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Chapter 1 Installation Procedure
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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)”.
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)”.
PD01 PD00 PD03 PD02 PD05PD04 PD07PD06 PD09PD08 PD0b PD0a PD0dPD0c PD0e
PD11 PD10 PD13 PD12 PD15PD14 PD17PD16 PD19PD18 PD1b PD1a PD1dPD1c PD1e
Spare Disks
LD00 LD01 LD02 LD03 LD04
RANK00 RANK01 RANK02 RANK03 RANK04
LD05 LD06 LD07 LD08
LD09
RANK05 RANK06 RANK07 RANK08
RANK09
MV
RV
Control Volume
LD0a
RANK0A