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In a DAS environment each server has a dedicated storage array and backup device, each of which is specified with excess capacity for growth. Actual data stored generally equals 35%-50% of Storage Capacity.

Industry studies show that 30% - 45% is average for DAS Environment. 50% is seldom reached.

30% is an industry minimum with high growth systems realizing 100% growth.

Assumption: Using 146gb drives @ $600 each.

10 Drives = $6000

Enclosure = $3500

RAID Card & Cable = $1500

Total = $11,000

Avail. Space = 1,168gb

Cost/Gig = $9.42

Got a Quote or an estimate or even an idea of what you need to invest. Plug it into the yellow box.

Cost avoidance realized by utilizing current installed disk space.

Represents the effective capacity realized with SAN environment. Industry studies show average utilization at 80% - 90%. (Used 85%)

Remaining Storage Installed in current environment that is available for future growth. Represents amount of data that can be added without purchase of additional disks.

Total Cost avoidance available in first two years. Assumes conversion to SAN.

Required for Expansion times price / gb (Q4.)

Second year look at cost of DAS environment. Based on Q1 - Q4.

Wasted capacity times price / gb (Q4.)

Cost of aditional storage based on DAS requirements. projection.1-year

Total storage required to support projected data requirements 12 months out.

Current environment times growth rate in Q3.

Overhead required by DAS environment. Industry average = 55% - 70%.

Utilization % (Q2.) times current capacity. (Q1.)

Total storage installed

Current Storage entry - Q1. From above.

Move your mouse over the asterisk to see more detailed information

Customer Input

Q1. What is your Current Total Storage Capacity (Gb)

Q2.What is your Current Effective Utilization (%)

Q3.What is the Annual Storage Capacity Growth Rate (%)

Q4. What is the Average Price/Gb Paid for Storage ($)

Existing Total Capacity (Raw)

Current Data Stored (Utilized Capacity)

Current Capacity Overhead

Data Growth Projected Per Year

Additional Raw Storage to Accommodate Growth

Projected Total Raw Storage (12-Month Look Ahead)

1st Year Equipment Cost (DAS Environment)

2nd Year Equipment Cost (DAS Environment)

2 Year Total Avoided to Meet DAS Requirements

Existing Capacity (Raw)

Effective Capacity with SAN

Current Capacity Available for Growth

Months of Growth in Reserve (Months Before First Disk Purchase)

Months

Value of Available Storage

Approximate Disk Purchase Savings by First Need

The ROI Box

Estimated Cost of Equipment to Convert to SAN

Return for every Dollar Spent

Note: Industry studies show that Storage Utilization (Calculated on this page) is the second largest savings in a SAN environment. The largest savings over time comes from labor with storage administration cost reductions from 25% to 70%.