Update on the 4TB MP34 I got a little over a week ago.
I went to copy about 17GB of data from the drive over to my server (connected over a 10Gb link) and saw only about 200MB/s. That seemed weird, as it was 17GB of archive files.
So I went ahead and copied the data to my boot drive, and I saw the same speeds. Copying it from my boot drive, the speed fluctuated between 400 and 800MB/s. That's more in line with what I expect from my server.
I ran some more tests by copying large files to my boot drive from the MP34, and...
View attachment 328628
That's... really bad for an NVMe SSD. Slow write speeds are one thing, but slow reads? This is a single 14GB .tar file.
For comparison, here's a 14GB archive being copied from a WD SN570 in a USB enclosure to my boot drive over USB 3.2...
View attachment 328629
That's a backup of my Steam copy; don't worry.
I've monitored the drive while playing games, and the read speeds never seemed to go above 300MB/s, but I figured maybe games didn't need all that bandwidth.
It's really weird; this drive is like the opposite of that QLC one I had a while ago. This one does great on sustained writes, and fails miserably at sustained reads.
I guess my hatred of QLC NAND may be slightly misguided, though I'm not sure the NAND (128-layer Hynix V6) is at fault here. I had the drive spit out a bunch of WHEA errors and soft-lock my system yesterday, so I wonder if the Realtek controller is just garbage.
Anyway, I'm thinking I'll be returning this drive and once again going back to my sketchy RAID-0 array.
I really wish the SSD industry wasn't a steaming pile of garbage.
Now I just gotta wait for SSD prices to return to sane levels and get another 4TB drive to be disappointed with.