HP XP7 Storage - Manual (Page 75)

Table 21 Reading of command device setting and group information (continued)
Security to be set Reading of device
group or copy
group information Command device setting HORCM_LDEVG
Group
information
acquisition User
authentication Security
CMD security Read
1
OFF ON ON
User authentication
required
CMD security Do not read ON
User authentication
required
Only
HORCM_DEV
allowed
- Read
2
- - - Defined
Notes:
1. Read the entire group information in the storage system.
2. Read the information of device group and copy group from the contents of the configuration definition file regardless
the setting of command device.
Define device group
A device group is created by specifying a device name and a device group name. Once a device
group is created, the device group name, the LDEV number, and the information if there is copy
group definition or not are stored in the storage system as configuration information.
The maximum number of device groups is 1,024 in one storage system. The maximum 65,279
LDEVs can be placed under the device group. And one LDEV can be placed in multiple device
groups.
Notes when specifying a device name
•
Multiple device names can be defined in one LDEV (Max: 1,024 names).
•
The length of a device name must be up to 32 characters.
•
In the device group that does not become an element of copy a group, the same device name
can be used in the same device group.
•
In the device group that becomes an element of a copy group, a device group name must be
unique in the device group. It is because a pair is created between LDEVs that have same
device names in respective primary and secondary volumes at the group operation of a
replication series command.
Notes when specifying a device group name
•
The length of a device group name must be up to 32 characters.
•
A device group name must be unique within the storage system. The device group name
cannot be duplicated in one storage system.
•
When a device group name is specified by the raidcom command option and an LDEV to
operate is specified by the device name, all devices that have the same name with the
beginning of the specified name will be operated.
The contents of the following operations that can be executed for a device group are expressed
hereafter with its use cases.
1.
Device group creation
LDEV grouping function 75