Chapter 3 Configuring Your Library
Working With Control Paths
Scalar i500 User’s Guide 87
Only one tape drive in a partition can be selected as the control path per
partition. In the event that the control path connection to the host
application fails, you can select a new control path for the partition.
Additionally, if the control path for the partition is an HP LTO-5 Fibre
Channel tape drive and you have Storage Networking licensed on the
library, you can select another HP LTO-5 Fibre Channel tape drive for
control path failover (see Configuring Control Path Failover
on page 151
for details).
The
Setup > Control Path screens list a selected partition’s tape drives,
including the tape drive that is currently designated as the control path.
You can designate a new control path for the partition by selecting a
different tape drive. You can also disable a partition’s control path by
clearing the current control path selection.
One or more
FC I/O blades
At least one
FC tape drive
The FC I/O
blade
Using the FC I/O blade as the control path allows
you to utilize the LUN mapping and host port
failover features.
You can select a tape drive as control path if the
tape drive is not connected to an FC I/O blade.
However, it is recommended that you allow the
FC I/O blade to be the control path for the
partition.
You cannot select a tape drive as control path if
the tape drive is connected to an FC I/O blade.
One or more
FC I/O blades
No FC tape
drives
The first tape
drive assigned
to the partition
You must select a tape drive as the control path.
Caution: Do not select an FC tape drive as control path if it is
connected to an FC I/O blade. The control path will be
filtered out by the I/O blade and will not be visible to the
host.
If the library
contains:
And the
partition
contains:
Then the
default
control path
for the
partition is:
If you want to change the control path, note the
following: