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Data Storage & Memory · Recorded milestone

RAID disk arrays

Recorded year1987

Cheap disks combined in arrays become fast and fault-tolerant storage.

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Built on

Hard disk driveRecorded · 1956enables
MicroprocessorRecorded · 1971requires
Personal computerRecorded · 1975requires

Led to

Big-data processingRecorded · 2006enables

Sources & evidence

Additional source

Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.