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THE FEUTEX TOOLKIT

Incremental Backup Chain Size

Budget one full backup plus fixed-size daily changed blocks.

Computer Systems workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaRaw chain size = full*(1+change/100*days); Stored chain size = full*(1+change/100*days)*ratio

Made for real tasks

  • Budget one full backup plus fixed-size daily changed blocks.
Explore step-by-step workflows →

Worked example

Inputs

Full backup size
1000 GB
Daily changed blocks
3 %
Incremental backups retained
6 backups
Stored to raw ratio
0.6 ratio

Expected results

Raw chain size
1180 GB
Stored chain size
708 GB

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter full backup size, daily changed blocks, incremental backups retained, stored to raw ratio in the displayed units.
  2. Calculate the scenario, then compare it with measurements before changing a system.

Try this example

{
  "full": 1000,
  "change": 3,
  "days": 6,
  "ratio": 0.6
}

Accuracy and scope

Fixed source size and repeated changes stored each day; excludes metadata and deduplication between increments.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.