ENHANCED SMALL DISK INTERFACE
\ɛnhˈanst smˈɔːl dˈɪsk ˈɪntəfˌe͡ɪs], \ɛnhˈanst smˈɔːl dˈɪsk ˈɪntəfˌeɪs], \ɛ_n_h_ˈa_n_s_t s_m_ˈɔː_l d_ˈɪ_s_k ˈɪ_n_t_ə_f_ˌeɪ_s]\
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(ESDI) An obsolete hard diskcontroller standard, first introduced by Maxtor in 1983,and intended to be the successor to the originalST-506/ST-412. ESDI was faster and more reliable, butstill could not compete with IDE and SCSI.EDSI used two cables: a 20-pin data cable to each drive and asingle 34-pin control cable daisy chain with the controllerat one end and a terminator at the other. In PCs, itsupported up to two drives at 1-2MB/s with drives up to 2GB.PC Guide(http://pcguide.com/ref/hdd/if/obsoESDI-c.html).
By Denis Howe
