Question T7 4Tb reading at normal speeds but writing to the drive at 2mbps??

[_dawn_chorus_]

The drive reads fine, I can copy files on it and paste them on the internal drive at normal speeds. Samsung magician scan found nothing wrong but trying to copy a 2Gb folder (or anything) writes at 2mbps.
Tried different cables, ports, a restart. Copying onto my T5 2Tb writes that same 2Gb folder instantly even on the same cables. .

Any suggestions?

System:
Win11 up to date.
13600k
32Gb (16x2) Gskill ripjaws 3600 Cl16
MSI Mag Z790 Tomahawk
Nvidia 4080
All drives have at least 11% over provisioning set. All drives are less than 60% full except my 2Tb of game drives those are about 90% full.
C:drive - 1Tb 970 evo
1Tb 970 evo
2 Tb 970 Evo
3x 1Tb 860 Evo
4 Tb WD Blue
External:
2Tb Samsung T5
4Tb Samsung T7 Shield - the problem drive is about 60% full. ]

-Files being copied via the right click copy/paste.

-No wireless connectivity.

 

[Ralston18]

Update your post to include full system hardware specs and OS information.

Disk drive(s): make, model, capacity, how full?

How are the files being copied -app, utility, Command Prompt (DOS), Powershell?

Any wireless connectivity between source drive and target drive?

 

[_dawn_chorus_]

Update your post to include full system hardware specs and OS information.

Disk drive(s): make, model, capacity, how full?

How are the files being copied -app, utility, Command Prompt (DOS), Powershell?

Any wireless connectivity between source drive and target drive?

updated ^

 

[Ralston18]

My first thought is power: External USB using USB power or independently powered via its own power source or perhaps a independently powered USB hub.

Second thought being to use Task Manager, Resource Monitor, and Process Explorer to observe system performance when copying files.

Observe first doing copying that does not slow down and then observe copying that is slow.

Use all three tools but only one tool at a time. Leave the tool window open and observable while copying files.

Watch for what changes when copying is slow or becomes slow.

 

[emike09]

Do you have write caching enabled on that drive in device manager?

 

[_dawn_chorus_]

It appears it has to do with having AOMEI Backupper. I have that drive set to "mirror" mode so every time I back it up it will add, modify, or delete any file that has been added, modified, or deleted, on the source drive. Using the AOMEI software the 3.5Tb drive will be scanned and updated in like ten minutes max, but attempting to drag and drop a file onto it limits the write speed to the 2-3mbps I was experiencing. I have no idea as to why though... but if I wipe the drive it works fast for drag'n'drops up until I write anything onto it using AOMEI's mirror mode. Then it's basically committed to that one app unfortunately.

 

[jshm2]

Yeah, it's the fatal problem with these drives.

The file cache is not very big, hence writing anything large over 1.5GB usually results in dross file transfer speeds.

You can try using a file transfer program like Teracopy. But it's a hardware limit on these SSD's. It;s why they say "up to XX MBps" as what they really mean is "as long as the file cache can handle the input"