At 5:20 PM -0800 1/29/07, Mr. Daniel Browne wrote:
Hi All,
I'm researching options for improving the backup scheme for
our Xsan. At 7TB, we're just at the limit of what is practical with
a firewire-based DDT scheme and want to move to a fully tape-based
scheme. Does anyone have a good rule of thumb for how many backup
cycles you can put LTO-3 tapes through before replacing them?
Good backup sw should tell you when a tape need replaced based on its
history and errors.
Tape wear is based on too many things for the data from one site to
be relevant to another. For instance start/stop being the killer, if
your data can't stream or your blocking is too low then you may wear
tapes sooner than the person coping one large contiguous file all the
time as part of their backups.
--
-dhan
------------------------------------------------------------------------
Dan Shoop AIM: iWiring
Systems & Networks Architect http://www.ustsvs.com/
email@hidden http://www.iwiring.net/
1-714-363-1174
"The wise man doesn't give the right answers, he poses the right
questions." -- Claude Levi-Strauss
iWiring provides systems and networks support for Mac OS X, unix, and
Open Source application technologies at affordable rates.
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