I go on here with my tests.
I do this for ideology and pleasure, I don't care about saving 30-50€: I wanted a NAS made by a raspberry because I like this little game.
Raspberry B, Verbatim SD card class 10 with pre installed noobs (http://www.ebay.co.uk/itm/8GB-MicroSD-C ... OC:IT:3160
Raspbian, SAMBA, cable connected to my LAN (by a hub 10-100, not gigabit).
Two generic External Cases USB3 with usb3 cable, formatted ext3. On my pc (debian) the transfer speed is between 33 and 90 MB/s (Mega Byte) depending from the configuration (usb port 2 or 3, with cables usb 2 or 3 ..... no relevant to here).
With these external HD connected to the Rasp, coping big file (movies) I measure (rsync -avh --progress):
- from an external USB to the other 2,34 MB/sec (average)
- coping from my pc to an external Hd connected to the Rasp 3,5 MB/s
- interesting that from rasp to my pc there is a very little but constant difference (less than 5%).
I can't see appreciable differences using the terminal or the nautilus of Debian.
From an external HD to the SD card (/): first time 2,34MB/s, repeated twice, 3,72MB/s and 5,37MB/s (same file, same way,same situation)
from SD to external 5,16 (the same file in the same way) 5,16 first and 5,23 second time.
I see differences but I can't imagine any answer.
Did anyone else made similar test?