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Appendix
This appendix briefly outlines how SRM can influence cost avoidance in storage-related purchases. It is very simplified and uses Scenario 1 (Corporation W) as a working model. For the calculations in this scenario, disk storage, and resource-hour costs to support a storage infrastructure are estimated as follows:
Disk storage is a fully burdened cost, including: the maintenance, backup, physical plant resources, and supporting hardware. The cost in this scenario is $0.30 per Mbyte.
Fully loaded cost of a system-storage administrator is $100 per hour.
Furthermore, we assume that costs related to the purchase and implementation of an SRM system are factored into the cost-avoidance calculations for this scenario.
In this scenario, plans for storage capacity are based on high-level estimates of historical capacity expansions for enterprise storage at 100% annually. Based on the SRM data from the storage discovery and capacity planning phases, the goals for the next year are significantly changed from a 100% increase in capacity to a more accurate 48% increase. This adjustment reduces expansion by 42%.
TABLE 8 SRM Cost Avoidance Table
|
Item |
Estimated Costs Without SRM |
Estimated Costs With SRM |
|
Disk |
12 Tbytes *0.03 = $3,600,000.00 |
6 Tbytes *0.30 = $1,800,000.00 |
|
SRM |
No associated costs |
SRM system = $500,000.00 |
|
SRM implementation |
No associated costs |
Resource hours = $10,000.00 |
|
Total project costs |
$3,600,000.00 |
$2,310,000.00 |
|
|
|
|
|
Costs avoided through SRM |
$1,290,000.00 |
|