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Re: [Networker] Disk-based backups
2007-11-14 13:30:02
On 11/14/07 1:09 PM, Paul Steele wrote:
Our backups are taking longer and longer so we're interesting in finding
ways to improve things.
If the problem is in getting the data from the clients to networker,
then going to disk first (whether it is traditional disk or a VTL) isn't
going to get you a lot of speed improvement. It will save your real
tape drives a lot of shoe-shining though -- because staging (assuming no
network traffic) is going to be a lot faster.
I use a mix of things here. I have some data-domain de-duplicating disk
(which we never stage) and some traditional disk that we have configured
to let networker stage (at this point). So far, it has worked well for
us. We have definitely seen our backups speed up as the bottle neck
moved from the old AIT-3 tape drives to the network connection. What
our customers have noticed is the restores from disk are amazingly fast.
I'm currently working toward a disk pool that is large enough to hold
our weekend fulls. So, we can clone from the disk to tape and then
stage it to tape to clear off the disk pool for the next weekend's set
of fulls -- we're currently discussing whether to use more traditional
disk or jump into the VTL arena and get rid of AFTD's (other than the
Data Domain devices) entirely.
--
Frank Swasey | http://www.uvm.edu/~fcs
Sr Systems Administrator | Always remember: You are UNIQUE,
University of Vermont | just like everyone else.
"I am not young enough to know everything." - Oscar Wilde (1854-1900)
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