Software User Manual

Figure 70 shows the relationship of the minimum LDEV capacity, base LDEV capacity, minimum data area
capacity, base data area capacity, and control information area capacity.
Figure 70 LDEV capacity
Figure 71 shows how to determine the volume capacity using the example of the OPEN-3 case.
Figure 71 Calculating LU capacity (OPEN-3 example)
Table 26 lists the minimum data area capacity, base data area capacity, and control information area
capacity for each emulation type. 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.
In this section, the numbers of cylinders are calculated from the following formulas.
For3380mainframevolumes:1cylinder=1,440blocks
For3390mainframevolumes:1cylinder=1,740blocks
160
Required volume capacity for emulation types