HP XP RAID Manager Software - Manual (Page 12)

LDEV nickname function
A unique nickname with up to 32 characters can be given to an LDEV.
LDEV grouping function
In the RAID Manager before supporting P9500, it was required to define a copy group for the
configuration definition file on each host. When changing copy group information, editing of the
configuration definition file was required on each host. In the RAID Manager supporting P9500,
the group information can be defined at a time and stored in the storage system. When changing
group information, only one configuration file needs to be edited, saving time and effort and
eliminating the chance for error due to mismatching edits.
In previous versions of RAID Manager, the copy groups were defined in the configuration definition
file on each host. When the copy group information changed, the configuration definition file had
to be edited on each host. In the current version of RAID Manager that supports the P9500, the
group information is defined once and stored in the storage system. Now when the copy group
information changes, you need to update only one configuration file, saving time and eliminating
the chance for error due to mismatching edits.
In previous versions of RAID Manager, the copy groups were defined in the configuration definition
file on each host. When the copy group information changed, the configuration definition file had
to be edited on each host. In the current version of RAID Manager that supports the P9500, the
group information is defined once and stored in the storage system. Now when the copy group
information changes, you need to update only one configuration file, saving time and eliminating
the chance for error due to mismatching edits.
This new functionality is implemented using LDEV names, device groups, and copy groups:
•
•
Device name:
A name that can be given to one LDEV per the device group. ◦
◦ Each name is associated with a device group in which the LDEV belongs to.
◦ An LDEV nickname can be given to the LDEV as a unique name for the LDEV that is not
related with device group. Only one LDEV nickname can be given for each LDEV.
◦ Device group:
– A group that is configured with one or more LDEVs.
– A device group can belong to only one copy group
– When creating a mirrored of cascaded pair, each copy group must have unique
device groups and device names.
◦ Copy group:
– A group that is defined by specifying two device groups: one device group from
primary side and one device group from the secondary side.
Resource group function
Using Resource Group function, a storage administrator in each resource group can access
respective resource groups only. The storage administrator in each resource group cannot access
the other resources except the one that the administrator manages. This can prevent the risk of
destroying the data by another storage administrator in the other resource groups or of leaking
out the data.
12 Overview