Disk Input/Output per Second.

[Gulam Mohiuddin]

I want to know the disk acitivity on the system in terms of total Bytes read/write per second.

We want to by some remote storage hardware and the vendor have asked us what is our load on disk IOs to figure out the data transfer rate from the System to the remote storage device.This will also help us to decide the communication medium which will connect both the hardwares.

Thanks,

[Rick Garland]

sar -d can provide the info.

[Manju Kampli]

as said above the simple way to start collecting the disk activity information is using "sar -d" command.

The same kind of information can be collected by products like GlancePlus, measureware as well. these above two products are priced products and are known to give more accurate resulsts when compared to sar

[James R. Ferguson]

Hi:

While sar is the classic, Glance is a tool well worth having. Glance metrics can be viewed for the physical disk, for the volume group and/or for the filesystems. Although Glance is a charagable, licensed product, a trial version is available for 30-days (?) use on your application CD.

...JRF...

[James R. Ferguson]

Hi:

Forgot to add 'iostat'. See man iostat. This gives the KB/second and the number of seeks/second. Statistics are reported for all disks on the system.

...JRF...