We tested the 30TB Exos M with a number of scenarios that it may face in the real world. The settings for these scenarios are as follows.
File Server
512MB file size, 16KB Block size
80% Read 20% Write 100% Random
I/O queue depth 128
Web Server
1GB file size, 16KB Block size
100% Read 0% Write 100% Random
I/O queue depth 64
Database
2GB file size, 4KB Block size
90% Read 10% Write, 90% Random, 10% Sequential
I/O depth 128
Workstation
1GB file size, 16KB Block size
70% Read 30% Write, 100% Random, 0% Sequential
I/O depth 6
Web Server
Database
Workstation
Apart from the File Server test (where it's the fastest drive to date), the Exos M doesn't seem to handle the other workload tests that well.