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All Forums > Tech Talk > Tech Talk Forum Page 2 > Transfer speed slowing on external drive
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rearadmiral All-Star Supporter
All-Star Member

6510 Posts
12/11
Posted - Jan 1 2024 : 8:25PM
Hi all. I've noticed this a few times in the past and I'm experiencing it as I write this. I'm transferring some scenes to a WD external drive. It's a 4TB drive that has about 100GB of room remaining. Normally, this and all my other drives transfer data at anywhere between 60 and 100 MB/s, but the data transfer on this drive now is usually around 6 MB/s. Is there a cache or buffer on the drive that gets full? Is there any way to "fix" this to get a faster transfer speed?

Not to sound ungrateful to anyone who has advice, but I'm not particularly tech savvy, so if the solution is complex, I'll just have to live with the problem. With the drive being pretty much full, these will likely be the last scenes I put on it, but I'm still curious if this is a known issue and if there is a fix.

Thanks!!

Flash All-Star Supporter
Golden Age Classic

11018 Posts
5/01
Posted - Jan 1 2024 : 8:57PM
My first guess would be the cable has gone bad
rearadmiral All-Star Supporter
All-Star Member

6510 Posts
12/11
Posted - Jan 2 2024 : 7:37AM
^ That's a good suggestion. Even though the drive is maybe six months old, the cable is probably six years old. I swapped it out and there was an improvement. I still saw occasional slow transfer speeds, but overall it was faster. Thanks for the tip. Just in case the drive has a problem, I'll be backing it up ASAP as well.
Flash All-Star Supporter
Golden Age Classic

11018 Posts
5/01
Posted - Jan 2 2024 : 9:24AM
What system do you use (Windows, Mac?)
rearadmiral All-Star Supporter
All-Star Member

6510 Posts
12/11
Posted - Jan 3 2024 : 10:07AM
^ It's Windows 10. I've been backing stuff up and I'm pretty sure that there must be some issue with the lack of space. I say that because I backed up from this slow drive to an 8TB WD drive and the transfer speed was around 105 MB/s. The receiving drive was only about 50% full, so if there is a requirement for a cache or a buffer, then the almost-full drive might not have the needed space. I'm just guessing.

Since I was backing up that specific drive I took the time to back up other stuff on other drives and have duplicated the problem. The one thing that concerns me still is that some of the drives I was backing up to were quite full as well and while download speeds were a bit slower (~60 MB/s) they were still nothing like the 5 MB/s I was seeing on the drive that was almost full. Maybe the drive that's running slow for transfers is proportionally more full and that makes the difference.

I appreciate your advice.

 
Flash All-Star Supporter
Golden Age Classic

11018 Posts
5/01
Posted - Jan 3 2024 : 12:01PM
There is also a simple way to do a quick check of the drive. If you right click on the drive, select properties, and then tools will give you an option do do a quick disc check
rearadmiral All-Star Supporter
All-Star Member

6510 Posts
12/11
Posted - Jan 3 2024 : 6:40PM
^ Good tip. I didn't know that existed. I ran it and no errors were found. The option to optimize and defragment the disk is there too. I presume that if I've been adding and removing stuff frequently from the drive over the past few months that it could be fragmented. Whether that is the cause of the slow transfer, is that something worthwhile doing? Are there any risks? As of yesterday, the drive is 100% backed up.

I have a bunch of external drives where data is moved around. If optimizing/defragmenting this one is a good idea (depending on your answer), then it probably makes sense to do this with all of them, right?

I appreciate your help with this.

Flash All-Star Supporter
Golden Age Classic

11018 Posts
5/01
Posted - Jan 3 2024 : 7:43PM
Yes it is a good idea. The more fragmented files are the longer they take to access.
HumptyRumpty
Senior Member

1663 Posts
8/18
Posted - Jan 4 2024 : 10:07AM
^^ About the only risk I can think of is if you lose power during the defrag. I could see the potential for the file that was being worked on at the time becoming corrupt. As long as you've got the drive backed up, definitely do the defrag. Plan on doing something else while it runs. It will likely take a while.
rearadmiral All-Star Supporter
All-Star Member

6510 Posts
12/11
Posted - Jan 4 2024 : 10:54AM
^ and ^^ Thanks to both. I ran the available diagnostics last evening and everything was fine. This morning I optimized/defragmented the disk. That took about an hour and no problems were reported. While my main complaint was the slow transfer speed, my biggest worry was impending drive failure. I haven't tested the transfer speed recently, but since the drive is almost full I'm only adding one weekly scene to it anyway. If it remains slow, I can live with that.

I should add that when this issue first came up, I tried playing a video and it took forever for VLC to start playing it, and it took a long time to catch up when I scrubbed ahead. That problem hasn't occurred again.

Now that I think of it, it's possible that at the time I was transferring and getting slow speeds (and playing and having issues) that something was running an update or scan in the background and being a resource hog. I didn't check Task Manager to see what was running.

In any event, my biggest worry, that the drive was failing, doesn't seem to be something I need to worry about. All indicators are that the drive is healthy. It is less than a year old and doesn't have a lot of hours on it. Plus, it's 100% backed up.

If the slow transfer speed continues, I'll chalk it up to limited space on the disk and live with it. The next test will be when a new Hookup Hotshot scene is available. That'll be the next time I load anything onto that drive.

But, as I say, my biggest worry, imminent drive failure, doesn't seem to be a problem.

Thanks again! As a non-tech guy, you've been helpful and have given me confidence that I'm not about to lose the drive.

HumptyRumpty
Senior Member

1663 Posts
8/18
Posted - Jan 6 2024 : 1:15PM
^ You're welcome. If you want to really check on the status of your drive(s), get GSmartControl. It will give you WAY more information about your drive than you thought existed. When you first bring it up, it will display all of your drives.
_GSmart01.PNG

Hover your cursor over each drive to get the drive letter. Right-click a drive to display a pop-up menu. Select "View details". That will bring up a new window. Select "Error Log" from the gray bar near the top. This will show any errors that your drive has encountered and is probably the most useful screen.

_GSmart02.PNG

If you click on "Attributes", in that same window, you'll get something that might seem a bit scary at first:

_GSmart03.PNG

"Scary" being all of the "pre-failures" and "old age" entries under "Type". To be honest, I don't know enough about GSmartControl to comment about these entries. But I do know that this drive is only around 2 years old and hasn't seen all that much use. I am comforted by the Failed column containing only "never" entries.

Yes, you can totally geek out with this tool. But you can also easily use it for a quick check on the health of your hard drive(s).

rearadmiral All-Star Supporter
All-Star Member

6510 Posts
12/11
Posted - Jan 6 2024 : 5:08PM
^ I remember a few years ago when I had an error message on a drive, someone here recommended a diagnostic tool from Japan. It was free and easy to use. I don't remember what it was though. I'll check this software out too and scan my drives. Thanks!



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