HP StorageWorks LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200 (T1714-96008, June 2006)
136 Overview of Volume Manager and Custom Volume Size
• If the CV capacity unit is megabytes (MB):
To calculate the CV’s user area capacity, use the following formula. The resulting user area capacity is
expressed in kilobytes.
↑↑ user-specified-CV-capacity × 1024 ÷ 64 ↑ ÷ 15 ↑ × 64 × 15
NOTE:
• Round up the value enclosed by two up arrows (↑ ) to the nearest whole number.
• The user-specified CV capacity is expressed in megabytes.
To calculate the CV’s entire capacity, use the following formula. The resulting entire capacity is
expressed in megabytes:
↑ user-area-capacity ÷ boundary-value ↑ × boundary-value ÷ 1024
NOTE:
• Round up the value enclosed by two up arrows (↑ ) to the nearest whole number.
• The user area capacity is expressed in kilobytes.
• The boundary value is expressed in kilobytes. The boundary value depends on volume
emulation types and RAID levels (see Table 28 on page 138).
• If the CV capacity unit is cylinders (Cyl):
To calculate the CV’s user area capacity, use the following formula. The resulting user area capacity is
expressed in kilobytes.
user-specified-CV-capacity × 64 × 15
NOTE: The user-specified CV capacity is expressed in cylinders.
To calculate the CV’s entire capacity, use the following formula. The resulting entire capacity is
expressed in megabytes.
↑ user-area-capacity ÷ boundary-value ↑ × boundary-value ÷ 1024
NOTE:
• Round up the value enclosed by two up arrows (↑ ) to the nearest whole number.
• The user area capacity is expressed in kilobytes.
• The boundary value is expressed in kilobytes. The boundary value depends on volume
emulation types and RAID levels (see Table 28 on page 138).
• If the CV capacity unit is blocks:
To calculate the CV’s user area capacity, use the following formula. The resulting user area capacity is
expressed in kilobytes.
user-specified-CV-capacity ÷ 2
NOTE: The user-specified CV capacity is expressed in blocks.
To calculate the CV’s entire capacity, use the following formula. The resulting entire capacity is
expressed in blocks. To convert the resulting entire capacity into megabytes, divide this capacity by
2,048.
↑ user-specified-CV-capacity ÷ (boundary-value × 2) ↑ × (boundary-value × 2)