Industry Data and Assumptions

NetApp’s Small and Midsize Business Storage TCO Calculator is designed to help customers see how a NetApp solution can lower the cost of storage and increase the efficiency of their shared IT environment. The Calculator helps you:

Below are technical and business assumptions based on industry averages. The calculator fields are pre-populated with those averages. However, you can adjust figures to reflect your specific systems and needs.

Yearly cost of storage administrator: $0  
Annual storage software cost reductions: 35  %
Annual storage cost reductions: 35  %
Power cost reduction/GB: 30  %
Space cost reduction/GB: 33  %
Other budget percentage: 10  %
Discount rate for NPV: 5  %
Annual staff cost increase: 3  %
Change/day for replicated data: 1  %
Average age of installed arrays: 4.7  years
Depreciation period in years: 4  
Peak to average ratio: 2.5  
Recovery point objective (RPO) in hours: 12  
DR Cost of Communication/Gb/Mile/Month: $0  
Miles to DR site: 200  miles
Includes Power, Cooling & Space: Y  
Includes DR Savings: Y  
Storage Tier Definitions & Assumptions Hardware Cost
(Cost/TB)
Hardware
Maintenance (%)
Software Cost
(Cost/TB)
Software Maintenance (%)
Tier 1 - Mission Critical Storage (Gold) $0 20% $0 20%
Tier 2 - Business Critical Storage (Silver) $0 20% $0 20%
Tier 3 - File/Print Storage (Bronze) $0 20% $0 20%
Tier 4 - Archive Storage $0 20% $0 20%
Storage Tier Definitions & Assumptions Power Cost
(Cost/TB/Year)
Space Cost
(Cost/TB/Year)
Location Virtualized
Tier 1 - Mission Critical Storage (Gold) $0 $0 Main Site Y
Tier 2 - Business Critical Storage (Silver) $0 $0 Remote Site N
Tier 3 - File/Print Storage (Bronze) $0 $0 Main Site N
Tier 4 - Archive Storage $0 $0 Main Site N

Areas Modeled by Tool and General Definitions

Storage Efficiency

Pooling and provisioning of storage using techniques such as thin provisioning allows for much better utilization of storage, both for existing storage and for new storage.

Storage Consolidation

How much does the client pay for tier 1, 2, 3 and possibly tier 4. Tier 1 storage always costs more than others. The storage consolidation capabilities of NetApp allow a reduction in cost of the storage used.

Rapid Application Recovery

The Rapid Application section is all about the cost of downtime and the ability to turn downtime back into productive time. Application downtime is calculated as duration of outage in hours x number of employees impacted x Hourly FTE expense. Any improvement has an economic benefit.

Cost effective disaster recovery

A lower cost DR infrastructure with fewer cost elements and less expensive recurring costs (i.e. less bandwidth to rent/lease, less downtime and more rapid recovery)

* Source : Wikibon