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Configure and Customize Dell PowerFlex v3.6.x

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Optimize ESXi

To improve I/O concurrency, users may increase the per device queue length value on a per data store basis. Per device queue length is referred to as “No of outstanding IOs with competing worlds” in the display output.

Use the following command to increase the queue length;

esxcli storage core device set -d <DEVICE_ID> -O <Outstanding IOs>

where, <Outstanding IOs> can be a number ranging from 32-16384 (the default=32). We recommend increasing queue length to 256.

Example:

esxcli storage core device set -d eui.16bb852c56d3b93e3888003b00000000 -O 256

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