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Windows 7: Questions about my new harddrive

07 Oct 2011   #1
CommandoBob

Windows 8 Professional x64
 
 
Questions about my new harddrive

I've got a few questions about my new HDD, a Samsung S2 portable 320gb 2.5 usb
  1. It says 480Mbit a second of transfer rate - although when I try to copy something it's like 10MB/sec
  2. Does 2 hard drives increase performance? (Samsung is external and my other one is Internal)

Thanks!


My System SpecsSystem Spec
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07 Oct 2011   #2
theski232

Windows 7 Home Premium 64 Bit
 
 

The HDD can handle 480Mbit/sec transfer but it also depends on how fast your computer can transfer the files.
My System SpecsSystem Spec
07 Oct 2011   #3
CommandoBob

Windows 8 Professional x64
 
 

Quote   Quote: Originally Posted by theski232 View Post
The HDD can handle 480Mbit/sec transfer but it also depends on how fast your computer can transfer the files.
What do you exactly mean with that?
My System SpecsSystem Spec
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07 Oct 2011   #4
Corazon

Windows 7 Professional SP1 32-bit
 
 

480MBit/sec is the theoretical top speed of the USB 2.0 protocol. Note it's MBit, not MB (megabytes) - with practical overhead and other factors, the most you can really get out of USB 2.0 is about 40-50MB/sec.

Other factors affecting file copy speed over USB...the two harddisks involved, their degree of fragmentation, rotational speed, random access time, size of the files to be copied, filesystems in use, CPU load during the copy process, whether write caching is enabled or disabled for the internal and USB drives, and so on and so on. Even the quality of the actual USB-to-SATA adapter built into the external drive case affects the speed.

However, if you consistently get no more than 10MB/sec there's a rather serious bottleneck somewhere as you should get at least double that speed.
My System SpecsSystem Spec
07 Oct 2011   #5
CommandoBob

Windows 8 Professional x64
 
 

Quote   Quote: Originally Posted by Corazon View Post
480MBit/sec is the theoretical top speed of the USB 2.0 protocol. Note it's MBit, not MB (megabytes) - with practical overhead and other factors, the most you can really get out of USB 2.0 is about 40-50MB/sec.

Other factors affecting file copy speed over USB...the two harddisks involved, their degree of fragmentation, rotational speed, random access time, size of the files to be copied, filesystems in use, CPU load during the copy process, whether write caching is enabled or disabled for the internal and USB drives, and so on and so on. Even the quality of the actual USB-to-SATA adapter built into the external drive case affects the speed.

However, if you consistently get no more than 10MB/sec there's a rather serious bottleneck somewhere as you should get at least double that speed.
Tried to transfer Program Files (x86) from my old hdd to my new hdd - transfer rate is 6mb/sec? This is probably not good, how do I fix this?
My System SpecsSystem Spec
07 Oct 2011   #6
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

The Program Files (x86) folder is kind of an odd folder to transfer. Are you trying to make a back up copy of your installed programs onto the new external hard drive?
My System SpecsSystem Spec
07 Oct 2011   #7
CommandoBob

Windows 8 Professional x64
 
 

Quote   Quote: Originally Posted by ignatzatsonic View Post
The Program Files (x86) folder is kind of an odd folder to transfer. Are you trying to make a back up copy of your installed programs onto the new external hard drive?
No I'm testing the transfer rate of the hard drive.
My System SpecsSystem Spec
07 Oct 2011   #8
pparks1

Windows 7 Ultimate x64
 
 

The best way to test your speed is to try copying a single large file. Do you have anything like a 1GB or 2GB ISO file you could copy. Copy that, time it with a stopwatch and then do the actual math. If you get around 30MB/sec...things are just fine and that's about what you will get with USB 2.0.
My System SpecsSystem Spec
07 Oct 2011   #9
CommandoBob

Windows 8 Professional x64
 
 

Quote   Quote: Originally Posted by pparks1 View Post
The best way to test your speed is to try copying a single large file. Do you have anything like a 1GB or 2GB ISO file you could copy. Copy that, time it with a stopwatch and then do the actual math. If you get around 30MB/sec...things are just fine and that's about what you will get with USB 2.0.
I get 26MB/sec, that's okay? Also to increase boot and loading of games for exmaple do I need to have all files running on the Samsung HDD?
My System SpecsSystem Spec
07 Oct 2011   #10
pparks1

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by CommandoBob View Post
I get 26MB/sec, that's okay? Also to increase boot and loading of games for exmaple do I need to have all files running on the Samsung HDD?
That's about right for a USB 2.0 device. Extenal USB 2.0 drives are great for offsite storage, backups, etc. I would not however advise trying to run applications or games from them. Too slow.
My System SpecsSystem Spec
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