NEC Storage Manager User Manual page 16

Chapter 1 Installation Procedure
Figure 1-4 shows an example of setting five pairs and one IV on the backup server as a control volume.
A control volume is used when a server issues control I/O to the relevant disk array. For details of a
control volume, refer to 1.5 "Control Volume Setting", 3.9 "Control Volume", and the "Data
Replication User's Manual (Function Guide)".
RANK00
LD00
PD00 PD01 PD02 PD03
PD10 PD11 PD12 PD13
RANK05
LD05
Figure 1-4 LD Configuration Example when a Control Volume Is Used (2000 Series)
• The PD group number for PD and RANK is 00.
• For LD00 to LD09, one LD is associated with one RANK (the whole area for one RANK is assigned
to one LD).
• LD00 and LD05 are in RAID5 (4+P) configuration.
• LD01 to LD04 and LD06 to LD09 are in RAID1 configuration.
• LD00 to LD04 are used for the MV and LD05 to LD09 are for the RV.
• For LD0a, only one small-capacity LD is built with a RANK in RAID0 configuration.
• LD0a is used for an IV as the control volume.
* This configuration is an example. Actual configuration should be determined based on your
business conditions.
For the disk arrays with pool, you can build a small-capacity logical disk for a control volume. For
details of how to build a control volume, refer to descriptions about building logical disks in the
"Configuration Setting Tool User's Manual (GUI)".
MV
RANK01
LD01
PD04 PD05 PD06 PD07
PD14 PD15 PD16 PD17
RANK06
LD06
RV
10
RANK02 RANK03
LD02 LD03
PD08 PD09 PD0a
PD18 PD19 PD1a
RANK07 RANK08
LD07 LD08
RANK04
LD04
PD0b PD0c PD0d PD0e
PD1b PD1c PD1d PD1e
RANK09 RANK0A
LD09
LD0a
Spare Disks
Control Volume