HP XP24000, XP20000 manual Capacity List for Each Emulation Type

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 Table 61 (page 154). 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 Table 62 (page 155). 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

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