HP Storage Essentials NAS Manager Software - Manual (Page 603)

Storage Essentials 5.00.01 User Guide 573
gigabytes (0.887 GB) and round the output (0.89 GB), the capacity in Capacity Manager matches
the number in Chargeback Manager.
Figure 83 Capacity in Capacity Manager
How a Depreciation Method Is Calculated
This section describes the following:
• ” Calculating Straight Line Depreciation ” on page 573
• ” Calculating Fixed Declining Balance ” on page 574
• ” Calculating Double Declining Balance ” on page 576
Calculating Straight Line Depreciation
When the management server calculates straight line depreciation, it calculates depreciation based
on a fixed rate. These instructions describe how the management server performs the straight line
depreciation calculation. An example is provided for each step so that you can try the calculations
for yourself.
The following is how the management server calculates straight line depreciation:
1. The management server rolls back the purchase date to the beginning of the purchase month. If
the purchase date is later than today (for example, a future purchase), then the purchase date is
roll back to today.
Example: Assume the purchase date of an element is January 15, 2003. The management
server adjusts the purchased date to January 1, 2003 when calculating months to depreciate.
2. It determines the period ending date. This is equivalent to the last day of the previous full month.
Example: Assume today's date is January 9, 2004. The management server sets the period
ending to December 31, 2003.
3. The management server calculates the delta between purchase date and the period ending. This
determines how many months worth of depreciation amount the management server need to
take into account.