Capacity list for each emulation type – HP XP External Storage Software User Manual
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Figure 45 Idea of LDEV Capacity
Figure 46 Example of How to Figure Out the Volume Capacity (For OPEN-3)
Capacity List for Each Emulation Type
This section explains the LDEV capacity and volume capacity for each emulation type in the units
of blocks and cylinders.
The numbers of cylinders are calculated from the following formulas.
For 3380 mainframe volumes: 1 cylinder = 1,440 blocks
For 3390 mainframe volumes: 1 cylinder = 1,740 blocks
The minimum data area capacity, the base data area capacity, and control information area
capacity for each emulation type are listed in the
. For the OPEN-L emulation
type, CVs cannot be created. Therefore, the base data area capacity and minimum data area
capacity for OPEN-L emulation type are the same. For the OPEN-V emulation type, the base data
area capacity is not listed because there is no concept of the base data area capacity.
The base LDEV capacity, the minimum LDEV capacity, the maximum external volume capacity,
and the number of LDEVs that can be defined for the external volume with maximum capacity are
listed in the
. For the OPEN-L emulation type, the base LDEV capacity and the
minimum LDEV capacity are the same, because CVs cannot be created. For the OPEN-V emulation
type, the base LDEV capacity is not listed because there is no concept of the base LDEV capacity.
For an emulation type of an open system other than OPEN-V, the LDEV capacity that can be made
when an external volume is mapped is divisible by 1,440 blocks. For an emulation type of a
Capacity List for Each Emulation Type
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