Open Systems Features And Functions; Open Systems Middleware; Lun Management - Acer HDS WMS100 Reference Manual

5.5

Open Systems Features and Functions

The WMS100 subsystem offers many features and functions specifically for the open-systems
environment. The WMS100 subsystem also supports important open-system functions, such as
fibre-channel arbitrated-loop (FC-AL) and fabric topologies, command tag queuing, multi
initiator I/O, and most industry-standard software and middleware products which provide
host fail-over, I/O path fail-over, and logical volume management functions.
5.5.1

Open Systems Middleware

Open-system middleware products provide host fail-over capability, I/O path fail-over
support, and logical volume management in the open-systems environment. Middleware is
not usually supplied as part of the basic operating system.
5.5.2

LUN Management

Each LUN can be assigned to multiple fibre-channel ports to provide I/O path fail-over with
middleware support.
88 Chapter 5 Functional and Operational Characteristics