9.5 HP P4000 DSM for MPIO Deployment Guide (AX696-96111, September 2011)

4. Click the MPIO button or tab.
If the MPIO button or tab is not available, MPIO is not installed and enabled.
5. From the Load balancing policy drop-down list, select either Fail Over Only or Round Robin.
6. Click OK.
7. Click OK.
Troubleshooting MPIO
Verifying HP DSM for MPIO operations
After logging on to a volume via iSCSI, the HP DSM for MPIO automatically builds a data path to
each storage system in the cluster and one administrative path. You can verify the HP DSM for MPIO
operations by looking at the Details window of the iSCSI connection for the volume after logging on
to that volume.
Figure 8 Verifying the HP DSM for MPIO connections
What happens if a path fails with the HP DSM for MPIO
If one I/O path fails, volume I/O continues because additional active I/O paths to the iSCSI SAN
remain, as illustrated in Figure 9 (page 11).
10 Troubleshooting MPIO