storage: A revised version of the SCSI protocol that can handle 16 or 32 bits at a time. The result is a substantial increase in speed.
The successor to SCSI-1 as defined by ANSI - X3.131-1992. SCSI-2 is upward compatible from SCSI-1. SCSI-2 specification allows for faster transmission rates, a wider bus (up to 32-bit wide), increased device addressing, and improved functionality.
is a complete document with all the Physical and protocol layers. SCSI asynchronous commands with Synchronous data transfer rates up to Fast 10 megatransfers per second or 20 megabytes per second. Bipolar technology with Open collector or active negation single ended bus transceivers, passive or active termination, and Differential (Now called HVD – High Voltage differential) bus transceivers based on EIA 485 allowed in SCSI-2. The A connectors are the 50 pin low density internal connector, low density Centronics external connector and the High density external connector. Cable terms the SCSI-2 connector is the high density 50 pin. The B connectors for wide bus was not practical because it required a second cable 68 pin High density.
The Small Computer System Interface (ANSI document X3.131-1994).
An enhanced ANSI standard for SCSI (Small Computer System Interface) buses. Compared with the original SCSI standard (now called SCSI-1), which can transfer data 8 bits at a time at up to 5 MB per second, SCSI-2 offers increased data width, increased speed, or both. A SCSI-2 disk drive or host adapter can work with SCSI-1 equipment at the older equipment's maximum speed. See also Fast SCSI, Fast/Wide SCSI, SCSI, Wide SCSI.
An enhanced ANSI standard for SCSI standard for SCSI buses. It offers increased data width, increased speed, or both.
The second generation of SCSI; includes many improvements to SCSI-1, including Fast SCSI, Wide SCSI, and mandatory parity checking.
This version of SCSI originally came in two varieties: Fast-SCSI 2 and Fast-Wide SCSI 2. Recent extensions to the SCSI 2 specification include Ultra SCSI and Ultra2 SCSI. Ultra3 SCSI is now called Ultra 160M.
An updated version of the SCSI bus architecture. SCSI-2 describes the latest published ANSI standard (X3.131-1994) that prescribes several connectors (both shielded and unshielded) that include 1 byte wide data bus, defines FAST transfer speeds, defines SCSI protocol for wider data transfers, defines the parallel SCSI messages, and command structure. This provides the base on which future SCSI features are compared against. These enhancements, which include caching, command queuing and power management, increased its performance and flexibility.