Syncing between 2 HDDs very slow

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Posts: 1
Joined: 28 Sep 2016

rubyad

Hi

I'm trying to sync about 2.5gbs of files between an external usb 3.0 hdd and an internal hdd on my pc and its taking about 45mins. Usually it takes about 1 - 3 mins.

How can I fix it?
Posts: 2
Joined: 8 Oct 2016

iDiabloo666

i have too this !
Posts: 17
Joined: 28 Jun 2016

LapisLazuli

Hi,

As observed on my PC, USB 2.0 real speed is approx 20 Mb/s, while 3.0 is approx 120 Mb/s

At this speed, 2.5 Gb should take 20 seconds on USB 3.0, and 2 mns with 2.0.

Did you enable contents comparison, instead of mere file date and size ? Then, for each file, it creates an MD5 hash key, which uniquely identifies the file. This process takes much longer.

Otherwise, I can't see what's wrong...

BRgds.
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Posts: 7211
Joined: 9 Dec 2007

Zenju

it creates an MD5 hash key, which uniquely identifies the fileLapisLazuli
FreeFileSync does a direct memory comparison, which is slightly faster.
Posts: 17
Joined: 28 Jun 2016

LapisLazuli

Hi,
FreeFileSync does a direct memory comparison, which is slightly faster.
Clever. Usually, file comparison uses hash keys, hence my reply. Next time, I'll remember to ask the author first!

Question then, even if (sorry !) it does not relate to the original post: how do you compare large files, like vids or sofware kits? Isn't it possible to get short of memory?

Brgds.