Backup storage estimate
Backup storage estimate lets you estimate backup storage from fulls, incrementals, retention, change, and compression in your browser.
RAID capacity
RAID capacity lets you estimate model RAID capacity from level, disk count, size, and spares in your browser.
RAID capacity
⌂ Inputs and results stay in this browser and are not automatically stored or sent.
Waiting for input
Input and conditions
Output
Waiting for input
Complete text result
How to use
Choose RAID level, disk count, per-disk size, and spares. Check minimum-count requirements after excluding spares.
The result is theoretical capacity for the stated equal-size model. It excludes filesystem overhead and real performance, and RAID does not replace a backup.
Examples
4Principles and limits
Each input is limited to 1,048,576 bytes, output to 33,554,432 bytes, and processing to 5,000 ms. Input is never silently truncated.
Guides
Related tools
Data unit converter
Data unit converter lets you convert bits, bytes, SI, IEC, capacity, and rate without conflating them in your browser.