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SCSI Interface
What is SCSI Interface? Describe.
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There is a lot of disagreement about SCSI. It is theoretically faster if you are using multiple drives and a system that can take advantage of it. For the most part it is the interface of choice for high-end users.
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Thanks brosenb0. I need an answer like that only.
There are few different versions around at the moment.
SCSI-1: Originally included sync. and async. data transfers at 5Mb/sec for 8-bit, and allows up to 8 devices on the same SCSI chain. Each device is assigned with 1 ID starts from 0. Usual market standard is to have bootable device to be assigned as ID0 and ID1 and the host adaptor itself is ID7. The SCSI chain must be properly terminated on both ends to avoid signal bouncing.
SCSI-2: Improved version and allows transfer rate at 10Mb/sec for 8-bit, 20Mb/sec for 16-bit and 40Mb/sec for 32-bit. This version also adds the smaller 50-pin high-density micro-D connector and recommends to have active terminators to be installed on the chain. SCSI-2 is backward compatible with SCSI-1.
SCSI-3: Another improved version and allows transfer rate at 20Mb/sec for 8-bit, 40Mb/sec for 16-bit and 80Mb/sec for 32-bit. This version introduces an enhancement over Parallel SCSI called UltraSCSI and doubles the throughput. A single channel can have 15 devices joined together and some adaptor can even have multiple channel capability.
Hope it helps!