
Chapter 8. Host attachment 317
Figure 8-3 DS8000 multipathing implementation that uses two paths
The DS8000 supports several multipathing implementations. Depending on the environment,
host type, and operating system, only a subset of the multipathing implementations is
available. This section introduces the multipathing concepts and provides general information
about implementation, usage, and specific benefits.
Subsystem Device Driver
The IBM Subsystem Device Driver (SDD) software is a generic host-resident pseudo device
driver that is designed to support the multipath configuration environments in the DS8000.
The SDD resides on the host system ...