User`s guide

Chapter 4 Configuring Your Library
Configuring Devices
Scalar i6000 User’s Guide 184
Setting the View for the SCSI Host Device Column 4
Click View at the top of the SCSI Host dialog box. If you want to see
product details, select the Show Details check box. If you want to see only
the names of the devices available for mapping, clear the Show Details
check box to toggle the display back to the default view.
FC Host 4
The FC Host command enables you to manually modify host information
and set LUN mappings.
During device discovery, a particular partition or drive could map to a
higher
LUN space than is optimal for a particular application. The FC Host
command enables you to create a virtual private remapping of available
LUNs for a specific Fibre Channel-attached host. LUN mapping is
required to give hosts access to partitions and devices. You also can make
devices appear to the host as if they were at lower LUNs in order to
optimize system performance.
Use the FC Host command to map partitions when
a Fibre Channel host is connected either to the
MCB or to an I/O blade.
Depending on host operating system constraints, it might be necessary to
reboot or reconfigure the host because of device map changes that result
from using the FC Host command.
If you change LUN mapping after host computers
or applications have already discovered devices,
you must make sure that device discovery occurs
again. Device discovery occurs automatically
when you reboot the library. Some host
computers have plug and play capability, which
discovers devices automatically. In general, host
applications do not discover devices
automatically.
Note
CAUTION