Monitor MB/s Disk IO Usage/Bandwidth - Use iostat from the sysstat Package
The binary "iostat" comes from the package "sysstat" and is available on all Linux/Unix like platforms.
Use the "-m" option to give you what you probably want, which is to see in MB/s how much bandwidth each disk is doing.
iostat -m
Linux 2.6.24.2 ((none)) 04/16/10
avg-cpu: %user %nice %system %iowait %steal %idle
0.08 0.00 3.45 18.64 0.00 77.83
Device: tps MB_read/s MB_wrtn/s MB_read MB_wrtn
sda 430.19 26.80 0.00 149821 5
sdb 78.96 0.00 29.53 8 165085
sdc 0.08 0.00 0.00 2 27
Tags:
mb, disk, io, usage, bandwidth, iostat, sysstat, packagethe, binary, quot, linux, unix, platforms, avg, cpu, user, iowait, idle, tps, mb_read, mb_wrtn, sda, sdb, sdc,