>> o Networker appears to require that I specify the library slots
>> associated with the cleaning tapes. Does networker care about the
>> labels on those tapes? We don't currently have "CLNxxxx" labels,
>> and want to make sure that's ok.
>
>In my experience, NetWorker doesn't care about the labels on cleaning
>tapes. Your tape library might care, even with its auto-cleaning
>feature disabled.
Stan is right on both counts. NetWorker doesn't care and cleaning will work
fine with unlabeled tapes. But according to Quantum, who now owns ADIC, the
i500 doesn't distinguish between an unlabeled tape and an empty slot. So
even with NetWorker cleaning you'll need those CLNxxx labels.
Conrad Macina
Pfizer, Inc.
On Wed, 18 Jul 2007 09:12:06 -0400, Stan Horwitz <stan AT TEMPLE DOT EDU> wrote:
>On Jul 18, 2007, at 8:18 AM, Paul Robertson wrote:
>
>> We did open a support call with EMC, and they suggested we needed
>> to enable
>> CDI; unfortunately, we had huge problems with CDI in the past (we
>> couldn't
>> read our tapes due to blocksize errors), so we're more than a
>> little gunshy.
>>
>> We've decided to disable library-based autocleaning as well, and use
>> Networker periodic cleaning. I do have a couple of questions after
>> reading the documentation:
>>
>> o Networker appears to require that I specify the library slots
>> associated with the cleaning tapes. Does networker care about the
>> labels on those tapes? We don't currently have "CLNxxxx" labels,
>> and want to make sure that's ok.
>
>In my experience, NetWorker doesn't care about the labels on cleaning
>tapes. Your tape library might care, even with its auto-cleaning
>feature disabled.
>
>> o Since our tape drives are shared between the Networker server and a
>> storage node, I'm wondering about how to define the cleaning
>> frequency for the drive to avoid conflicts. For example, a single
>> tape drive has device definitions /dev/rmt/2cbn as well as
>> rd=racnyc03:/dev/rmt/2cbn. How would I configure networker assuming
>> that I want to clean the tape drive once a month? I would assume
>> that
>> I would define periodic cleaning just one of the two device
>> definitions
>> (e.g. /dev/rmt/2cbn), but wanted to check.
>
>If all the tape drives are shared, you can probably get away with
>just allowing one storage node to handle tape drive cleaning. I don't
>have any shared tape libraries in my environment; however, I do have
>each device set up to check for cleaning once a day. This is just a
>check; if NetWorker checks and a device does not need cleaning,
>NetWorker won't load a cleaning tape into that drive, so I figured I
>might as well just have NetWorker check daily. This with NetWorker
>7.2.1 server under Solaris 9. I imagine later versions handle tape
>cleaning the same way.
>
>--
>Stan Horwitz
>Temple University
>Enterprise Systems Group
>stan AT temple DOT edu
>
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