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Question about VMDK read/write requests (IOPS?)

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Hi,

 

I see the following metrics under "Virtual Disk" at the VM level

 

Average read requests per second

Average write requests per second

 

They are defined on the VMWare docs as follows:

 

Average read requests per second: Average number of read commands issued per second to the virtual disk during the collection interval.

Average write requests per second: Average number of write commands issued per second to the virtual disk during the collection interval.

 

What are these metrics exactly?

are they read and write IOPS?

 

and what does it mean when the numbers (i.e average) show "Zero" for a VMDK over a specific period of time? does that mean there has been not been any read/write reqiests (or IOPS?).


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