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What is SCSI? |
Stands for "Small Computer System Interface," and is pronounced "scuzzy." SCSI is a computer interface that can be used to attach devices like hard drives and scanners to your computer. You can connect up to seven devices to a SCSI interface and still get good performance from all of them. SCSI can support faster data transfer rates than the other popular storage interface, IDE. For more information on the differences between SCSI and IDE, please check the Help Center.
The different types of SCSI interfaces are listed below:
SCSI-1: Uses an 8-bit bus, supports data transfer speeds of 4 MBps.
SCSI-2: Uses a 50-pin connector instead of a 25-pin connector, and supports multiple devices. It is currently the most common type of SCSI. Data transfer speeds are typically around 5 MBps.
Wide SCSI: Uses a wider cable (168 cable lines to 68 pins) to support 16-bit data transfers.
Fast SCSI: Uses an 8-bit bus, but doubles the clock rate to support data transfer speeds of 10 MBps.
Fast Wide SCSI: Uses a 16-bit bus and supports data transfer speeds of 20 MBps.
Ultra SCSI: Uses an 8-bit bus, supports data rates of 20 MBps.
SCSI-3: Uses a 16-bit bus, supports data rates of 40 MBps. Also called Ultra Wide SCSI.
Ultra2 SCSI: Uses an 8-bit bus, supports data transfer speeds of 40 MBps.
Wide Ultra2 SCSI: Uses a 16-bit bus, supports data transfer speeds of 80 MBps. |
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