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July 11th, 2011 05:00

Determining random or sequential IO


Is there any way of determining whether the IO is sequential or random? I cant see any metrics to view this. I know on vmware I am able to run vscsistats but what about for physical Windows servers?



July 12th, 2011 06:00

Hi, Oli.  There are no generic tools available within Windows to determine this, but

we do have a software application called StoragePro which can be used to model

your access patterns with pretty high degree of precision.  If the load is fairly stable,

over time (i.e. not changing from random -> sequential -> random), and there is a

fair load on the storage subsystem (i.e. it's not at idle most of the time) then you can

get a good idea.

If you are interested in pursuing this, I would encourage you to get in touch with Marty

Campbell in our Sales group.  She can get you started in the right direction.  Her e-mail

is, and she can be reached at 757-645-9121.


-Jon Bentley, VP/CTO, Ethos Info, Inc.

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