RAID capacity
RAID capacity lets you estimate model RAID capacity from level, disk count, size, and spares in your browser.
Backup storage estimate
Backup storage estimate lets you estimate backup storage from fulls, incrementals, retention, change, and compression in your browser.
Backup storage estimate
⌂ 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
Set source size, full/incremental intervals, change rate, retention model, compression, and copies.
Restoring an incremental backup can require a full backup and earlier increments. Inspect dependencies outside the nominal retention window rather than counting only recent files. Recovery testing and compression measurements remain separate tasks.
Examples
100Principles 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 transfer time
Data transfer time lets you estimate transfer time from size, link rate, and efficiency with the formula shown in your browser.