8x00 family of Disk Arrays 3.02.00 (AA-RW7SL-TE, March 2009)

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 HP MPIO

EVA DSM is not installed.

To run this utility on a system where the HP MPIO EVA DSM is installed, complete the following steps:

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.

The hpprutil utility supports the following commands:

• hpprutil devices

• 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 are no devices present, the following message is displayed: No Devices

Found.

Example:

hpprutil devices

NT Disk#ReservationSCSI AddressDevice NameDevice#

Disk1PR3.0.2.1COMPAQ HSV2101

Disk2PR3.0.2.2COMPAQ HSV2102

hpprutil clear device

Syntax: hpprutil clear device=x

Syntax: hpprutil clear device=m n

The hpprutil clear device command clears the reservation present on device x, or clears the

reservation present on devices starting from m to n (both inclusive), depending on the input parameter

specified.

Example:

hpprutil clear device=1

HP MPIO Full Featured DSM for EVA4x00/6x00/8x00 family of Disk Arrays 3.02.00 41