13 Facts About SCSI connector

SCSI connector is used to connect computer parts that use a system called SCSI to communicate with each other.

Serial SCSI added another three transport types, each with one or more connector types.

Many SCSI connector designations consist of an abbreviation for the SCSI connector family, followed by a number indicating the number of pins.

Parallel SCSI connector allows for attachment of up to 8 devices or 16 devices to the SCSI connector bus.

Early generations of SCSI hard drive assemblies generally had two connectors.

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The power SCSI connector was typically the same 4-pin female Molex SCSI connector used in many other internal computer devices.

For example, in the Sun 260 series chassis, the SCSI connector was the same 3-row 96-pin SCSI connector used to attach peripheral cards to the VMEbus backplane.

Sun Microsystems and Data General used a 50-pin 3-row DD-50 SCSI connector, which was sometimes incorrectly called a "DB-50" or "HDB-50".

IBM's early RS6000 workstations sometimes used a "High Density Centronics" SCSI connector, which was a Centronics-style SCSI connector with smaller pins and shell.

Wide SCSI-2, the most common connector was the larger sibling of the MD50, known as the MD68, HD68, MiniD68, or HPDB68.

Many manufacturers have devised systems in which a SCSI connector disk drive or other device was placed in a small "caddy" container, which carried connections for both power and data.

Some systems allowed for hot swap, while others allowed "warm swap", in which the SCSI connector bus was "quiesced" but remained powered on with devices ready.

Situation is fundamentally similar to that of Parallel SCSI drive caddies; there have been a range of manufacturers, and the caddies themselves contain a generic device which can be removed and replaced.