HP StorageWorks XP10000 - Disk Array Configuration Manual page 11

CAUTION:
The correct host mode must be set for all new installations (newly connected ports) to Solaris hosts.
Do not select a mode other than 09 for Solaris. Changing a host mode after the host has been
connected is disruptive and requires the server to be rebooted.
When a new host group is added, additional host group modes (options) may be configured. The
storage administrator must verify if an additional host group mode is required for the host group. For
Solaris, host group mode 7 should always be set as this is a prerequisite when using the Sun SAN
driver.
XP Disk Array Configuration Guide for Sun Solaris 11