1.1. Current Mass Storage Architectures
Current architectures (data transfer protocols) have three major problems:
Limited speed
Limited distance between devices
Limited number of devices supported
Figure 1-1. Current Limitations
For example, the small Computer System Interface (SCSI) parallel interface is restricted to:
the bus being no longer than 25 meters
32 SCSI devices per bus
a double cable system
In today’s modern computer system environments, these restrictions are very limiting to design and confining in space, and it gets worse. The two-byte wide SCSI P-cable limits configurations to 16 devices.
The single-ended SCSI protocol is limited ...
Get Fibre Channel for Mass Storage now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.