On Thu, Sep 06, 2001 at 08:09:49PM -0400, Larry Cadloff wrote:
Don't have any AIT tape drives around.... but looks like TapeAlert
doesn't work for you.
I would love to see if TapeAlert works for any combination.
Anywho????????
It means there is no good way, including manual, to clean tape drives in
SSO environment. I had ignored Cleaning Requests coming from
tape drives until got low speed and even failed backups and fast
growing number of frozen media. So, DLT is selfcleaned but it
must be cleaned at least sometime.
We had problems with Tape Alert feature on ours STK L700 and DLT7000.
Recently Veritas released a patch for automated tape drive cleaning initiated
by library, so TapeAlert doesn't work for DLT tape drives at least in
STK libraries.
Please check the patch description:
http://seer.support.veritas.com/docs/237385.htm
The following configuration was blessed by STK/Veritas:
NetBackup V 3.4 + 645 + NB_34_1
STK L700 with firmware level 2.30 and AutoClean feature ON
DLT tape drives with firmware 101.
And again it's AutoClean feature, not TapeAlert.
The patch was released 3 month ago, but I still can't test it
as soon as the patch should be applied to all environment.
> There's really no configuration to do. Once Netbackup knows that it has a
> cleaning tape in the library, it will automatically react to a Tapealert.
> The feature is permanently turned "on". If you also want to do scheduled
> cleaning, you can set it up using tpclean as you've already done; the two
> cleaning methods won't interfere with each other.
>
> As you pointed out, of course, not every library, drive, firmware revision,
> etc. fully supports Tapealert; most do, though. I don't know about your
> specific case.
>
> -- Larry Cadloff
> Senior Consultant, VERITAS Software
> (617)529-4433
>
>
> -----Original Message-----
> From: John_Wang AT enron DOT net [mailto:John_Wang AT enron DOT net]
> Sent: Thursday, September 06, 2001 4:47 PM
> To: larry.cadloff AT veritas DOT com
> Cc: Alex.Alonzo AT trw DOT com; veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: Tape Alert Setup
>
>
>
>
> Hello Larry
>
> Hmmm, I remember going through the manual for 3.4 very carefully before I
> set
> up the cleaning tapes at this site.
>
> There is a blurb on page 286 about TapeAlert that states that not all
> robots,
> drives and firmware levels support reactive cleanings but that if yours did
> you
> could do both frequency based and reactive cleanings. Never found out how.
> The blurb references a chart on page 276 that basically said "yes" for TL8,
> a
> lot of good that does.
>
> It's a feature that I wanted to turn on, tried very hard to find info on it
> in
> the manuals, but didn't find anything useful. Maybe you can tell me how to
> use
> TapeAlert, I've got an ADIC Scalar 1000 with Sony AIT2 drives.
>
> Regards,
> John I Wang
> Sr. Systems Engineer
> Steverson Information Professionals
>
> ---
> Enron Networks
> Enron Building room 3427e
> ph (713) 345-4888
> cell (832) 493-1263
> fax (713) 646-8462
> pg pagejwang AT skytel DOT com or 1-877-390-4155
>
>
>
>
>
> |--------+------------------------->
> | | larry.cadloff@v|
> | | eritas.com |
> | | |
> | | 09/06/01 02:55 |
> | | PM |
> | | |
> |--------+------------------------->
>
> >---------------------------------------------------------------------------
> |
> |
> |
> | To: veritas-bu AT mailman.eng.auburn DOT edu
> |
> | cc: Alex.Alonzo AT trw DOT com, John Wang/Contractor/Enron
> |
> | Communications@Enron Communications
> |
> | Subject: Re: Tape Alert Setup
> |
>
> >---------------------------------------------------------------------------
> |
>
>
>
> John's comment below isn't quite right... as Alexander implied, Netbackup
> (V3.2 and higher) is also capable of sensing a Tape Alert request from a
> drive. It's not just time based.
>
> John is correct when he says that Netbackup won't recognize a cleaning tape
> by default... you must first create a barcode rule that looks for the
> cleaning tape's barcode prefix (typically CLN); you must configure the rule
> to define tapes with this prefix as DLT cleaning tapes, and you should set
> an appropriate maximum number of cleanings (always 20 for DLT cleaning
> cartridges, as far as I know). There is no additional configuration needed.
> If the drive supports Tape Alert, and Netbackup knows that it has a cleaning
> tape available, it will automatically initiate a cleaning cycle when the
> drive signals that it needs one. You don't need to use tpclean to make this
> happen.
>
> -- Larry Cadloff
> Senior Consultant, VERITAS Software
> (617)529-4433
>
>
> -----Original Message-----
> From: John_Wang AT enron DOT net
> To: Alex.Alonzo AT trw DOT com
> cc: veritas-bu AT mailman.eng.auburn DOT edu
> Date: Thu, 6 Sep 2001 10:10:35 -0500
> Subject: Re: [Veritas-bu] Tape Alert Setup
>
>
>
> Hello Alexander
>
> Netbackup's cleaning algorithm is strictly time based i.e.: it keeps track
> of
> how many hours a given drive is in use and once it reaches a certain value,
> the
> cleaning tape is run through it. Many robots have the ability to sense
> when a
> drive requests cleaning and therefore minimize your cleaning cycles to the
> absolute minimum number of cycles needed, these have little wires plugged
> into
> the jumpers on the back of the tape drive.
>
> --snip--
>
> |--------+----------------------->
> | | Alex.Alonzo@t|
> | | rw.com |
> | | |
> | | 09/05/01 |
> | | 04:25 PM |
> | | |
> |--------+----------------------->
>
> >---------------------------------------------------------------------------
> |
> |
> |
> | To: veritas-bu AT mailman.eng.auburn DOT edu
> |
> | cc: (bcc: John Wang/Contractor/Enron Communications)
> |
> | Subject: [Veritas-bu] Tape Alert Setup
> |
>
> >---------------------------------------------------------------------------
> |
>
>
>
> NB Users:
> Can anyone explain the steps I need to do to enable Tape Alert on our NB 3.4
> setup, we currently have the STK 9710
> robot doing the cleaning and we change the tape after 20 cleanings. All I
> know I
> must shutoff the robot cleaning, add a
> cleaning tape with a CLN bar code to robot & inventory it.
> What else and is there and is there a correct sequence ?
>
> Alexander Alonzo
> E-Enterprise
> TRW Space & Electronics Group
>
> *? alex.alonzo AT trw DOT com
> * 310.814.6097
>
>
>
>
>
>
>
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----
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