HP XP Data Shredder Software - Manual (Page 160)

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.
For 3380 mainframe volumes: 1 cylinder = 1,440 blocks
For 3390 mainframe volumes: 1 cylinder = 1,740 blocks
160 Required volume capacity for emulation types