IOPS versus Throughput

Question

1. What is the key difference between IOPS and Throughput in large data storage?
2. Does file size have an effect on IOPS? Why?

Answer 1

IOPS - Number of read write operations mostly useful for OLTP transactions used in AWS for DBs like Cassandra.

Throughput - Is the number of bit transferred per sec. i.e.data transferred per sec. Mainly a unit for high data transfer applications like big data hadoop,kafka streaming