Filter
Top Products
Hitachi Command Control Interface (CCI) User and Reference Guide 363
C.1 LUN Configurations on the RAID Storage Systems
The Hitachi RAID storage systems (9900V and later) manage the LUN configuration on a port
through the LUN security as shown in Figure C.4.
LUN (M+1 - MAX on Port
LUN (N+1 - M) on Port LUN (0 - N) on Port
LUN 0 - N
on
Group A
WWN1 for Host1
LUN 0 - M-N-1
on
Group B
WWN2 for Host1
WWN4 for Host2
LUN 0 - MAX-M-1
on
Group C
WWN3 for Host1
WWN5 for Host2
WWN6 for Host3
Port
Absolute LUNs
LUNs on Group
Mapped Hosts
Explanation of terms:
Group: A Group name registered by LUN security configuration on the port.
WWN: WWN list on a Group registered by LUN security configuration on the port.
MAX: The maximum LUN. 2048 for USP V/VM, 2048 for USP/NSC, 512 for 9900V.
Figure C.4 LUN Configuration
CCI uses absolute LUNs to scan a port, whereas the LUNs on a Group are mapped for the host
system so that the target ID & LUN which is indicated by the raidscan command will be
different from the target ID & LUN shown by the host system. In this case, the target ID &
LUN indicated by the raidscan command should be used.
In this case, you must start HORCM without a description for HORCM_DEV and HORCM_INST
because target ID & LUN are unknown. Use the port, target ID, and LUN displayed by the
raidscan -find or raidscan -find conf command for HORCM_DEV (see Figure C.5).
Note: For det
ails on LUN discovery based on a host group, see section 4.20.
# ls /dev/rdsk/* | raidscan -find
DEVICE_FILE UID S/F PORT TARG LUN SERIAL LDEV PRODUCT_ID
/dev/rdsk/c0t0d4 0 S CL1-M 0 4 31168 216 OPEN-3-CVS-CM
/dev/rdsk/c0t0d1 0 S CL1-M 0 1 31168 117 OPEN-3-CVS
/dev/rdsk/c1t0d1 - - CL1-M - - 31170 121 OPEN-3-CVS
Figure C.5 Displaying the Port, TID, and LUN Using raidscan
UID: displays the UnitID for multiple RAID configuration. If UID is displayed as ‘-’ then
the command device for HORCM_CMD is not found.
S/F: displays that a PORT is SCSI or fibre.
PORT: displays the RAID storage system port number.
TARG: displays the target ID (converted by the fibre conversion table, see next section).
LUN: displays the Logical Unit Number (converted by the fibre conversion table).
SERIAL: displays the production number (serial#) of the RAID storage system.
LDEV: displays the LDEV# within the RAID storage system.
PRODUCT_ID: displays product-id field in the STD inquiry page.