If you PRINT DEVCTRL.MPEXL.TELESUP, you get the following in the beginning
of the 74 line printout:

PUB.SYSrint devctrl.mpexl.telesup
parm Dev, Compression="Nochange", Eject="Nochange", Load="Nochange"
Comment **************************************************
Comment
Comment Devctrl (Device Control Command)
Comment
Comment Parameter List:
Comment
Comment LDev - Logical Device Number (Required)
Comment
Comment Compress - [Enable | Disable | Nochange]
Comment
Comment Eject - [Enable | Disable | Nochange]
Comment
Comment Load - [Online | Offline | Nochange]
Comment
Comment **************************************************


************************************************** *************
CDR Paul Edwards USNR Ret. HP 3000 Certified Consultant
Paul Edwards & Associates
1506 Estates Way Phone: (972) 242-6660
Carrollton TX 75006 Cel : (214) 384-8728
Email: pedwards@gte.net Web : www.peassoc.com
************************************************** *************
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:HP3000-L@RAVEN.UTC.EDU] On Behalf
Of mag
Sent: Wednesday, October 31, 2007 1:18 PM
To: HP3000-L@RAVEN.UTC.EDU
Subject: [HP3000-L] devctrl parameters question

hi again,

I think I need some help on understanding the parameters for the devctrl
statement I have in a job stream for a backup job we run nightly. I see
that
the parms are for 'compression','eject' and 'load', right? In my job, I
have this
statement:

" !devctrl.mpexl.telesup 7,nochange,enable "

Does this mean that there's no compression and eject is enabled? The 3rd
command is not there. We noticed that when this job is completed, the green

light is not on the drive. Is that because we don't have the 3rd
parameter "online" ? I've never dealt with this before and was wondering
what
you think. It's a matter of me not understanding the parameters.

thanks!

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On Oct 31, 1:17 pm, mag wrote:

> " !devctrl.mpexl.telesup 7,nochange,enable "
>
> Does this mean that there's no compression and eject is enabled? The 3rd
> command is not there. We noticed that when this job is completed, the green
> light is not on the drive. Is that because we don't have the 3rd
> parameter "online" ? I've never dealt with this before and was wondering what
> you think. It's a matter of me not understanding the parameters.

Short answer. No. Compression remains in what ever state it was in
before. And you were right, EJECT is enabled.

The online parameter is to place an offline tape back online.

Here is some more info...


If you enter...
:devctrl.mpexl.telesup 7
Device = 7, Compression=Nochange, Eject=Nochange, Load=Nochange

but if you enter..
devctrl.mpexl.telesup 7 help

America12 SYS, TEMP:devctrl.mpexl.telesup 7 help

******************* DEVCTRL SYNTAX ERROR ***********************

Usage Syntax:
DEVCTRL LDev COMPRESSION=Compress EJECT=Eject LOAD=Load where
LDev - Logical Device Number (Required)
Compress - [Enable | Disable | Nochange]
Eject - [Enable | Disable | Nochange]
Load - [Online | Offline | Nochange]

******************* DEVCTRL SYNTAX ERROR ***********************

It is clearer.

Compress - Now some tape drive have internal hardware compression
(Most DDS (aka DAT) tapes do.) This is usually good to enable

Eject - This is talking about the status of the tape after it
completes writing.

Load - This can be used to place a tape back online. (Assuming it
hasn't been ejected)


Here is one of my command files:

:help loadtap7
USER DEFINED COMMAND FILE: LOADTAP7.CMD.SYS

DEVCTRL.MPEXL.TELESUP DEV=7 LOAD=ONLINE COMPRESSion=enable


Mark Ranft
Pro 3K