Veritas-bu

Re: [Veritas-bu] sso question

2007-10-09 11:27:57
Subject: Re: [Veritas-bu] sso question
From: "Nick Majeran" <nmajeran AT gmail DOT com>
To: veritas-bu AT mailman.eng.auburn DOT edu
Date: Tue, 9 Oct 2007 10:12:30 -0500
You can load tapes from the master because it has the robot control
and just loads the tape into a position in the library.  You can't
unload them, because the master server can't send the mt commands to
the tape drive to unload the tape that the robot can then grab.

Unless you know that you can feed 3 LTO-3 @ 80 MB/s per HBA, I don't
think a little over- subscription is going to kill you.

-- nick


guys i have master server running sol8 connected to L700.

L700 has 7 drives in it.

Master can see 6 of them through fiber

Med1 can see first 3 drives shared
Med2 can see first 3 drives shared

Med3 just added has access to drives 5,6,7 and can see them fine.

I have just loaded a tape on the master server ( robot control ) and put
a taper into drive 7. When i came to do an unload d7 so i could move the
tape back (m d7 s6) it wouldn't do it. I then realized thats because it
does unloads on rmt paths and i haven't added drive 7 to the master server.

Didnt add for 2 reasons. 1. its recommended to have only 3 drives per
2gb HBA ( which is why it has 6 drives in total ). Plus if i added drive
7 i would need another shared license i guess.

Question:- Is there something wrong with my setup then. Should the
master have device paths set up for every drive in the robot. I know it
can put tapes in but it cant take them out. What i was able to do was a
mt -f /dev/rmt/2 offline from Med3 and then moved it using robtest from
the master.
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