Random Read Performance
Smaller block sizes often associated with random data make more calls to the translation map. This data feels the full impact of not having the map cached in a high-speed module. The 2TB shows very low QD1 random read performance. This is around half of what we like to see with modern SSDs.
Random Write Performance
The random write performance is also low for SSDs but the SLC cache on the flash works to keep the small burst writes very high compared to hard disk drives.