RAID 0 Capacity Calculator
Calculate total usable capacity and performance of a RAID 0 striped array.
About RAID 0 Capacity Calculator
RAID 0 stripes data across all disks with no parity or mirroring, so 100% of the raw capacity is usable. While this maximizes storage efficiency and sequential throughput, it provides zero fault tolerance — any single disk failure results in total data loss across the entire array.
Formula
RAID 0 usable capacity
usable = n × disk_size
- n
- number of disks
- S
- capacity per disk
Worked example
With the default values below, RAID 0 Capacity Calculator returns Usable Capacity of 8,000.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Number of Disksminimum 2
- 4
- Size per Diskminimum 0.001 GB
- 2,000 GB
Results
- Usable Capacity
- 8,000.00 GB
- Raw Capacity
- 8,000.00 GB
- Redundancy Overhead
- 0.00 GB
- Storage Efficiency
- 100.00%
- Fault Tolerance
- None — any single disk failure destroys all data
Step by step
- 1Disk count (n)= 4
- 2Disk size= 2000 GB
- 3RAID 0 usable capacity= 8000 GB
- 4Storage efficiency= 100%
Assumptions and limits
- The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
When should I use RAID 0?
RAID 0 is suitable for scratch/temp data, caches, or workloads where performance matters and the data is easily recreatable — never for data you cannot afford to lose.
Does RAID 0 improve performance?
Yes. Read and write throughput scales roughly linearly with disk count because I/O is spread across all members simultaneously, making it the fastest RAID level for sequential workloads.