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320 Chapter 4 Performing CCI Operations
4.20 Host Group Control
The Hitachi RAID storage systems (9900V and later) have the defined host group in the port
and are able to allocate Host LU every this host group. CCI does not use this host LU, and
specifies by using absolute LUN in the port. Therefore, a user can become confused because
LUN of the CCI notation does not correspond to LUN on the host view and Remote Console.
Thus, CCI supports a way of specifying a host group and LUN on the host view.
4.20.1 Specifying a Host Group
(1) Defining the formats
The way what CCI has addition of argument for the host group to the raidscan command and
the configuration file will not be able to maintain the compatibility with conventional CLI.
Therefore, CCI adopts a way that supports in the form which specifies a host group in the
port strings as follows.
CL1-A-GRP# (GRP# are up to 127)
– Specifying the host group for the raidscan command as follows:
raidscan -p CL1-A-5
– Specifying the host group for the configuration file
#dev_group dev_name port# TargetID LU# MU#
ORA ORA_000 CL2-D-1 4 1 0
ORA ORA_001 CL2-D-1 4 2 0
If the port including a host group is specified to the port name, then maximum of
specifiable LUNs are up to 255.
(2) Specifiable port strings
As the result, CCI supports four kinds of forms in the port name.
– Specifying the Port name without a host group
CL1-A
CL1-An where n : unit ID for multiple RAID
– Specifying the Port name with a host group
CL1-A-g where g : host group
CL1-An-g where n-g : host group=g on CL1-A in unit ID=n