You have to enable persistent binding. The method varies according to
the hardware manufacture but you must do it on the HBA and the FC bridge
of the tape library.

Thanks,

Dana
-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Gaddy
Sent: Wednesday, September 06, 2006 6:08 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: NetWorker + Windows SAN Tapes

Hi all,

this is a little bit OffTopic, but hurts us at least twice a month ...

We have some "Dedicated Storage Nodes", which share fibre attached
LTO drives in an 3-frame IBM3584.
Switches\Directors are McData, HBAs different types of Emulex cards.
All tape drives (WWPNs) are bound to SCSI addresses using elxcfg / 
HBAnywhere.

If, for some reason (defect), we power off a tape drive,
some of the Storage Nodes (esp. Windows2003)
readdresses the devices "on the fly", e.g. \\.\Tape3 will become
\\.\Tape2
(SCSI adresses do not change, because they are bound as described
above).

Unfortunately NetWorker is not very happy with this behavior!
( I think, many of you can imagine that, can't you? )

So my questions are:

a) Can I stop Windows2003 from changing the logical device addresses?
   
b) If I cannot, can I rearange the addresses ONLINE without
   rebooting the server (which is typical a large SAP+Oracle in
production)

Any tips and hints are welcomed very much.

Thanks -sg-
--
Steffen Gattert; Hannover; Germany

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