HP 3PAR VMware ESX Implementation Guide

15. When all of the HP 3PAR StoreServ Storage iSCSI ports have been added to the Dynamic
Discovery tab, close this window.
16. Reboot the ESX host. If virtual machines are active, either shut them down or suspend them.
The ESX host and HP 3PAR StoreServ Storage should now be configured for use. Using the
showhost command on the HP 3PAR StoreServ Storage, the new iSCSI connections should
now show as present.
# showhost
Id Name ----------------WWN/iSCSI_Name---------------- Port
-- iqn.1998-01.com.vmware:hpdl380-01-11a38a59 0:1:2
iqn.1998-01.com.vmware:hpdl380-01-11a38a59 1:1:2
As new LUNs are exported to the ESX iSCSI host, a rescan must be performed on the iSCSI
software adapter. This is done the same so that FC LUNs would be rescanned:
Figure 41 Rescanning for New Storage Devices
Click Rescan, select the Scan for New Storage Devices check box, then click OK to rescan for
new LUNs exported to the ESX iSCSI host.
iSCSI Failover Considerations and Multipath Load Balancing
NOTE: For information about multipathing and configuring to Round Robin policy for all
connectivity types (FC, FCoE, and iSCSI, see “Multipath Failover Considerations and I/O Load
Balancing” (page 39).
Performance Considerations for Multiple Host Configurations
The information in this section should be considered when using multiple ESX hosts, (or other hosts
in conjunction with ESX hosts), that are connected in a fan-in configuration to a pair of HP 3PAR
StoreServ Storage ports.
NOTE: If you are running W2K8 VM Cluster with RDM-shared LUNs, then individually change
these specific RDM LUNs from Round Robin policy to Fixed Path policy.
ESX/ESXi Additional Feature Considerations
To install the VAAI plug-in and to take advantage of new ESX/ESXi and HP 3PAR StoreServ Storage
features, see “ESX/ESXi 4.1, ESXi 5.x Additional Feature Considerations” (page 50).
iSCSI Failover Considerations and Multipath Load Balancing 73