installation and reference guide HP MPIO Full Featured DSM for XP family of Disk Arrays 3.02.00 (AA-RVJ6H-TE, March 2009)

A Software components
This appendix describes the following components of HP MPIO XP DSM:
•Drivers
• User mode components
Drivers
The HP MPIO XP DSM components include the following multipath drivers:
• Microsoft MPIO Framework Drivers
• MPIO.SYS is the multipathing bus driver.
• MPDEV.SYS is the replacement class driver. It communicates with MPIO.SYS.
• MPSPFLTR.SYS is a port driver filter (HBA upper filter).
• HP DSM driver
• HPXPDSM.SYS is the HP DSM driver for XP disk arrays. It interacts with MPIO.SYS to provide
device-specific functions.
HP recommends that you do not remove, delete, or disable these drivers while multipath hardware is
attached to your system.
User mode components
The user mode components include:
• HP MPIO DSM manager GUI
• HP MPIO XP DSM command line interface (CLI)
• HP MPIO XP DSM performance monitoring provider
• HP MPIO XP DSM persistent reservations clear utility
HP MPIO DSM manager GUI
The HP MPIO DSM manager GUI monitors and manages the HP DSMs. It also enables administrator
to receive e-mail notifications on path or device failure events. The HP MPIO DSM Manager is provided
as a separate installation package.
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