HP XP7 Command View Advanced Edition Administrator Guide (Web Version) (TK981-96004, May 2014)

- If there is one host that recognizes the P-VOL and one host that recognizes the S-VOL, install
a Device Manager agent on each of the hosts.
- If there are multiple hosts that recognize the P-VOL and multiple hosts that recognize the S-
VOL, install a Device Manager agent on one of the hosts that recognize the P-VOL and one
of the hosts that recognize the S-VOL.
Note that if you manage copy pairs defined in a snapshot group, install a Device Manager
agent on the host that recognizes the P-VOL (and you do not need to install it on the host that
recognizes the S-VOL).
• RAID Manager must be installed on hosts as follows:
If there are multiple hosts that recognize the P-VOL and multiple hosts that recognize the S-
VOL, install RAID Manager on one of the hosts that recognize the P-VOL and one of the hosts
that recognize the S-VOL.
If the command devices recognized by a host support the authentication function, install version
01-25-03/01 or later of RAID Manager on the host.
• If there are multiple NICs on the host, the Device Manager agent and RAID Manager must
use the same IP address.
Copy pair (P-VOL and S-VOL) conditions:
• The P-VOL and S-VOL must be managed by a single management server (Device Manager
server).
• The P-VOL and S-VOL must be recognized by the hosts (application servers). Note that if you
manage copy pairs defined in a snapshot group, the S-VOL does not need to be recognized
by the hosts.
HP recommends that P-VOL and S-VOL be assigned to separate hosts.
• From the P-VOL or S-VOL, LUN security must be set for the host (application server).
From the P-VOL and S-VOL, LUN security can be set for different hosts.
Command device conditions:
• Both the host that recognizes the P-VOL and the host that recognizes the S-VOL must recognize
a command device. Note that if you manage copy pairs defined in a snapshot group, the
host that recognizes the S-VOL does not need to recognize a command device.
• From a command device, LUN security must be set for the hosts that recognize the P-VOL or
S-VOL.
For a host that recognizes the P-VOL, LUN security must be set from the command device on
the P-VOL side. For a host that recognizes the S-VOL, LUN security must be set from the com-
mand device on the S-VOL side.
System configuration and requirements46