HP Hitachi Universal Replicator for Mainframe User Guide (T5278-96044, November 2011)

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
0No additional shared memory for Universal
Replicator for Mainframe
7,424Additional shared memory for Universal
Replicator for Mainframe is installed
16,384Extension 1
32,768Extension 2
44,256Extension 3 (available only for an XP24000
Disk Array)
65,536Extension 4 (available only for an XP24000
Disk Array)
Use the following formula to calculate the maximum possible number of pairs that can be
created, based on the number of bitmap areas described in Table 17 (page 55) and the
required number of bitmap areas you calculated:
maximum number of pairs = ( Number of bitmap areas ÷ required number of bitmap areas
)
The … symbols enclosing a value indicate that the value should be rounded down to the
nearest integer.
NOTE: If the calculated maximum number of pairs exceeds 32,768, the actual maximum
number of pairs is limited to 32,768.
Table 18 (page 55) illustrates the maximum number of pairs according to each emulation type,
when pairs are created without the use of a VLL volume.
Table 18 Maximum Number of Pairs According to Each Emulation Type, When Pairs Are Created
Without the Use of a VLL Volume
Maximum number of pairsEmulation Type
Extension 4Extension 3Extension 2Extension 1Additional
shared
memory for
Universal
Replicator for
Mainframe is
installed
32,76832,76832,76816,3847,4243380-J
32,76832,76832,76816,3847,4243380-E
32,76832,76832,76816,3847,4243380-K
32,76832,76832,76816,3847,4243390-1
32,76832,76832,76816,3847,4243390-2
32,76832,76832,76816,3847,4243390-3
3390-3R
32,76822,12816,3848,1923,7123390-9
13,1078,8516,5533,2761,4843390-L
Requirements and Restrictions for Universal Replicator for Mainframe 55