On 9/4/08 1:59 PM, Curtis Preston wrote:
Recently there was some discussion about VTLs and cloning. In that
discussion, a number of people seemed pretty happy with their cloning
performance/speed. This conflicted with what I usually hear, that
cloning was slow and inefficient - and that's NOT just on NetWorker.
What kinds of speeds are you getting with YOUR clones, and what are you
cloning from and to?
I am cloning from fibre attached Nexsan SATABeast to fibre attached
LTO-4 tape drive. Both attached to the same storage node (RHEL 4,
Qlogic 4Gb HBAs) and I see speeds that show the tape drive is rolling
full speed (120+ MB/second) as reported by the Monitor->Devices tab in NMC.
I have written my own scripts, so I do not have SATABeast controller
contention (one clone per controller at a time) during the cloning process.
I'd REALLY like to hear about anyone cloning to LTO-3, LTO-4, or devices
of similar speeds, especially if you're cloning from disk to tape.
________________________________________________________
Curtis Preston | VP Data Protection
GlassHouse Technologies, Inc.
T: +1 760 710 2004 | C: +1 760 419 5838 | F: +1 760 710 2009
cpreston AT glasshouse DOT com | www.glasshouse.com
<http://www.glasshouse.com/>
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