Enhanced Small Disk Interface
<storage, hardware> (ESDI) An obsolete hard disk controller standard,
first introduced by Maxtor in 1983, and intended to be the successor to the
original ST-506/ST-412. ESDI was faster and more reliable, but still could not
compete with IDE and SCSI.
EDSI used two cables: a 20-pin data cable to each drive and a single 34-pin
control cable daisy chain with the controller at one end and a terminator at the
other. In PCs, it supported up to two drives at 1-2MB/s with drives up to 2GB.
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