HP MPIO Full Featured DSM for EVA4x00/6x00/8x00 family of Disk Arrays 3.00.00 Installation and Reference Guide (AA-RW7SJ-TE, March 2008)

HP MPIO EVA DSM p
erformance monitoring provider
The HP MPIO EVA D
SM performance monitoring provider (HpPerfProv.DLL) helps you monitor the
Input/Output
(I/O) performance of a device path using the system monitor.
To start the pe
rformance monitoring, complete the steps below:
1. Select Start >
Programs > Hewlett-Packard > EVA DSM > Path Performance.
Alternatively, you can select Start > Run a nd execute the command perfmon /wmi.
2. Select HP DSM High Performance Provider p erformance object and add the appropriate counters.
HP MPIO EVA DSM persistent reservations clear utility
The HP MPIO EVA DSM persistent reservations clear utilit y enables you to view and clear reservations
on the disk (s) that are left behind due to incorrect installation or removal of the HP MPIO EVA DSM or
an unsuccessful cluster node failover.
CAUTION:
Using this utility incorrectly may result in loss of data and/or incorrect operation of MSCS/Failover
Cluster. HP shall not be liable for problems resulting from the incorrect use of this utility or for solving
them.
The persistent reservations clear utility is located on the HP MPIO EVA DSM installation media, and gets
copied to the HP MPIO EVA DSM installation directory during the installation. You can run this utility
either on a system that has HP MPIO EVA DSM installed or on a system where HP MPIO EVA DSM
is not installed.
To run this utility on a system where the HP MPIO EVA DSM is installed, complete the steps below:
1. Select Start > Programs > Hewlett-Packard > EVA DSM > HPDSM PR Utility.
2. Enter the command hpprutil /? at the command prompt to display the instructions for using
this utility.
This chapter describes the following hpprutil commands:
•hpprutildevices
• hpprutil clear device
• hpprutil help
hpprutil devices
Syntax: hpprutil devices
The hpprutil devices command displays details of reservations on the devices as shown in the
following example. If there a re no devices present, the following message is displayed: No Devices
Found.
Example:
hpprutil devices
Device#
Device Name
SCSI Address
Reservation
NT Disk#
1
COMPAQ HSV210 3.0.2.1
PR
Disk1
2 COMPAQ HSV210 3.0.2.2
PR
Disk2
hpprutil clear device
Syntax: hpprutil clear device=x
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Software components