Hello,
The usual way of sharing the lib is actually via sharing drives ( needs 
DDS licences), control lun should be owned and assigned to master server, 
please check jbconfig man page  or use Gui to configure assigned drives to 
the storage node, this is if you like to share drives, i per say don't 
like sharing drives, so you can just assign some drives to SN and with 
proper zoning considerations, define remote devices for SN that the master 
server is aware of.
There are other approaches, i.e ACLCS server, having multiple partitions 
on the physical library ( in this case Control lun may be assigned to SN).
Please look into persistence binding and also using driver feature to 
harden the tape drive  association to avoid drive resequiencing , since 
you are still doing the install, it's  may be a good idea to have this 
features turned on from get go.
Thanks



Jim Allison <jim.allison AT ASURION DOT COM> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
06/19/2008 11:38 AM
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Subject
[Networker] Storage Nodes on same Library?






Hey folks,

I have a few questions about storage node configuration. I am new to this
shop and we are using a configuration that I am unfamiliar with. We are
running 7.4.2 on Windows 2003 servers. Library is a fiber attached Spectra
Logic T950 (one large partition defined) with fiber attached LTO IV tape
drives (12). We previously had storage nodes using the same library to 
take
some of the I/O load off the primary Networker server. They had issues and
backed out the storage nodes previously (prior to tape drive upgrade). My
question is this; Is a storage node that uses the same library resource as
the primary server a valid configuration and does it not cause library
control contention? When we try to zone in the lib control port, the 
storage
node computer will hang and not boot like it has a  SCSI bus issue. I have
used dedicated storage nodes in the past with drive sharing for lanless
backups, and I thought the main purpose of storage nodes was to run
additional libraries on one master server. Thanks, Jim Allison, Asurion,
Nashville TN.

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