
NOTE:
If you use LUSE volumes, you must add 1 to the value calculated by the above formula.
• Maximum number of pairs that can be created:
Use the following formulas to calculate the maximum number of pairs you can create:
• When one pair of extended shared cache memories is used
Maximum number of pairs = ( ↓ (11,605 /Number of bitmap areas) ↓ )
The ↓…↓ symbols around a value indicate the value should be rounded down to the nearest
integer.
• When two pairs of extended shared cache memories are used
Maximum number of pairs = ( ↓ (28,671 /Number of bitmap areas) ↓ )
The ↓…↓ symbols around a value indicate the value should be rounded down to the nearest
integer.
NOTE:
If the calculated maximum number of pairs exceeds 16,384, the actual maximum number of
pairsislimitedto16,384.
NOTE:
The capacit
y of OPEN-V is variable. To calculate the maximum number of pairs for OPEN-V,
use the formula.
CAUTION:
BitmapareasusedforContinuousAccessXPJournalarealsousedforContinuousAccessXP.
If you use Continuous Access XP and Continuous Access XP Journal, use the total number of
both pairs.
Journal gr
oups
Continuou
s Access XP Journal journal groups have the following requirements:
• Each Continuous Access XP Journal pair must be assigned to one and only one journal group.
•Table14lists journal group specifications.
Continuous Access XP Journal user guide
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