It is very simple to make SD card or a hard disk into Network Attached Storage.
Here is mine: I use it as a tiny git server to storage code, save some money to rent the private cloud on github
1. insert your microsd card(or USB disk) to VoCore2
once you insert the card or disk, you will find it mounted in /mnt.
2. setup ap+sta: read this blog http://vonger.cn/?p=2691
Or read the tutorial on vocore.io/v2u.html(do not forget setup /etc/config/firewall).
3. enable samba on VoCore2(latest firmware already have samba, please download at http://vonger.cn/misc/vocore2/ultimate.20161114.bin
4. Now you can find your NAS every where
note1: you might need to setup your VoCore2 local ip. mine is 192.168.1.113.
uci set samba.@samba.interface=’127.0.0.1/8 lo 192.168.1.113/24 br-lan’
uci commit samba
note2: you might need to setup your VoCore2 firewall.