/dev/rmt devices in Solaris are built in the order the targets and luns are
listed in /kernel/drv/st.conf. So, SCSI attached, if you make the tape
drive that is first in the robot target 0, and go with the defaults in
st.conf, it will be /dev/rmt/0, which you can correspond to Drive0 or Drive1
or whatever you like to name it in NetBackup.
If you've got a SAN, use persistent binding (preferably portID binding to
WWNN or WWPN binding) to ensure your tape drives appear as they targets they
should. If your tape drives in the SAN are behind a bridge, you can make
the bridge the proper target through binding, and then inside the bridge you
can adjust the lun number each tape will receive to still ensure you
maintain the proper order.
Thanks,
Gregg Yurchak
VERITAS Professional Services
Biloxi, MS
Cell: 228.324.6939
Office: 228.575.6299
-----Original Message-----
From: Prasad Chalikonda [mailto:prasadchalikonda AT yahoo DOT com]
Sent: Saturday, November 17, 2001 4:48 PM
To: veritas-bu
Subject: [Veritas-bu] Ensuring drives are mapped correctly in a SAN env.
Is there a recommended procedure to ensure drives in a Unix env. with
SSO are mapped correctly?
Let's say my Library has 10 drives, and the device files on my Master go
from 0cbn to 9cbn.
My strategy is:
1. Manually load a tape in to each drive in the Library.
2. From the server, do an "mt -f /dev/rmt/0cbn offline", and note
the drive# the tape is ejected from.
3. Let's say it was Drive 1 in the Library. Drives in the Library for
NBU go from 1 on up, right? In NBU Drive Configuration, I make sure when
I type the device file as "/dev/rmt/0cbn", the drive is "Drive 1".
4. Repeat step 2 for each drive and note down correspong the Drive #
which ejects the tape.
Is this a good and sufficient test to ensure everything will work
properly? Does anyone have a better way of doing this?
Thanks very much.
Prasad.
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