Management area capacity of a mainframe volume, Management area – HP XP7 Storage User Manual
Page 38
Calculating the size of a 3390-XA, 3390-XB, 3390-XC volume
TIP:
•
3390-XA indicates 3390-3A, 3390-9A, 3390-LA, and 3390-MA.
•
3390-XB indicates 3390-3B, 3390-9B, 3390-LB, and 3390-MB.
•
3390-XC indicates 3390-3C, 3390-9C, 3390-LC, and 3390-MC.
To calculate the entire capacity of a CV, use the following formulas. For the
user-specified-CV-capacity
, specify the capacity of the user area in a CV.
The resulting CV capacity is expressed in megabytes:
( ceil( ( (user-specified-CV-capacity + management-area-capacity)
* 15 * capacity-of-a-slot) / boundary-value) * boundary-value) / 1024
•
The value enclosed in ceil( ) must be rounded up to the nearest whole number.
•
The user-specified-CV-capacity is the capacity of the user area in a CV expressed
in cylinders.
•
The management-area-capacity is expressed in cylinders (see
capacity of a mainframe volume” (page 38)
).
•
The capacity-of-a-slot is expressed in kilobytes. The capacity-of-a-slot value
depends on volume emulation types (see
“Capacity of a slot” (page 39)
).
•
The boundary-value is expressed in kilobytes. The boundary-value value depends on
volume emulation types and RAID levels (see
“Boundary values for RAID levels” (page 39)
).
Management area capacity of a mainframe volume
Management area capacity (cyl)
Emulation type
7 cyl per 1,113 cyl
3390-A
6
3390-3, 3390-3A, 3390-3B, 3390-3C
0
3390-V
25
3390-9, 3390-9A, 3390-9B, 3390-9C
23
3390-L, 3390-LA, 3390-LB, 3390-LC
53
3390-M, 3390-MA, 3390-MB, 3390-MC
5
3390-1
Notes:
•
The management area capacity of a mainframe volume is expressed in cylinders (Cyl).
•
For a Compatible FlashCopy SE volume with a 3390-A emulation type, if you specify a value between 1 and
40,068 cylinders, the space required equals the sum of the specified value and 252 of 40,069 cylinders or more,
calculate the required free space with this formula:
40,320 cylinders + the value rounded up after the decimal point of *A * 1,120 cylinders
where *A = (the specified value - 40,068) ÷ 1,113 cylinders
38
Configuring custom-sized provisioning