Gradually slowing file transfer (internal and external 3.0 hd)

[KDT]

Hello, made this account to ask some PC questions.

I filled out a ton of PC specific questions so if you're wondering what motherboard I'm using or hard drive, look there (wherever it is, still new so ...)

Anyhow, I did some scans with CrystalDiskInfo and have attached it for your viewing. The 500 Gb is my OS HD. I'm not PC savy other than the average google up problems and try to figure it out. Technical issues that involve installing tons of software and looking at tons of data confuses me and depresses me (I have depression / anxiety issues).

So I recently got a 3.0 PCI express card because I got a bunch of external hard drives.

I notice that the file transfer varies a lot. Single files transfer fast, but many times I have stuff like shows that are around 200 MB each and commonly transfer folders of them at 5-10 GB. My transfers from internal hd to internal hd starts at 80mbs and get to be about 40mbs (slowest I've had is around 30mbs). For internal to external hd 3.0 usb, I also start out fast with 120mbs and then it slowly goes down more and more to around even 40 or 30s which is not much of an upgrade from 2.0.

What's with the major slow down?

It just seems like my speed just slowly dies down and I'm not talking about the sudden drop in the first few seconds, but after several minutes.


I have checked and defrag my drive. Windows show none is fragmented. I check disk before as well, about a week or two ago, all seems well.

Here's some data from my hd scans.

Any thoughts as to why it gets so slow?


My 500 gb, I have 160GB left and sometimes i get to 80GB left.

1TB storage hard drive I have about 100 GB left.


I also notice that the mbs transfer changes like sometimes when I transfer and it's slow, I cancel and try to transfer again and it seems a bit overall faster...sometimes. Based on quickly looking at some old files, it seems like both internal hard drives are about 5 years old but I find it weird that CrystalDiskInfo says that the 1TB hd which I leave idle and probably turns off on its own a lot due to the power saving has twice the hours as my OS HD which I have on all the time and use a lot more........

Just weird stuff.....

 

[logicearth]

It is normal. Hard Drives cannot sustain high speeds for long transfers. They work in burst. You see you get that high speed when the system is filling the on board cache of the HDD, then once it fills up it has to wait for the HDD to empty the cache and write it to the platters. This slows the longer transfer every time.

There is no problem, just the limitations of mechanical Hard Drives.

 

[KDT]

Hmm...

I just notice that sometimes it's faster than others. I mentioned that sometimes I cancel it when it's really slow and tried again and it stayed at a better speed.

I was hoping that it would stay at a higher speed for longer.


Based on my attachments, the drive with the caution on it, should I worry?

I was also wondering this:

I have 3 HD, I want to copy file A on the first hard drive onto both of my other hard drives at the same time. Will that ever cause any issues like data corruption and so forth?

 

[KDT]

I would be also cool if the speed goes down for some files and goes back up for others, but it sort of feels like it's all downhill sometimes. Sometimes it stays within a range and sometimes it feels like the longer it goes, the slower it gets. With 20 mbs, I'd take a short vacation overseas and come back when it's done LOL.

 

[Wandering one]

It will also depend on free space on the drives. If you do a lot of moving files around it leaves a lot of spaces here and there which will add to the time for writes. I am using a D-link USB3 controller as my mobo is only a 2 max. I can transfer files in the gigabyte size (video) to WD book 1tb drives at between 500 to 900 Mbs when the drives have free space and are defragged.

Art.