HP StorageWorks XP Remote Web Console Software - Manual (Page 56)

Table 16 Number of Cylinders According to
Each Emulation Type (continued)
Number of Cylinders Emulation type
10,017 3390-9
32,760 3390-L
65,520 3390-M
1,770 H6586-G
885 H6586-J
2,655 H6586-K
1,113 H6588-1
3,436 H6588-3
10,017 H6588-9
32,760 H6588-L
1,770 NF80-E
885 NF80-J
2,655 NF80-K
•
The number of the required bitmap areas:
The number of bitmap areas to be used by all data volumes that form pairs is calculated from
the number of cylinders. The calculated number of bitmap areas is referred to as the required
number of bitmap areas in the following formula. Use the following formula to calculate the
required number of bitmap areas for a data volume. The … symbols enclosing a value
indicate that the enclosed value should be rounded up to the nearest integer.
The required number of bitmap areas = ( ((number of cylinders Ч 15) ч 122,752) )
◦ number of cylinders × 15 indicates the number of slots
◦ 122,752 is the number of slots that a bitmap area can manage
NOTE: If the calculated required number of bitmap areas exceeds the total number of bitmap
areas in the storage system, the number of pairs that can be created will be limited.
•
The maximum number of pairs that can be created:
The maximum possible number of pairs that can be created depends on the number of bitmap
areas of the storage system and the required number of bitmap areas required to create pairs.
The number of bitmap areas of the storage system depends on the capacity of shared memory.
The relationship between the area number of shared memory and the number of bitmap areas
in the storage system is described in
Table 17 (page 56) .
Table 17 Relationship between Additional Shared Memory and Total Number of Bitmap Areas
of the Storage System
Total Number of Bitmap Areas of Storage
System
Additional Shared Memory for Universal
Replicator for Mainframe
0 No additional shared memory for Universal
Replicator for Mainframe
7,424 Additional shared memory for Universal
Replicator for Mainframe is installed
16,384 Extension 1
56 Preparing for Universal Replicator for Mainframe Operations