HP StorageWorks LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200 (T1714-96008, June 2006)

LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200 135
NOTE: CVS functions are not applicable to OPEN-L and OPEN-M volumes.
Calculating CV capacity for mainframe systems
When creating a CV, you can specify the CV’s capacity. However, there is a margin of error between the
user-specified CV capacity and the actual CV capacity. To estimate the actual CV capacity, use the
following formula. The resulting CV capacity is expressed in megabytes.
↑ (user-specified-CV-capacity + management-area-capacity) × 15 × capacity-of-a-slot ÷
boundary-value ↑ × boundary-value ÷ 1024
NOTE:
• Round up the value enclosed by two up arrows (↑ ) to the nearest whole number.
• The user-specified CV capacity is expressed in cylinders.
• The management area capacity is expressed in cylinders (see Table 26 on page 138).
• The boundary value is expressed in kilobytes. The boundary value depends on volume emulation types
and RAID levels (see Table 28 on page 138).
• The slot capacity is expressed in kilobytes. The slot capacity depends on the volume emulation types
(see Table 29 on page 139).
Calculating CV capacity for open systems
When creating a CV, you can specify the CV’s capacity. However, there is a margin of error between the
user-specified CV capacity and the actual CV capacity.
This section explains how to calculate the user area capacity and the entire capacity. The term “user area
capacity” refers to the capacity of areas in a CV that can contain user data.
If the emulation type is OPEN-V
The methods for calculating the CV’s user area capacity and the entire capacity vary depending on the
CV capacity unit specified when creating the CV.
NF80-F 1 3,983 22
NF80-K 1 2,655 7
NF80-KA 1 2,655 7
NF80-KB 1 2,655 7
NF80-KC 1 2,655 7
Table 25 CV capacity by emulation type (open systems)
Emulation type Minimum CV capacity
(CYL)
Maximum CV capacity (CYL) Number of control
cylinders (Cyl)
OPEN-V 48,000 KB 3,019,898,880 KB (2.8125 TB) 0 KB (0 Cyl)
OPEN-3 36,000 KB (50 Cyl) 2,403,360 KB 5,760 KB (8 Cyl)
OPEN-8 36,000 KB (50 Cyl) 7,175,520 KB 19,440 KB (27 Cyl)
OPEN-9 36,000 KB (50 Cyl) 7,211,520 KB 19,440 KB (27 Cyl)
OPEN-E 36,000 KB (50 Cyl) 14,226,480 KB 13,680 KB (19 Cyl)
Table 24 CV capacity by emulation type (mainframe systems) (continued)
Emulation type Minimum CV capacity
(Cyl)
Maximum CV capacity
(Cyl)
Number of control
cylinders (Cyl)