Calculating Differential Tables For Mainframe Volume Migration; Control Cylinders By Emulation Type - HP StorageWorks XP10000 User Manual
Business copy xp
Hide thumbs
Also See for StorageWorks XP10000:
- Owner's manual (92 pages) ,
- Site preparation manual (80 pages) ,
- Site prep manual (78 pages)
Table of Contents
Advertisement
You can estimate the maximum number of migration plans that can be executed concurrently by applying
the previously described conditions to the following equation:
•
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:
[
(
1 20
)
=
20
×
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:
(
X
+
Y
) 15
×
÷
•
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.
Table 26
Control cylinders by emulation type
Emulation type
3380-3
3380-3A
3380-3B
3380-3C
3380-F
3380-K
3380-KA
3380-KB
3380-KC
3390-3
3390-3A
3390-3B
3390-3C
3390-3R
3390-9
3390-9A
] 13,652 or 30,718
.
≤
Z
=
Total number of differential tables per migration plan
Number of control cylinders
7
7
7
7
22
7
7
7
7
6
6
6
6
6
25
25
Σ α ( )
Table
26).
(
3339
+
6
) 15
(
1916 32
×
÷
Business Copy XP user guide for the XP10000/XP12000
=
, where:
β ( )
, where:
1916 32
.
×
)
=
0.81836
.
×
81
Advertisement
Table of Contents
