26 control cylinders by emulation type – HP XP Business Copy Software User Manual
Page 81
Business Copy XP user guide for the XP10000/XP12000
81
You can estimate the maximum number of migration plans that can be executed concurrently by applying
the previously described conditions to the following equation:
, where:
•
Σ
(α) is the total number of differential tables needed to migrate all volumes.
•
(β) is the number of available differential tables.
For example, if you want to create 20 migration plans of OPEN-3 volumes (volume size = 2,403,360 KB),
calculate the number of required differential tables (page 83) and enter this number in the equation:
.
Since this equation is true, you can create 20 migration plans of OPEN-3 volumes.
Calculating differential tables for mainframe volume migration
When you migrate mainframe volumes, use the following equation to calculate the total number of
required differential tables per migration plan:
, where:
•
X: The number of cylinders in the volume to be migrated. If the volume is a CVS volume, use the
number of cylinders in the custom volume instead of the default value for the emulation type.
•
Y: The number of control cylinders (See
•
Z: The number of slots that can be managed by a differential table:
.
NOTE:
Round the result of the calculation up to the nearest whole number.
For example, if a volume has the emulation type 3390-3, and 3339 cylinders, calculate the total number of
differential tables with the following equation:
.
When you round 0.81836 up to the nearest whole number, it becomes 1. Therefore, the total number of
differential tables for one migration plan is 1 when emulation type is 3390-3.
The following table shows the number of the control cylinders according to the emulation type.
Σ α
( )
β
( )
=
1 20
×
(
)
20
=
[
]
13,652 or 30,718
≤
Table 26
Control cylinders by emulation type
Emulation type
Number of control cylinders
3380-3
7
3380-3A
7
3380-3B
7
3380-3C
7
3380-F
22
3380-K
7
3380-KA
7
3380-KB
7
3380-KC
7
3390-3
6
3390-3A
6
3390-3B
6
3390-3C
6
3390-3R
6
3390-9
25
3390-9A
25
X Y
+
(
)
15
×
Z
÷
Total number of differential tables per migration plan
=
1916 32
Ч
3339 6
+
(
)
15
1916 32
Ч
(
)
ч
Ч
0.81836
=