Appendix D Notes on Use for Data Replication
26
(4) Examples of obtaining capacities of LD to be bound through Individual Setting of Configuration
Setting (GUI)
The following are examples of capacities obtained by specifying a capacity or the number of data
disks when logical disks are bound. Refer to D.3.3 “Method of Specifying Configuration
Setting” for details on “Capacity Specification” and “Disk Count Specification”.
Examples 1: Binding with Capacity Specification
1. Capacity obtained when logical disks are bound with 1.1GB specified for RAID5 (4+P):
1.1GB × 1024 = 1126.4MB → (Decimal place rounded up) → 1127MB → (+2MB)*1 →
1129MB → (Alignment) → 1129MB
2. Capacity obtained when logical disks are bound with 1.1GB specified for RAID5 (3+P):
1.1GB × 1024 = 1126.4MB → (Decimal place rounded up) → 1127MB → (+2MB)*1 →
1129MB → (Alignment) → 1131MB
*1: Logical disks are bound in the user-specified capacity + 2MB as the disk array
management area.
Examples 2: Binding with Disk Count Specification
1. Capacity obtained when three logical disks are bound with 266.7GB as the capacity of
RAID5 (4+P):
266.7GB × 1024/3 = 91033.6MB → (Decimal place rounded down) → 91033MB →
(Alignment)*1 → 91033MB*2
2. Capacity obtained when three logical disks are bound with 200GB as the capacity of
RAID5 (3+P):
200GB × 1024/3 = 68266.66MB → (Decimal places rounded down) → 68266MB →
(Alignment)*1 → 68265MB*2
*1: The capacity unit is aligned according to Table D-2. In RAID5, (13+P) is the
greatest, and the maximum value (MB as the capacity unit) is 13MB.
*2: The capacity of the bound logical disks includes 2MB as the disk array management
area.