Ok, I'm missing something. I've read through the information in the
Admin Guide about enabling CDI. It's enabled for our drives (its set to
SCSI commands) and our cleaning interval is currently set. I believe
that I'll need to eliminate the cleaning interval to get cleaning to
happen when CDI triggers it - right? Is there more to it?
Also, when I look through the daemon.log and messages file, I see lots
of TapeAlert messages saying that a cleaning event has been cleared.
There is no correspondence between these messages and when cleaning
actually occurred. So, what's going on? Anyone have any ideas?
Thanks.
Teresa
-----Original Message-----
From: Davina Treiber [mailto:Davina.Treiber AT PeeVRo.co DOT uk]
Sent: Friday, October 05, 2007 11:05 AM
To: EMC NetWorker discussion; Teresa Biehler
Subject: Re: [Networker] Cleaning frequency - was HELP!! Getting error
"Tape positioning by record is disabled"
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
You should be able to set your library to clean on demand, or set
NetWorker to clean on demand based on CDI signals. This is the optimum
way to clean - i.e. immediately the light comes on, not sooner and not
later. For most tape technologies periodic cleaning is not recommended.
To sign off this list, send email to listserv AT listserv.temple DOT edu and
type "signoff networker" in the body of the email. Please write to
networker-request AT listserv.temple DOT edu if you have any problems with this
list. You can access the archives at
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
|
