> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/server-usage/storage-engines/myisam-storage-engine.md).

# MyISAM

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[MyISAM Overview](/docs/server/server-usage/storage-engines/myisam-storage-engine/myisam-overview.md)
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A detailed overview of the MyISAM storage engine, including its file structure, features, and limitations compared to newer engines like Aria.
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[MyISAM Index Storage Space](/docs/server/server-usage/storage-engines/myisam-storage-engine/myisam-index-storage-space.md)
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This page explains how MyISAM stores and compresses indexes, detailing space usage for different key types and compression strategies.
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[MyISAM Storage Formats](/docs/server/server-usage/storage-engines/myisam-storage-engine/myisam-storage-formats.md)
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Learn about the three storage formats supported by MyISAM: FIXED (static), DYNAMIC (variable length), and COMPRESSED (read-only).
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[MyISAM System Variables](/docs/server/server-usage/storage-engines/myisam-storage-engine/myisam-system-variables.md)
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A reference for system variables that configure MyISAM behavior, such as key cache sizes, recovery modes, and concurrent insert settings.
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