OT - network speed problem

[Shlomo Solomon]

This is OT, but I'm out of my depth here so I hope someone can help, or
at least explain my problem.

I have a D-Link DSL-2760U router provided by Bezeq. It has 2 USB ports
so I decided to setup a sort of home-made NAS to provide disk space for
my home network.

I connected a WD USB disk (1 TB) and tried copying files to and from
the disk. I didn't expect lightning speed, but was surprised by how slow
everything is. 

Here are some numbers:

I tested the disk connected to a USB port on my computer and was able
to read or write a 1 GB file in about 40 seconds.

After connecting the disk to the router, the speeds are:

reading 1 GB - 9 minutes
writing 1 GB - 18 minutes 

I can understand some loss of speed, but this doesn't seem logical.

I should probably mention that the disk is formated NTFS because the
router only supports NTFS and FAT32. The test were all done on my
Mandriva 2011.0 system.

What am I missing and/or doing wrong?

-- 
Shlomo Solomon
http://the-solomons.net
Sent by Claws Mail 3.7.9 - KDE 4.6.5 - LINUX Mandriva 2011.0