Mpxio Overview; Preparing The Host System; Enabling Mpxio For Hp P6300/P6500 Eva - HP EVA P6000 User Manual

MPxIO overview

The Oracle multipathing software (MPxIO) provides basic failover and load-balancing capability
to HP P6000, and EVA4x00/6x00/8x00 storage systems. MPxIO allows the merging of multiple
SCSI layer paths, such as an iSCSI device exposing the same LUN via several different iSCSI target
names. Because MPxIO is independent of transport, it can multipath a target that is visible on both
iSCSI and FC ports. This section describes only the iSCSI implementation of MPxIO with the iSCSI
or iSCSI/FCoE modules.
For more information about MPxIO, see the Solaris Fibre Channel and Storage Multipathing
Administration Guide at: http://docs.sun.com/source/819-0139.

Preparing the host system

To verify that MPxIO is enabled:
1. Enter the following command to verify that the MPIO setting is no:
cat kernel/drv/iscsi.conf
2. 2. Verify mpxio-disable="no"
If setting is yes change to no, and reboot:
Reboot -- -r
Example: MPxIO on all iSCSI port settings in /kernel/dev/iscsi.conf.
# Copyright 2006 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
#ident "@(#)iscsi.conf 1.2 06/06/12 SMI"
name="iscsi" parent="/" instance=0;
ddi-forceattach=1;
#
# I/O multipathing feature (MPxIO) can be enabled or disabled using
# mpxio-disable property. Setting mpxio-disable="no" will activate
# I/O multipathing; setting mpxio-disable="yes" disables the feature.
#
# Global mpxio-disable property:
#
# To globally enable MPxIO on all iscsi ports set:
# mpxio-disable="no";#
# To globally disable MPxIO on all iscsi ports set:
# mpxio-disable="yes";
#
mpxio-disable="no";
#

Enabling MPxIO for HP P6300/P6500 EVA

This section describes the steps necessary to configure a Solaris server to recognize an HP storage
array in an iSCSI multipath environment with the iSCSI or iSCSI/FCoE modules.
Edit the scsi_vhci.conf file
HP EVA storage arrays are supported with MPxIO:
As symmetric devices only
With no load balancing
With no failback
To configure MPxIO for HP storage devices, the appropriate information needs to be added in the
/kernel/drv/scsi_vhci.conf file. To enable MPxIO for HP storage:
1. Use a text editor to change the configuration file. For example:
# vi /kernel/drv/scsi_vhci.conf
106 iSCSI or iSCSI/FCoE configuration rules and guidelines