Dell PowerVault MD3600f Hardware Installation And Troubleshooting Manual page 11

MDSM is a graphical user interface (GUI) with wizard-guided tools and a
task-based structure. MDSM is designed to:
• Reduce the complexity when you install, configure, manage, and perform
diagnostic tasks for the storage arrays.
• Contain an event monitoring service that is used to send alerts when a
critical problem with the storage array occurs.
• Provide a command line interface (CLI) to run commands from an
operating system prompt.
Modular Disk Storage Manager Agent
This software resides on each cluster node to collect system-based topology
data that can be managed by the MDSM.
Multipath I/O (MPIO) Software
Multipath I/O software (also referred to as the failover driver) is installed on
each cluster node. The software manages the redundant data path between
the system and the RAID enclosure. For the MPIO software to correctly
manage a redundant path, the configuration must provide for redundant
HBAs and cabling.
The MPIO software identifies the existence of multiple paths to a virtual disk
and establishes a preferred path to that disk. If any component in the
preferred path fails, the MPIO software automatically re-routes I/O requests
to the alternate path so that the storage array continues to operate without
interruption.
Introduction
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