HP StorageWorks XP10000 - Disk Array Configuration Manual page 43

Parameter
fg g partition fragment size
fh h partition fragment size
See Notes for disk parameters.
Notes for disk parameters
1. The value of pc is calculated as follows:
pc = nc * nt * ns
The nc of OPEN-x CVS corresponds to the capacity specified by SVP or remote console.
The CVS size of OPEN-x is specified by capacity (megabyte), not by number of cylinders.
The number of cylinders of an OPEN-x CVS volume can be obtained by the following calculation
( ... means round up to integer).
The number of cylinders = (specified capacity in megabytes from SVP or remote console) x
1,024 / 720 .
Example
When 37 MB is specified for an OPEN-3 CVS volume from SVP,
the number of cylinders of the OPEN-3 CVS can be
calculated as follows:
37 x 1,024 / 720 = 52.62
52.62
The OPEN-3 CVS volume has 53 cylinders.
2. The value of pa must be equal to or more than 131,072.
3. The number of cylinders of a Logical Unit Size Expansion (LUSE) composed of OPEN-x CVS
volumes corresponds to the capacity specified by the SVP or the remote console. CVS size of
OPEN-x is specified by the capacity (megabytes), not by the number of cylinders. The number
of cylinders of the OPEN-x CVS volume can be obtained by the following calculation ( ...
means round up to integer):
The number of cylinders = (specified capacity in megabytes from SVP or remote console) x
1,024 / 720 x n
where n is the number of concatenated volumes for LUSE.
Example
When 37 MB is specified for the OPEN-3 CVS volume and the
four volumes are concatenated, the number of cylinders of
the OPEN-3 CVS can be calculated as follows:
37 x 1,024 / 720
The LUSE for the OPEN-3 CVS volume has 212 cylinders.
OPEN-E
1,024
1,024
= 53
x 4 = 52.62
Emulation Type
OPEN-E*n (n=2 to
36)
1,024
1,024
x 4 = 53 x 4 = 212
XP Disk Array Configuration Guide for IBM AIX
OPEN-E CVS OPEN-E CVS*n
(n=2 to 36)
1,024 1,024
1,024 1,024
43