HP Surestore Disk Array 12h - And FC60 Manual page 118

Restriction
Any Windows workstation attempting to use the
HP Storage Manager 60 software without the
TCP/IP Protocol software installed is not
supported.
When controller failover occurs in an
active/active controller pair and ownership of
volumes transfers from the failed preferred
owner to the other controller of the pair. The
failed controller is replaced and brought online.
Until the volume group ownership is transferred
back to the preferred controller owner, you lose
I/O path failover protection for the second
controller.
118
Workaround
Install the TCP/IP Protocol software on the
Windows workstation and assign the
workstation a static IP address.
It may take 5 minutes after the failed controller
is replaced and brought online for a rescan to
detect and return ownership to the preferred
controller.
To ensure I/O path failover protection,
immediately after replacing the controller select
the
option in the Array Management Window to
transfer volume groups back to preferred
controller owners.
For more information, see the Array
Management Window Help.