HP XP7 Storage - Manual (Page 85)

Table 20 Software and licensed capacity (continued)
Notes Licensed capacity Option name
•
Continuous Access Journal
•
Business Copy Z
•
Continuous Access Synchronous Z
•
Continuous Access Journal Z
• Compatible FlashCopy
Calculating licensed capacity for a normal volume
The calculation of the normal volume capacity depends on the volume emulation type. Use the
formula in the following table to estimate capacity for purchase. When you calculate the volume
capacity, round the value up to the second decimal place.
Table 21 Formulas for calculating capacity of a normal volume
Formula for calculating capacity of a normal volume Volume emulation type
870 KB X (number of user cylinders) 3390-x
Same as the capacity specified when creating the volume OPEN-x
Note: In the left column of this table, "x" indicates a number or a letter. For example, OPEN-x refers to emulation types
such as OPEN-3 and OPEN-V.
An example is shown in the following table:
Table 22 Example of estimating capacity for purchase
Value Item
3390-3 Volume emulation type
3,339 Number of user cylinders
2,048 Number of volumes
870 KB X 3,339 X 2,048 = 5,949,296,640 KB Total capacity of all the volumes
5,949,296,640 KB / 1,024 = 5,809,860 MB
5,809,860 MB / 1,024 5,673.70 GB
5,673.70 GB / 1,024 5.55 TB
At least 6 TB Estimated capacity for purchase
Calculating licensed capacity for an external volume
Use the following equation to calculate the licensed capacity for an external volume:
External Volume Capacity (KB) = Volume Capacity (number of blocks) X
512 (bytes) / 1,024
Calculating pool capacity
The license capacity of Thin Provisioning is calculated using the total capacity of the Thin Provisioning
pool. If you use Thin Provisioning V-VOLs as P-VOLs or S-VOLs of Business Copy/Continuous Access
Synchronous/Continuous Access Journal, the license capacity of Business Copy/Continuous Access
Synchronous/Continuous Access Journal is calculated using the page capacity allocated to the
Thin Provisioning V-VOLs (that is, used pool capacity).
For more information on calculating pool capacity, see the HP XP7 Provisioning for Open Systems
User Guide and the HP XP7 Provisioning for Mainframe Systems User Guide.
Estimating licensed capacity 85