Hitachi AMS 2100 Hardware Manual page 230

Item
LUN
Controller
Core
RAID Group
Cache Partition
Type
7–48
Table 7-16: Logical Unit Ownership
The LUN column in the table displays the name of the logical unit.
This column displays the controller number assigned to the LUN
This column displays the core number assigned to the LUN. When
core don't exist, this column displays "r;N/A".
This is the name of the displayed RAID group. The default name is
RG-000.)
This column displays the number of cache partitions assigned to the
LUN (Range is 0 - nnn)
This field displays the type of drive(s) contained in the RAID group.
It can be either SAS or SATA. You cannot mix drive types within the
same RAID group.
Configuration
Hitachi AMS 2100/2300 Storage System Hardware Guide
Description