|1961||IBM Stretch Storage Subsystem|
|First fault tolerant storage subsystem, 40 bit parallel transfer, used 7 bit error correcting code (ECC) to correct failures. |
This type of fault tolerance is later called RAID 2.
Why it's important
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The IBM Stretch Storage Subsystem consisted of the IBM 7612 Disk Synchronizer, 354 Disk Control Unit & 353 Disk File.
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