Hitachi MK-96RD621-08 - Manual (Page 63)

Installation Requirements and Procedures 2-35
Hitachi Universal Storage Platform V/VM Hitachi Storage Navigator User’s Guide
This section explains the licensed capacity type and how to estimate the
licensed capacity. For details on which licensed capacity type should be
estimated for the program product option, see Storage Navigator Options.
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 the Hitachi Data Systems service personnel.
• 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 2-8 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 formulae in Table 2-8 to estimate capacity for purchase. An
example is given below:
Table 2-9 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