File transfers start fast and slow down

[delasangre]

CPU AMD FX8350
MOBO Asus M5A99FX
RAM ADATA XPG V2 DDR3-2400 4x4GB (16GB total)
OS Drive ADATA XPG SX900 128GB
Secondary drives: WD Black 2TB, WD Blue? 1TB, WD My Passport 2TB, WD My Book 6TB

So I just got the 6TB drive to consolidate 3.5-4TB of movies onto. Transferring to the new HDD which is plugged into a USB 3 on the back of the MOBO it moves files to it at 140-150MB/s, transfering back it does 160MB/s for 10 seconds and then in task manager Active time peaks at 100% and speed slams to a halt and drops to 50-70MB/s for the remainder of the move no matter the total size of the move. What is going on?

Oh and the Problem is consistant weather I am copying to and internal drive or the other USB3 external. Also the 6TB is the only drive I have ever seen go this fast, the Black to Blue internals transfer a steady 60MB/s and never get anywhere near 150...

Here are some screenshots, in this order; No load idle, Move files From internal WD Black drive to USB 3 WD My Book both drives, then Same files back from the My Book to the Black drive. Notice how it peaks 100% onto the black drive and slows down?

Idle
From Black
To Book
To Black
From Book

 

[failboat]

How full is the older drive? It's possible it's not able to write large files in sequential order anymore. Do you defrag the drives weekly or so? If it's highly fragmented it will be really slow because it's jumping all over the place. Try using crystaldiskmark to bench the drives.

Make sure the drive is plugged into a USB 3.0 port. 60MB/s is what USB 2.0 peaks at. Your board only has two on the back panel.

ASMedia® USB 3.0 controller :
4 x USB 3.1 Gen 1 port(s) (2 at back panel, blue, 2 at mid-board)
AMD SB950 controller :
14 x USB 2.0 port(s) (8 at back panel, black, 6 at mid-board)

 

[delasangre]

How full is the older drive? It's possible it's not able to write large files in sequential order anymore. Do you defrag the drives weekly or so? If it's highly fragmented it will be really slow because it's jumping all over the place. Try using crystaldiskmark to bench the drives.

Make sure the drive is plugged into a USB 3.0 port. 60MB/s is what USB 2.0 peaks at. Your board only has two on the back panel.

ASMedia® USB 3.0 controller :
4 x USB 3.1 Gen 1 port(s) (2 at back panel, blue, 2 at mid-board)
AMD SB950 controller :
14 x USB 2.0 port(s) (8 at back panel, black, 6 at mid-board)

The WD Black 2TB drive is Internal SATA and 10% capacity, the WD My Book 6TB is on one of the motherboard USB 3.0 Blue ports and it 39% capacity.

Both drives are 100% Defragmented. Weird that the test is writing so fast when windows can't.

-----------------------------------------------------------------------
CrystalDiskMark 6.0.0 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 139.387 MB/s
Sequential Write (Q= 32,T= 1) : 119.921 MB/s
Random Read 4KiB (Q= 8,T= 8) : 1.357 MB/s [ 331.3 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 0.388 MB/s [ 94.7 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 1.399 MB/s [ 341.6 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 0.428 MB/s [ 104.5 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 0.565 MB/s [ 137.9 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 0.424 MB/s [ 103.5 IOPS]

Test : 1024 MiB [F: 9.8% (182.4/1863.0 GiB)] (x5) [Interval=5 sec]
Date : 2018/02/20 11:45:00
OS : Windows 10 [10.0 Build 15063] (x64)

In comparison here is the same test on my WD Green 1TB internal SATA at 20% capacity

-----------------------------------------------------------------------
CrystalDiskMark 6.0.0 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 90.329 MB/s
Sequential Write (Q= 32,T= 1) : 86.989 MB/s
Random Read 4KiB (Q= 8,T= 8) : 1.633 MB/s [ 398.7 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 1.177 MB/s [ 287.4 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 1.624 MB/s [ 396.5 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 1.290 MB/s [ 314.9 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 0.524 MB/s [ 127.9 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 1.092 MB/s [ 266.6 IOPS]

Test : 1024 MiB [G: 19.7% (183.9/931.5 GiB)] (x5) [Interval=5 sec]
Date : 2018/02/20 12:02:22
OS : Windows 10 [10.0 Build 15063] (x64)

Again in comparison here is the same test on my WD My Book 6TB Motherboard USB 3.0 at 39% capacity

-----------------------------------------------------------------------
CrystalDiskMark 6.0.0 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 154.273 MB/s
Sequential Write (Q= 32,T= 1) : 153.365 MB/s
Random Read 4KiB (Q= 8,T= 8) : 0.586 MB/s [ 143.1 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 2.000 MB/s [ 488.3 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 0.602 MB/s [ 147.0 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 1.950 MB/s [ 476.1 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 0.422 MB/s [ 103.0 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 1.920 MB/s [ 468.8 IOPS]

Test : 1024 MiB [H: 39.1% (2186.9/5589.0 GiB)] (x5) [Interval=5 sec]
Date : 2018/02/20 12:08:50
OS : Windows 10 [10.0 Build 15063] (x64)

 

[delasangre]

Ok, so I just tested copying with an aftermarket program called Copy Handler and it ran 122MB/s and then I closed the software and tried the same copy with windows and it started at 160 and then dropped to 55-60 like it was before, so something to do with windows...