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ESDI

Author: Gabriel Torres Last Updated: October 15, 2005 Category: Storage Enhanced Small Device Interface Hard disk drive standard created in mid-1980’s by a consortium of manufacturers leaded by Maxtor. The idea was to create a hard disk standard more reliable than ST-506. ESDI hard disk drives had a certain level of control embedded on the hard drive itself. The main problem was that this standard continued to have a controller board outside the hard disk drive, not solving the biggest issue regarding ST-506 standard. Since IDE standard was created around the same time and on IDE hard disk drives the controller board was embedded on the drive logic board, it was a far better solution than ESDI standard. Its cable system is equal to ST-506: it uses a 34-wire flat cable for data and a 20-wire flat cable for control. The maximum transfer rate of this standard was 24 Mbps (megabit per second) or 3 MB/s. This standard wasn’t widely used. Related Terms: HD IDE ST-506 Related Links: http://www.pcguide.com/ref/hdd/if/obsoESDI-c.html Print Version | Send to Friend | Bookmark this Term

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