SSD Performance Real World File Copy Tests

SSD Performance

In this round of benchmarks, we start off with our real-world file copy tests. Currently, certain controllers benefit from compressed files, while others don't. Certain storage units hate small files, others work well with them. So it only makes sense to do some manual tests on that.

File Copy

The most basic and simple test anyone can perform. We drop a 100 GB compressed file onto the SSD. That write number will fluctuate a bit here and there during the writing process. Let's have a peek:

You can see as long as the buffer(s) can keep up, ~1.8 GB/sec sustained writes. Now the problem you can observe as presented here, it no DRAM cache, after 20 GB the cache runs dry and the pSLC cache can't keep up. You'll drop to regular SATA3 SSD performance levels.

Copying the 100 GB file towards a client drive is good, but here the SSD runs into a TLC write or buffer issue as you can see on the client SSD. That has nothing to do with this SSD. So this is good.