User`s guide

Conguring Multipathing Software

This chapter explains how to congure the Sun StorageTek Trac Manager software that is

provided in the Solaris 10 OS for Fibre Channel (FC) devices . It also provides the

considerations while enabling or disabling the multipathing feature on SPARC based systems,

x86 based systems, per-port basis and third-party storage devices.

The following topics are discussed:

■

“Conguring Multipathing” on page 41

■

“Multipathing Considerations” on page 42

■

“Enabling and Disabling Multipathing” on page 42

■

“Enabling or Disabling Multipathing on a Per-Port Basis” on page 45

■

“Conguring Third-Party Storage Devices” on page 47

■

“Conguring Automatic Failback” on page 51

Conguring Multipathing

The multipathing feature for FC devices can be congured to control all Sun supported FC

HBAs. Multipathing is disabled by default for FC devices on SPARC based systems, but is

enabled by default on x86 based systems. Conguration of the multipathing software depends

on how you intend to use your system.

Note – The multipathing feature is not available for parallel SCSI devices but is available for FC

disk devices. Multipathing is not supported on tape drives or libraries, or on IP over FC.

Before you congure third-party devices for multipathing, be aware of the following:

CHAPTER 4