Further to my previous post on viostat , Dan Braden (from IBM ATS) provided me with one of his new presentations; Monitoring, Measuring Bandwidth And Tuning SAN Storage From AIX . In this document Dan presents several ways for monitoring virtual FC adapter usage statistics.   https://www.ibm.com/developerworks/community/blogs/cgaix/resource/MonitoringMeasuringBandwidthAndTuningSANStorageFromAIX2.zip   “ Hi Chris,   I just saw your article in your blog on the subject. There are 3 ways to look at real FC adapter thruput that... [More]