ADSM-L

Re: Tape mount time.

1996-12-30 04:40:58
Subject: Re: Tape mount time.
From: Francis Dequenne <syf AT ECMWF DOT INT>
Date: Mon, 30 Dec 1996 09:40:58 +0000
Wayne,

In our experience, a tape mount normally takes around 30 seconds, provided that
1) There is no concurrent activity in the robot,
2) THERE IS A FREE DRIVE!

Is it possible that your drives are locked by tapes used by other sessions or
processes, or that tapes are left idle in drives for the period specified by
mountretention?  (use q mount to check this). If the later is true, reduce the
value of mountretention to lower values (e.g. 1 or 2 minutes).

I Hope this helps.

On Dec 29, 11:41pm, Wayne Gorton wrote:
<=> Subject: Tape mount time.
<=>From:  Wayne Gorton or wgorton AT vnet.ibm DOT com or clown AT ibm DOT net
<=>"                   or AUIBMGOD at IBMMAIL
<=>"      Cumberland Forest. Aust   Ph:(02) 354 7599  Fax:(02) 3547766
<=>Subject: Tape mount time.
<=>Howdy everyone,
<=>I have a 3494 with 2 3590's & about 132 tapes. I was wondering how long it
<=>should take to mount a tape. On the adsm console a tape mount takes 11
minutes.
<=>The lmcp thinks it takes an average of 27 seconds.
<=>Why the difference? What does ADSM have to do before it issues a tape mount?
<=>Does anyone else have similar sort of times for tape mounts?
<=>This 11 minutes is separate from ADSM setting up the library (this takes
<=>about 45 minutes, but is only done once, after ADSM is bought up).
<=>Ok the version info:- AIX   4.1.4
<=>                      ADSM  2.1.5.10
<=>                      Atape 2.5.2.1
<=>                      Atl   2.5.10
<=>
<=>                       Bye
<=>            Wayne G   Unix Sys Admin
<=>"           The Thinking Man's Clown
<=> "Imagination is more important than knowledge" Albert Einstein
<=> End of excerpt from Wayne Gorton



--
Regards
Regards

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