Chapter 3 Configuring Your Library
Working With Control Paths
Scalar i500 User’s Guide
78
Working With Control Paths
The control path tape drive is used to connect partition to a host
application.
The library automatically assigns control paths when you set up
partitions. You can modify the control path at any time.
Table 7
describes
how these control paths are assigned and how to change them.
Table 7 Control Path
Assignment During Partition
Creation
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:
No FC I/O
blades
Any
combination
of tape drive
interface types
(SCSI, FC, or
SAS)
The first tape
drive assigned
to the partition
You must select a tape drive as the control path.
One or more
FC I/O blades
At least one
FC tape drive
The FC I/O
blade
It is recommended that you allow the FC I/O
blade to be the control path for the partition.
(You can select a tape drive as control path if the
tape drive is not connected to an FC I/O blade;
however, your host will end up seeing multiple
medium changers. In addition, using the FC I/O
blade as the control path allows you to utilize the
LUN mapping and host port failover features.)
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.