Data migration checksum coverage calculator

Calculate verified volume and unverified volume with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use verified volume and unverified volume to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

JSON Partitions [ID,expected GB,checksum compared and matched flag 0/1]
[["A",100,1],["B",50,0],["C",150,1]]
Verified volume (GB)
250
Unverified volume (GB)
50
Verified volume fraction
0.833333
Unverified partition IDs
["B"]

Try another scenario

JSON Partitions [ID,expected GB,checksum compared and matched flag 0/1]
[["A",100,1],["B",50,1],["C",150,1]]
Verified volume (GB)
300
Unverified volume (GB)
0
Verified volume fraction
1
Unverified partition IDs
[]
Calculation method

Calculation method

Verified volume (GB)

sum(r[1] for r in a if r[2]==1)

Unverified volume (GB)

sum(r[1] for r in a if r[2]!=1)

Verified volume fraction

sum(r[1] for r in a if r[2]==1)/sum(r[1] for r in a)

Unverified partition IDs

J([r[0] for r in a if r[2]!=1])

Symbols and units
a
JSON Partitions [ID,expected GB,checksum compared and matched flag 0/1]

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Calculation steps and notation

sum(list) adds all entries in the list.

Assumptions & limits

Assumptions & limits

  • Coverage of supplied completed checksum comparisons, no file hashing or cryptographic correctness claim. Nonnegative partition volumes with positive total. Supported limits: All numeric inputs must be finite. Only the explicitly described mathematical scenario is supported.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Share this page
Share this calculator

Leave unchecked to share the page without your entered values.