On Oct 4, 2007, at 9:13 AM, Teresa Biehler wrote:
Hi,
What great timing for this to come up. We've been discussing
automated
cleaning in our environment. We've noticed that when we clean
frequently (whenever the drive "cleaning needed" light comes on) we
have
fewer "tape read" issues. So, rather than obsessively watching for
the
light, we'd like to automate this process, but are unsure of how often
we should clean the drives? How often are you cleaning your drives?
Did you do any sort of analysis to select this interval? Is your
cleaning automated or do you do it manually? If manual, what
issues did
you have when using the automated cleaning interval (set in device
definition)?
Our environment:
- 10 AIT3 drives in ADIC Sc10k
- backing up about 17TB a week
- NW server is Solaris and running NW v7.2.2
Why not try turning on your library's automated tape cleaning feature
and see how that works out for you? If you get contention problems
with NetWorker trying to use a tape drive that's being cleaned, then
try turning off the library's cleaning feature and enable it on your
NetWorker server's tape library resource, then set up each individual
tape drive for daily cleaning. Put "1 day" in the cleaning interval.
Try also using the CDI feature on each drive and if that doesn't work
for you, try disabling it. By enabling CDI, you tell NetWorker to
clean each drive when it signals that it needs to be cleaned, but
your tape drives need to support that feature. You might also contact
ADIC (or is it Quantum now?) to see what they recommend.
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