Code:
##Reference Test #1 Server based, usb 2.0 write to Lexar USB Thumbdrive.
[root@corgi jperf-2.0.2]# rsync --progress /newmedia/torrents/12k\ Wallpaper\ dump.zip /run/media/rahlquist/LinuxExt4/
12k Wallpaper dump.zip
5380123148 100% 15.68MB/s 0:05:27 (xfer#1, to-check=0/1)
sent 5380779988 bytes received 31 bytes 16429862.65 bytes/sec
total size is 5380123148 speedup is 1.00
##Reference Test #2 Server based, usb 2.0 write to Toshiba THNSNJ128GMCT SSD in http://www.amazon.com/USB-3-0-MSATA-II-ENCLOSURE/dp/B017O3NSKE?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_search_detailpage
results incomparable
####Reference Test #3 Server based, usb 3.0 write to Toshiba THNSNJ128GMCT SSD in http://www.amazon.com/USB-3-0-MSATA-II-ENCLOSURE/dp/B017O3NSKE?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_search_detailpage
results incomparable
##Reference Test #4 Server based, SMBMOUNT write to Lexar USB Thumbdrive installed on Pine64 using clean Xenial image from longsleep and standard samba install
[root@corgi ~]# rsync --progress /newmedia/torrents/12k\ Wallpaper\ dump.zip /mnt/testing1/
12k Wallpaper dump.zip
5380123148 100% 16.60MB/s 0:05:09 (xfer#1, to-check=0/1)
sent 5380779988 bytes received 31 bytes 15943051.91 bytes/sec
total size is 5380123148 speedup is 1.00
##Reference Test #4 Server based, SMBMOUNT read from Lexar USB Thumbdrive installed on Pine64 using clean Xenial image from longsleep and standard samba install
[root@corgi ~]# rsync --progress /mnt/testing1/12k\ Wallpaper\ dump.zip /ms/
12k Wallpaper dump.zip
5380123148 100% 27.85MB/s 0:03:04 (xfer#1, to-check=0/1)
sent 5380779988 bytes received 31 bytes 29164119.34 bytes/sec
total size is 5380123148 speedup is 1.00
Tests 1 through 3 were on my full blown file server not the pine, just given for reference of I/O speed of the usb device under test.
FYI this is as far as I will test this. I dont believe the Pine64 or virtually any SBC is a good viable NAS device. Other than being untested (literally in Pines case) I just see no benefit in the amount of additional money you have to throw at something like a pine to make it works like a decent NAS. Of course your time and money is your own. Enjoy!