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Windows 7: Slow Bitlocker File transfer

20 Jan 2010   #1

Windows 7 Ultimate X64 SP1
 
 
Slow Bitlocker File transfer

wasnt sure where to put this, so this will do,

basically iv noticed that if im copying files from a non Bitlocked drive to a Bitlocked one, it goes ridiculously slowly, Ie. normal transfer is 20-30MB/s Bitlocker is 4-9MB/s

now im assuming that this is simply because Windows is encrypting it as it goes, i just wanted to check that there is not actually something wrong

My System SpecsSystem Spec
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20 Jan 2010   #2

Windows 7 x64 (SP1)
 
 

Encryption is a slow slow process. Where are you transferring the file? Two different HDDs? Separate partitions? External USB drive?
My System SpecsSystem Spec
20 Jan 2010   #3

Windows 7 Ultimate x64
 
 

Seems about right to me. Obviously the encryption is going to add quite a bit of overhead and will slow down the process. Personally, I prefer using True Crypt for my encryption needs as it works across more OS's and offers more flexibility. But what you are seeing I think is totally normal and based on your normal speeds of 20-30...seems about right to get 5-10.
My System SpecsSystem Spec
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 Slow Bitlocker File transfer





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