Radoslaw, That's not necessarily true. If you are using something other than the DS8K storage from IBM you will probably see an improvement in single channel throughput because the bottleneck on the channel is at the host end, rather than the storage port. There will also be an advantage for where many ports and storage controllers share the up-line channel from switch to Host (remember daisy chains).
There a section that describes the improvement of the 8Gb channel with 2Gb and 4Gb storage adapters. There must have been a way to measure that performance :-) IBM generally do their Host channel numbers by daisy chaining a couple of DS8K on the channel so the measurement is at the host and not bottlenecked at the storage. Ron > > Last but not least: > - you don't need the channels if you don't have 8Gbps on the other end > of cable. I mean CU or switch for shared channels (rather theoretical > scenario - fully loade channel and multiple CUs connected). ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
