The PCMark 10 Data Drive Benchmark has been designed to test drives that are used for storing files rather than applications. You can also use this test with NAS drives, USB sticks, memory cards, and other external storage devices. The Data Drive Benchmark uses 3 traces, running 3 passes with each trace.
Trace 1. Copying 339 JPEG files, 2.37 GB in total, in to the target drive (write test).
Trace 2. Making a copy of the JPEG files (read-write test).
Trace 3. Copying the JPEG files to another drive (read test).
The Crucial X9 Pro does pretty well in PCMark 10 Data Drive Benchmark. It sits in the top 10 drives for the Read-Write and Read tests but the Write test isn't quite as good with the drive sitting in a mid-table position but it still sits in the top 10 overall bandwidth chart with a figure of 203MB/s.