Chapter 6 Storage Networking
Configuring Control Path Failover
Scalar i500 User’s Guide 152
• A tape drive can be configured for both control path failover and data
path failover (see Configuring Data Path Failover
on page 156).
• You can manually force a failover (see Forcing Control Path Failover
on page 153).
You can only configure control path failover from the Web client. The
path to open the appropriate screen is:
1 From the Web client, select
Setup > Control Path.
2 Select the partition to set the control path and click Next.
3 Select the Control Path Type.
There are three different types of control path failovers:
• Basic Control Path Failover
• Multi-Control Path Failover
• Advance Control Path Failover
Basic Control Path
Failover (BPF) 6
Basic control path failover configurations provide a single path of
failover, and are supported by a fibre switch on the same fabric that
supports NPIV (N_Port ID virtualization) connected to HP LTO-5 and
LTO-6 drives.
Multi-Control Path
Failover (MCPF) 6
This configuration option requires a Storage Networking license and
allows you to configure dual-port IBM and/or HP LTO-5 and higher
drives for multi-control path operation, which provides redundant paths
to the partition. To configure drives for Multi-Control Path access, host
application support is required in support of redundant path access..
Multi-Control Path configurations are supported for single as well as
dual-ported IBM and/or HP LTO 5 and higher FC drives. In addition to
the Fibre Channel drives, you need the following:
• A Storage Networking license must be installed on the library and the
associated drive count must be sufficient to cover all drives involved
in the multi-path configuration.
• The tape drives must NOT be connected to an FC I/O blade.
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