Veritas-bu

[Veritas-bu] Tape Alert automated cleaning not working

2001-02-14 16:47:11
Subject: [Veritas-bu] Tape Alert automated cleaning not working
From: f@b fabrice.brochart AT wanadoo DOT fr
Date: Wed, 14 Feb 2001 22:47:11 +0100
        Hi ,

Sorry for this question ,

But what is the goal of using "autoclean" feature and TapeAlert ??

You have to use one of them , but not twice.

And correct me if I'm wrong , but the elapse time of cleaning a DLT drive
,when a cleaning cartdrige is about it's 20 limits, is more than 10 minutes
?

The timeout is just a limit to waiting for, but in anyway you have to wait
the maximum time for every mounts requests.

How Netbackup can underline "drive error" from a "tape error" ??

Thanks for reply.

Fabrice

-----Message d'origine-----
De : veritas-bu-admin AT Eng.Auburn DOT EDU
[mailto:veritas-bu-admin AT Eng.Auburn DOT EDU]De la part de Andrew Shinkarev
Envoye : mercredi 14 fevrier 2001 15:26
A : Veritas-bu AT mailman.eng.auburn DOT edu
Objet : Re: [Veritas-bu] Tape Alert automated cleaning not working


On Tue, Feb 13, 2001 at 12:39:46PM -0700, Dale, Daniel P wrote:

Dan,

Thank you very much for your info.
We brought up the issue to Veritas and are waiting
for a response.


Thanks,
Andrew
> I have looked into this issue from within StorageTek's
> incident database. This problem was reported to us by Sun
> and some of our own customers. One of our Lab's was used to
> recreate the failure with a SCSI analyzer attached to the L700.
> In the lab, when a cleaning cartridge was mounted on a drive and
> a data cartridge mount was requested to the same drive the L700
> returned the correct 2h 30h 03 response. It is my belief that the
> status 5h 3Ah 00h you see in the Netbackup log, when the drive is
> downed, is coming from an attempt of Netbackup to eject the cleaning
> cartridge after the L700 presents the Not Ready/Cleaning cartidge
> installed status. Look at the text of the message. It is a move
> medium error, of the cleaning cartridge, from the drive to the outport.
>
> Veritas's position on this is that they do not support robot controlled
> drive cleaning. This is very clearly stated in a Tech Tip available on
> their support web page. Keyword 'TapeAlert'. This was also their response
> to StorageTek when we contacted them about this issue. I cannot say
> whether Veritas is working on supporting this in the future or not.
>
> It is my suggestion that if TapeAlert is not working as you think it
> should, that you open an incident with Veritas and with the Vendor who
> supports your tape drive. Since both the hardware and software have to
> work together for TapeAlert to function and from what I've seen it is
> unclear why some drives get cleaned and not others. I know this places
> a burden on you but it is the best way to get this problem addressed.
>
> StorageTek recommends, if using frequency based cleaning, to set it to
> 100hrs for DLT7000's. With the caveat that this may not be right for
> everyone.
>
> If you are using the Robot controlled cleaning on the L700 I recommend
> having
> your maintenance provider install 2.2 level code. There is a fix which
> addresses drive cleaning reliability. I do not know if Sun has made this
> available for their branded L700's.
>
> I have heard, as a work around, that some customers have (probably from an
> SSO
> environment) left Robot controlled cleaning enabled and created a script
> which
> parses the Netbackup log looking for the error text you described. The
> script
> then ups the downed drive. I'm not neccessarily endorsing this but I would
> like
> to know if anyone on this list has tried it and whether it worked or not.
>
> Thanks,
> Dan Dale
> System Specialist
> StorageTek
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