Chapter 8 Troubleshooting
Duplicate Medium Changers Discovered
Scalar i500 User’s Guide
332
• If only one host is connected to a target port, you can use channel
zoning to tell the target port which devices to see (see
Configuring FC
I/O Blade Channel Zoning
on page 105).
• If more than one host is connected to a target port, you can use host
mapping to tell each host which devices to see (see
Configuring Host
Mapping
on page 111).
Duplicate Medium Changers Discovered
You may see one or more medium changers being discovered multiple
times. For information on why this happens, see
FC I/O Blade Internal
Virtual Port for Medium Changers
on page 104.
To prevent this, do the following:
• Ensure that host mapping is enabled (see
Enabling/Disabling FC
Host Mapping
on page 107).
• Assign each medium changer a unique LUN and map each one to the
appropriate host (see
Configuring Host Mapping
on page 111).
Identifying Tape Drives
You can use the operator panel and the web client user interfaces to view
information about all tape drives installed in the library. In addition, you
can identify tape drives, including the control path tape drive, in selected
partitions. The web client also allows you to identify tape drives that are
not assigned to specific partitions. On the web client, you can only
identify tape drives that are in a ready state.
The operator panel
Drive Information
screen lists the following
information for each tape drive:
• Control path tape drive status — yes/no
• Vendor