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I am not able to understand the Disk IOPS showing huge numbers

I am not able to understand the Disk IOPS showing huge numbers

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I am looking at aggregate Disk IOPS shown in CM for DataNode.

 

Can anyone please help me understand the IOPS calculation w.r.t Cloudera. As below screeshot shows huge number of IOPS wherein 8 node cluster is setup. Slightly confused between disk (10K SATA provides max 170 IOPS), but in Cloudera Manager I see it shows 57k IOPS.

 

IOPS.png