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Windows 7: SATA drive in USB3.0 Enclosure

16 Apr 2011   #21
meddylad

Windows 7 Ultimate 64 bit with SP1
 
 

398GB left out of 465GB - so its only about 1/6th full - when i formatted the drive i changed the cluster size from 4k to 64k - i was hoping this would have given me alittle more speed as the expense of space, but i knew i wouldnt have used the full 500GB. But this should not effect the drive as when using ATTO, the larger read/writes would show a marked peerformance increase.

I have just put the drive into a standard SATA to USB connector and received exactly same speeds on usb2 as with the usb3 adapter - im sure that that is pretty slow even for usb2 standards, so im at a loss

Many thanks for your help though, nice to know folks are around to help in times of need


My System SpecsSystem Spec
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16 Apr 2011   #22
pooch

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by meddylad View Post
398GB left out of 465GB - so its only about 1/6th full
bang goes my theory that write speeds were so low cos it was full
Quote   Quote: Originally Posted by meddylad View Post
I have just put the drive into a standard SATA to USB connector and received exactly same speeds on usb2 as with the usb3 adapter - im sure that that is pretty slow even for usb2 standards, so im at a loss
USB is very slow haha and those speeds are in my experience pretty normal
Quote   Quote: Originally Posted by meddylad View Post
Many thanks for your help though, nice to know folks are around to help in times of need
No problem I just wish we had a better result
My System SpecsSystem Spec
16 Apr 2011   #23
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

i ran a 7200RPM Barracuda in my eSata enclosure and a 5400RPM HD that I had recovered from a laptop when I installed an SSD. The results are below.

My conclusion is that it is the speed of the disk that rules the transfer speed. It would be interesting to test an SSD in both enclosures - but unfortunately I have no loose SSD lying around.


Attached Thumbnails
SATA drive in USB3.0 Enclosure-2011-04-16_1204.png   SATA drive in USB3.0 Enclosure-2011-04-16_1217.png  
My System SpecsSystem Spec
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16 Apr 2011   #24
pooch

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by whs View Post
i ran a 7200RPM Barracuda in my eSata enclosure and a 5400RPM HD that I had recovered from a laptop when I installed an SSD. The results are below.

My conclusion is that it is the speed of the disk that rules the transfer speed. It would be interesting to test an SSD in both enclosures - but unfortunately I have no loose SSD lying around.
No me neither :-( Nice speeds all the same and I agree with your conclusion.
When I copy between disks I get some very high speeds according to windows and I wonder if this is just a windows bug?
Copying 2,98GB using USB 3 from my Samsung RAID to a 2,5 laptop disc that has been rated previously in this thread by ATTO as being a lot slower


Attached Images
SATA drive in USB3.0 Enclosure-capture.png 
My System SpecsSystem Spec
16 Apr 2011   #25
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I have just the opposite. When I image to those disks (about 20GB of compressed image), the transfer speeds are a lot slower than the Atto numbers. And it is probably not CPU bound because that is an i7 running at a very low load when imaging.
My System SpecsSystem Spec
16 Apr 2011   #26
pooch

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by whs View Post
I have just the opposite. When I image to those disks (about 20GB of compressed image), the transfer speeds are a lot slower than the Atto numbers. And it is probably not CPU bound because that is an i7 running at a very low load when imaging.
Strange but then 20GB is a lot larger than the file I was moving and may have something to do with it.
My System SpecsSystem Spec
16 Apr 2011   #27
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I think next time I will check whether Write Caching is enabled. Last time I did not check that.
My System SpecsSystem Spec
16 Apr 2011   #28
pooch

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by whs View Post
I think next time I will check whether Write Caching is enabled. Last time I did not check that.
Its worth doing as it makes a difference best if you have a power supply to your externals
My System SpecsSystem Spec
16 Apr 2011   #29
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I have seperate power for the eSata enclosure, but not for the USB3.
My System SpecsSystem Spec
16 Apr 2011   #30
pooch

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by whs View Post
I have seperate power for the eSata enclosure, but not for the USB3.
Its only in case of a power interruption to avoid data loss I believe that is quite rare and have always enabled these options anyway for the speed benefit
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 SATA drive in USB3.0 Enclosure




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