IMPORTANT: If you perform the calculations manually, you may see a different value than the one displayed in the Storage Cost column. When the management server calculates the storage cost, it does not use the rounded values displayed in the Mounted Storage, Unmounted Storage and Storage Tier columns. The management server rounds the values of all calculation results, except for the total storage cost (Step 4), in the tables for better viewing. In the case of US currency, it rounds the values off to the penny. To preserve accuracy, the management server does not use the rounded values displayed in the tables when it performs any of its calculations.

Step 4 - Review Storage-Based Chargeback Result

IMPORTANT: The management server displays chargeback information up to the end of the previous month. For example, assume you view chargeback information in the middle of February. The calculations for chargeback would include the month of January, but not February.

The total storage-based monthly chargeback is displayed. This number is calculated as follows:

(Total Storage Cost) x (Ownership %) = Ownership Cost

where

•Total Storage Cost is the total Storage Cost from (Step 3 - Review Storage Dependency and Cost).

•Ownership % is the percentage of ownership.

•The following figure displays the Chargeback result. To find the total storage cost, the management server added the values in the Storage Cost column in the previous figure ($458.08 + $698.62). The management server then multiplied the percentage of ownership, which in this case was 100 percent for the Engineering department. The resulting ownership cost is displayed below.

IMPORTANT: You may have noticed a discrepancy in the following figure. When you look at the Total Storage Cost value in the table, you see many numbers after the decimal place. The management server lets you see the true value of the number without rounding. The management server does round the value for the total storage cost above the table, so that you can provide a realistic figure to upper-management. In the case of US currency, the total storage cost is rounded off to the penny.

Editing Percentage of Ownership

To remove the department ownership of an asset:

1.Access Chargeback Manager.

2.Click the link for the element in the right pane.

3.Click Asset-based under the Chargeback node in the tree.

4.Verify the option, "Step 2 - Assign Departmental Ownership Percentage" is displayed in the right pane.

Storage Essentials 5.00.01 User Guide 571