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Disk

A Disk chart is a capacity indicator. It shows used vs total as a percent-full ring.

A Disk chart is a capacity indicator. It shows how much of something has been used compared to how much is available.

It always answers one question:

“How full is this?”

What a Disk chart shows

A Disk chart displays:

used ÷ total → percentage

The chart is drawn as a ring:

  • Filled area: used portion

  • Empty area: remaining portion

  • Center number: percent used

Example Disk chart showing percent used as a ring
Disk chart (capacity indicator)

Configure a Disk chart

Disk charts are designed for bounded metrics. They assume you have two numbers:

  • Used

  • Total

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Key rules:

  • Disk charts use a bounded metric (a value with a max).

  • The chart computes: (used / total) × 100.

  • Ensure total > 0 to avoid invalid percentages.

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