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Windows 7: External Hard-Drive Suggestions?

10 Feb 2010   #11
Jonathan_King

Windows 7 Professional x64
 
 

I don't think transfer speeds are relevant with external vs internal. USB 2.0 is fast enough that the drive itself is the bottleneck, not the interface.

Now, get an SSD, and you may see a difference, but as far as I know, the speed of the drive itself is slower than SATA or USB 2.0.

Correct me if I'm wrong.


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10 Feb 2010   #12
Zepher

Windows 7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by Jonathan_King View Post
I don't think transfer speeds are relevant with external vs internal. USB 2.0 is fast enough that the drive itself is the bottleneck, not the interface.

Now, get an SSD, and you may see a difference, but as far as I know, the speed of the drive itself is slower than SATA or USB 2.0.

Correct me if I'm wrong.
Depending on the drives, USB2.0 is the bottleneck. I have 3 WD 1TB Black drives, just happen to have one in a My Book enclosure since I ran out of space inside my pc.
I get sustained 100+MB/s transfers on the internal Black Drives and upto 88MB/s on the external. The transfer speed goes down when you are transferring a lot of smaller files.
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10 Feb 2010   #13
nate42nd

Windows 7 Professional x64
 
 

It just happens I was using a FreeAgent Go also when I decided to get this. This is my video and in part 2 I show you some tests between USB and eSATA.

It's a Rosewill RX-358-S External Enclosure

http://www.youtube.com/watch?v=Jg1qp52MJJQ

I LOVE it and you can put a 1.5 or 2TB drive in it.
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11 Feb 2010   #14
JonM33

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by Zepher View Post
Here are 2 of my External WD Mybooks, a 1TB black and a 500GB,


Windows transfer rates are not realistic due to buffering and burst rates. Show a HDTune benchmark for more realistic transfer rates. Most likely it will be between 30-40MB/s at most. It's the limitation of USB 2.0.

Edit- Nice pirated movies you got there too!
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11 Feb 2010   #15
pparks1

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Jonathan_King View Post
I don't think transfer speeds are relevant with external vs internal. USB 2.0 is fast enough that the drive itself is the bottleneck, not the interface.
The USB 2.0 spec is 480 megabits per second max. Thus, 480 megabits per second, divided by 8 bits to a byte = 60,000,000 bytes per second. However, I have never witnessed USB 2.0 running anywhere close to 100% max...it's at best about 60%. So, about 36MB/s is the best that you get. An internal drive will run 2x faster than that...or more.
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11 Feb 2010   #16
Lollies

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by nate42nd View Post
It just happens I was using a FreeAgent Go also when I decided to get this. This is my video and in part 2 I show you some tests between USB and eSATA.

It's a Rosewill RX-358-S External Enclosure

http://www.youtube.com/watch?v=Jg1qp52MJJQ

I LOVE it and you can put a 1.5 or 2TB drive in it.
Seems like a very good option, especially since I have two WD Raptor drives available to use but I believe that it is 500gigs total with the 2 if I remember correctly which isn't much when you just have one.

Quote   Quote: Originally Posted by pparks1
The USB 2.0 spec is 480 megabits per second max. Thus, 480 megabits per second, divided by 8 bits to a byte = 60,000,000 bytes per second. However, I have never witnessed USB 2.0 running anywhere close to 100% max...it's at best about 60%. So, about 36MB/s is the best that you get. An internal drive will run 2x faster than that...or more.
I have a mid-tower case which has two drives in it already, it has room for 4 but I'm afraid with the way it is configured with the graphics card haveing 4 would disrupt the airflow. Due to the location of installation on the motherboard for the graphics card it leaves about an inch of space between the top of the hard drive cage and the end of the graphics card which is a EVGA Geforce 9800 GX2. If any of that makes any sense. I could take pics if it doesn't to show. I should have gotten a high tower probably to begin with but I didn't see the point if I was only running 1 graphics card?
______________________________________________________________________

What looks like the best option thus far?

Thanks,
-Lollies
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11 Feb 2010   #17
JonM33

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by pparks1 View Post
The USB 2.0 spec is 480 megabits per second max. Thus, 480 megabits per second, divided by 8 bits to a byte = 60,000,000 bytes per second. However, I have never witnessed USB 2.0 running anywhere close to 100% max...it's at best about 60%. So, about 36MB/s is the best that you get. An internal drive will run 2x faster than that...or more.
That's because a percentage of the USB 2.0 bandwidth is reserved for USB protocol overhead.
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14 Feb 2010   #18
Lollies

Windows 7 Ultimate x64
 
 

What would be a good drive to accompany the Rosewill RX-358-S External Enclosure? I'd like a 500g-1TB of space. In my comp I have 2 WD veloci-raptors.
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14 Feb 2010   #19
DocBrown

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
 
 

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14 Feb 2010   #20
Lollies

Windows 7 Ultimate x64
 
 

For an external would Western Digital Caviar Black WD1001FALS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive be efficient? I've been looking at WD's drives on newegg.
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 External Hard-Drive Suggestions?




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