How to Monitor Disk IO on AIX

For monitoring specific disk (e.g. disk24), you can just use iostat to report the activities every 10 seconds.
# iostat -d disk24 10
...
Disks:        % tm_act     Kbps      tps    Kb_read   Kb_wrtn
disk24          74.1     113663.9     234.8    1137776         0
disk24          50.6     77549.6     164.1     775496         0
disk24          24.8     38189.1      74.8     381700         0
disk24          72.9     113347.1     235.2    1132904         0
disk24          76.0     109607.2     219.0    1096072         0
...
You can see the read/write traffic on disk24 by this command, it will report the disk status indefinitely until you interrupt the monitoring by Ctrl + C.

For monitoring all disks with displaying 5 reports totally, every 10 seconds interval. You can do this:
# iostat -d 10 5
But you may lost in the jungle of disks.