Slow Transfer Speeds

[JustinSane]

I am currently moving a 70 gb folder from a backup drive to my main drive. When it started it was moving at 60 mb/s, after a minute or two of transferring it is moving at 4 mb/s. Is that normal?

This is on Vista x64. Backup drive is a WD 640 32 mb cache, main drive is a WD 500 16 mb cache.

 

[drescherjm]

after a minute or two of transferring it is moving at 4 mb/s. Is that normal?

That is normal for a mechanical hard drive and lots of small to medium sized files.