A ScaleIO cluster has been configured with 10 nodes running only SDS, 20 nodes running only SDC, and one storage pool with all devices. Each SDS contributes four HDD devices to the storage pool. Each server has one 10 Gb network interface. The I/O workload is random access with a 4 Kbyte block size. What is a limiting factor for IOPs?
A) Number of HDD devices
B) Number of SDS nodes
C) Number of SDC nodes
D) Available network bandwidth

Question

Quizplus · Accepted Answer

The number of HDD devices is the limiting factor for IOPs because each HDD has a limited number of IOPS it can handle, and the total IOPS capacity is determined by the aggregate IOPS of all HDDs in the system.

A ScaleIO Cluster Has Been Configured with 10 Nodes Running