{"id":"freeing-space.why-are-there-two-scales-on-the-chart","url":"/faq/freeing-space/why-are-there-two-scales-on-the-chart","category":{"id":"freeing-space","title":"Freeing up space"},"subcategory":{"id":"profile-and-charts","title":"Storage Profile, charts and Home"},"question":"Why does the storage chart have two different scales?","alt_questions":["Dual axis storage chart","Internal and external drive on one chart","Why don't the two lines share a scale?","Chart axis left and right","Two y axes Storage Studio"],"short_answer":"Your built-in and fast drives are often very different sizes, so each gets its own colour and scale; otherwise the smaller drive's changes would be flattened.","answer_markdown":"So both drives read clearly. Your built-in drive and your fast drive often differ a lot in size — say a small internal drive and a much larger external one — and on a single scale the smaller one would be flattened into a line along the bottom.\n\nEach drive gets its own colour and its own scale, so changes on either are easy to see. Hover a point to read the exact value. See [What do the storage charts show?](/faq/freeing-space/what-are-the-storage-charts)","answer_html":"

So both drives read clearly. Your built-in drive and your fast drive often differ a lot in size — say a small internal drive and a much larger external one — and on a single scale the smaller one would be flattened into a line along the bottom.

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Each drive gets its own colour and its own scale, so changes on either are easy to see. Hover a point to read the exact value. See What do the storage charts show?

","answer_text":"So both drives read clearly. Your built-in drive and your fast drive often differ a lot in size — say a small internal drive and a much larger external one — and on a single scale the smaller one would be flattened into a line along the bottom.\n\nEach drive gets its own colour and its own scale, so changes on either are easy to see. Hover a point to read the exact value. See What do the storage charts show?","tags":["charts","dual axis"],"related":[{"id":"freeing-space.what-are-the-storage-charts","question":"What do Storage Studio's storage charts show?","url":"/faq/freeing-space/what-are-the-storage-charts"},{"id":"freeing-space.how-do-i-zoom-the-storage-chart","question":"How do I zoom into a period on the storage chart?","url":"/faq/freeing-space/how-do-i-zoom-the-storage-chart"}],"applies_to":"all","last_reviewed":"2026-10-01","title":"Why does the storage chart have two different scales? — Storage Studio FAQ","description":"Your built-in and fast drives are often very different sizes, so each gets its own colour and scale; otherwise the smaller drive's changes would be flattened.","crumbs":[{"name":"Home","path":"/"},{"name":"FAQ","path":"/faq/"},{"name":"Freeing up space","path":"/faq/freeing-space/"},{"name":"Why does the storage chart have two different scales?","path":"/faq/freeing-space/why-are-there-two-scales-on-the-chart"}],"jsonld":{"@context":"https://schema.org","@type":"FAQPage","url":"https://storagestudio.us/faq/freeing-space/why-are-there-two-scales-on-the-chart","inLanguage":"en","dateModified":"2026-10-01","mainEntity":[{"@type":"Question","name":"Why does the storage chart have two different scales?","alternateName":["Dual axis storage chart","Internal and external drive on one chart","Why don't the two lines share a scale?","Chart axis left and right","Two y axes Storage Studio"],"acceptedAnswer":{"@type":"Answer","text":"So both drives read clearly. Your built-in drive and your fast drive often differ a lot in size — say a small internal drive and a much larger external one — and on a single scale the smaller one would be flattened into a line along the bottom.\n\nEach drive gets its own colour and its own scale, so changes on either are easy to see. Hover a point to read the exact value. See What do the storage charts show?","url":"https://storagestudio.us/faq/freeing-space/why-are-there-two-scales-on-the-chart"}}]},"fragment":"
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Freeing up space · Storage Profile, charts and Home

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Why does the storage chart have two different scales?

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Short answer: Your built-in and fast drives are often very different sizes, so each gets its own colour and scale; otherwise the smaller drive's changes would be flattened.

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So both drives read clearly. Your built-in drive and your fast drive often differ a lot in size — say a small internal drive and a much larger external one — and on a single scale the smaller one would be flattened into a line along the bottom.

\n

Each drive gets its own colour and its own scale, so changes on either are easy to see. Hover a point to read the exact value. See What do the storage charts show?

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Last reviewed

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Related questions

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