I feel like the transfer rate should be a LOT faster than 20-30mb/s average moving one movie file from one SSD to another.
My boot drive and games are on NVME's.
Movies/TV shows on 1 SSD
Downloads go to a 2nd SSD
Installation apps/random stuff goes on the 3rd SSD.
That is a little slow. I can get transfer speeds of up to 2.00GB/s SSD to SSD on Samsung 1TB or 2TB drives.
Of course, the size of the file will make a difference. Many SSDs will not sustain the high speeds copying files that are, say, 20GB or bigger. But transfer speeds on my drives will average out at 200MB/s to 300MB/s or better on sustained writes on really large files.
If your drives are not well cooled they may be throttling. Which happens more often than one might think with NVMe SSDs
You don't say what brand/model drives you are using. You also don't say if the stuff other than boot and games are NVMe SSDs.
With SATA SSDs you are not going to get anywhere near the speeds of NVMe SSDs. Perhaps an average of 60-90MB/s, with some bursts over 100MB/s depending on the size of the files you are copying.
If you are copying folders with little files don't be surprised if the speeds drops down well below your 20MB/s.
Some say that turning off Remote Differential Compression helps. Personally, I've not noticed a great difference.
Perhaps you might like to run AS-SSD across the drives (crystal disk mark is not really geared to SSDs), and post the results
AS SSD Benchmark 2.0.7316 Download | TechSpot
What are you moving between the drives? If you are moving larger files (e.g. ISOs, movies, large zip files, etc) then I would expect transfer speeds to exceed 100MB/s. If you are moving a folder with a lot of small files (e.g. pictures, mp3s, program files) then I am not surprised to see transfer speeds that slow.
Some SSDs are better at dealing with small files than others. SSDs that have a high number of IOPS will do better with small files. Samsung 980 PRO, Western Digital Black SN750, Sabrent Rocket, would all be examples of high performance NVMe SSDs. What kind are in your system?
I don't see anywhere how the SSD's are connected. Internal vs external. The speed you are posting might easily be 2 external SSDs in caddies plugged into USB 2.0 ports. That would be a worse case scenario. Worse even if the caddy were dual and both SSDs in it. SATA II and SATA III are a world apart.
Verify for us how they are connected.
All drives are internal and up to date. No error codes. I did disable remote differential and it now moves 2tb files at 100mb/s. I don't have a need to move files between the NVME drives.
I'd like you to get a copy of this small utility, install and run.
Free Download HWiNFO Sofware | Installer & Portable for Windows, DOS
Gives a display like this. I'd really like to see the info in the red box I've indicated.
Here's some numbers I actually get, timed with a stopwatch whenever I make data backups.
All are internal SSD to internal SSD direct drag and drop through File Explorer.
Intel 660p NVMe to Crucial MX100 SATA; 456 GB per hour
Crucial MX100 SATA to Intel 660p NVMe; 1354 GB per hour
Intel 660p NVMe to another folder on the same Intel 660p; 1120 GB per hour
This last one is slightly different: Internal NVMe to another NVMe in an enclosure:
Intel 660p NVMe internal to WD Blue SN550 NVMe in enclosure connected to USB type C port by cable: 1045 GB per hour; about 5% faster than the A port.
The files transferred range in size from tiny 4k Word files on up to 5 mb mp3s and on to 200 mb video files and a few large 25 GB Macrium image files...a wide variety of sizes.
Convert to per second as you see fit.
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