| SCSI Guidebook, Adaptive Data Systems, Inc., Pomona, CA, 1985. |
....Protocol This section describes the SCSI protocol, used as the interface between the Interphase Jaguar HBAs and the Wren IV disks in RAID I. The SCSI (Small Computer System Interface) Protocol allows up to eight devices to communicate on a bus or string at sustained speeds of 4 5 MBytes sec [SCSI]. Future SCSI performance will reach 10 20 MB sec on fast wide SCSI. Each device on the string can attain control of the bus as a master or initiator , or may be designated as a slave or target for the operation. In 6 RAID I, the host bus adaptors function as initiators at all times, and the ....
SCSI Guidebook, Adaptive Data Systems, Inc., Pomona, CA, 1985.
....of each component. serves as host processor and is attached over a VME backplane to four Interphase Jaguar Host Bus Adaptors (HBAs) Jaguar] Each Jaguar HBA or controller manages up to two strings of 5 1 4 Imprimis Wren IV disks [Wren] the HBA and disks communicate using the SCSI protocol [SCSI]. There are a total of seven SCSI strings, each with four disks attached for a total of 28 disks in the array. The Sprite Operating System [Oust88] a UNIX compatible operating system designed for networked workstations, runs on the Sun4 280. Figure 1 also shows the performance limits of each ....
SCSI Guidebook, Adaptive Data Systems, Inc., Pomona, CA, 1985.
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