HBA 'speed'

[Stephan]

Hi all.

I remember reading something about 2gb HBAs producing about 175mb/s tops...
What about 4gb HBAs? Are we talking double the mb/s? In know, it all depends on the backbone of the cards, but generally? About 300-350mb/s or is that far fetched?

Thanks.

 

[rankink]

I know that I see higher numbers than 175MBps out of most of my QLogic 2Gbps HBA's.

I will say that I haven't fully saturated any of my 4Gbps QLogic 2462's.

 

[BBB]

I've gotten 391MB/sec out of a 4GB HBA, that was with an ideal (large sequential) IO workload though. 2GB I've gotten to about 190MB/sec. Results will vary depending on your OS, your driver type (eg storport vs scsi port in windows), switches, and end device though.

 

[[email protected]]

HBA Speed

As per my experience the comment is true.

/Neelakanta

I've gotten 391MB/sec out of a 4GB HBA, that was with an ideal (large sequential) IO workload though. 2GB I've gotten to about 190MB/sec. Results will vary depending on your OS, your driver type (eg storport vs scsi port in windows), switches, and end device though.