SCSI VS FC Transfer rate

[estech25]

What is the maximum possible transmission rate with traditional parallel SCSI? I have seen transfer rates of up to 320 MB/s. Then why is FC only capable of delivering 200 MB/s on its 2Gb/s technology?

 

[p5wizard]

SCSI is parallel:
UltraSCSI 320 is 16 bits wide at 160MHz: 320MB/s

FC is serial:
2Gb/s is 1 bit at 2GHz - approx 200MB/s (needs about 10 bits to transfer 1 byte)

HTH,

p5wizard

 

[millsra]

Alot of your transfer rate is dependent on the HBA you use and the buffer size and how many hosts you have connected to the Fiber port. You have to remember that the fiber port may be capable of 2GB/s but that has to be divided between all of the hosts that are connected to that fiber port. Also you have to have the right HBA to take advantage of it. There are both 64 bit and 32 bit HBA's. Buffer sizes in the HBA will also effect the transfer rate they are "ACTUALLY" able to handle.


Ray.