HP XP20000XP24000 Disk Array - Manual (Page 44)

Note : When the license key for a program product expires, the license key of a program product which
requires the expired program product will be also disabled.
Licensed Capacity
The licensed capacity is volume capacity that you are licensed to use with a program product option.
You need to estimate the amount of volume capacity that you want to use with the program product
option before you purchase the permanent key or the term key. The licensed capacity has three types
depending on the program product option.
This section explains the licensed capacity types and how to estimate the licensed capacity. For
details on which licensed capacity type to be estimated for the program product option, see
“ Remote Web Console Options ” on page 45.
The licensed capacity has three types:
• Used capacity
The licensed capacity is calculated from the capacity that the program product option will use.
See below for how to calculate the licensed capacity.
• Mounted Capacity
The licensed capacity is calculated from the capacity mounted in the entire disk drive of the
storage system. For details on how to calculate the licensed capacity, contact your HP service
representative.
• Unlimited Capacity
You can use the program product option regardless of the volume capacity.
The following explains how to calculate the licensed capacity based on the used capacity. The method
for calculating volume capacity depends on volume emulation types.
Table 10 Methods for Calculating Capacity of a Volume
Volume Emulation Type Formula for Calculating Capacity of a Volume
3380-x 720 KB × (The number of user cylinders)
3390-x 870 KB × (The number of user cylinders)
OPEN-x Same as the capacity that you specified when creating the volume.
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.
You can use the formulas in
Table 10 on page 44 to estimate capacity for purchase. An example
is given below:
Table 11 An Example of Estimating Capacity for Purchase
Item Value
Volume emulation type 3390-3
Number of user cylinders 3,339
Number of volumes 2,048
Total capacity of all the volumes
870 KB Ч 3,339 Ч 2,048 = 5,949,296,640 KB
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 = 5.54 TB
Estimated capacity for purchase At lease 6 TB
44 Installation Requirements and Procedures