can save terabytes in seconds
- something a tape drive will never be able to do.
tl
Terry Lemons
> CLARiiON Applications Integration Engineering
EMC²
where information lives
4400 Computer Drive, MS D239
Westboro MA 01580
Phone: 508 898 7312
Email: Lemons_Terry AT emc DOT com
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