Electronics calculator
What NAS Storage Size Do I Need?
Find nas raw storage requirement from current data size, annual data growth, and planning horizon years.
Enter your measurements
The key to what nas storage size do i need is having the right measurements: current data size, annual data growth, and planning horizon years. This minimum-capacity calculation uses them to return nas raw storage requirement in a form you can compare directly.
- Current data size — Required
- Annual data growth — Required
- Planning horizon years — Required
- Number of retained copies — Required
- Usable-capacity overhead fraction — Required
NAS raw storage requirement
Enter the measurements above to calculate nas raw storage requirement.
How the calculation works
Behind the calculator, the rule is rawNeed=(currentData+annualGrowth×years)×backupCopies; requiredRaw=rawNeed/(1-raidOverhead). That rule maps directly to the displayed nas raw storage requirement.
Worked example
Example: Current data size = 500 GB; Annual data growth = 500 GB; Planning horizon years = 2; Number of retained copies = 2; Usable-capacity overhead fraction = 20%. Result: Required Raw = 3750 GB; Raw Need = 3000 GB.
Before you decide
Recheck the limiting measurement before purchase or installation. This page calculates the stated geometry or quantity only; product-specific construction or installation details can still affect the final choice. For what nas storage size do i need, the limiting result on this page is nas raw storage requirement.
Direct measurement/geometry calculation. No external reference is required for the arithmetic itself; the result is derived only from the user-entered measurements and the formula stored in calculationLogicJson.
Frequently asked questions
What does the NAS Storage Size calculator tell me?
It returns nas raw storage requirement from the measurements entered on this page. The calculation is specific to nas storage size, so the result should be compared with the exact product or specification you are considering.
Which measurements should I take for nas storage size?
Measure current data size, annual data growth, planning horizon years, number of retained copies, usable-capacity overhead fraction. Use clear, usable dimensions rather than nominal room or product labels.
Should I round the nas raw storage requirement?
Keep the calculated value for comparison, then choose a real product that meets or stays within the returned nas raw storage requirement while allowing for the clearances, tolerances or ratings shown by its manufacturer.