User's Guide

Chapter 6 Storage Networking
Configuring Data Path Failover
Scalar i500 User’s Guide 155
Details about data path failover include:
• The tape drives must be HP LTO-5 Fibre Channel tape drives.
• HP LTO-5 FC tape drive firmware must be at the version qualified
with the Scalar i500 library (see the Scalar i500 Release Notes for
qualified firmware levels).
• The library must have a Storage Networking license sufficient to
cover the tape drive(s) on which you want to configure data path
failover.
• Both FC ports on the tape drive must be connected to a host or
switch. Neither tape drive port may be connected to a Fibre Channel
I/O blade.
• Data path failover must be enabled on the tape drives (data path
failover is disabled by default).
• Tape drive topology settings must be set to Point to Point.
Enabling Data Path
Failover 6
To enable data path failover:
1 Connect both tape drive Fibre Channel ports (Port 1 and Port 2) to a
host or switch (see Figure 21
).
Note: If you are NOT using data path failover on a tape drive, then
only Port 1 is used for data path or control path transmission.
The library and host will not recognize Port 2 unless data path
failover is enabled on the tape drive.