Step-by-step instructions
- Enter or select Number of disks.
- Enter or select Disk size (TB).
- Tap Calculate.
- Review the result shown directly below the calculator.
RAID 5 Usable Capacity Calculator
Calculate RAID 5 usable capacity (N−1)×disk size.
How to use the RAID 5 Usable Capacity Calculator
Calculate RAID 5 usable capacity (N−1)×disk size.
What the inputs mean
- Number of disks
- Enter the value requested by this field label.
- Disk size (TB)
- Enter the value requested by this field label.
Formula or calculation method
The calculator applies the standard mathematical relationship for the labeled inputs and returns the computed result automatically.
Example
Try entering realistic values for Number of disks and Disk size (TB), then tap Calculate to see how the result changes.
How to understand the result
Use the result as an estimate based on the values you entered. For planning decisions, double-check that the input units and assumptions match your real situation.
Tip: Keep all values in compatible units and use values from the same time period when the calculator compares two amounts.