Dear Sir,
1. Nsync support 2 Thecus device backup to each other, due to the Nsync base on FTP with VPN to encryption, thus we also back up via FTP even have only 1 Nsync device, If would backup from N5200 Nsync Task to an N2100, because N2100 with Nsync fucntion, thus we need doing following steps on N2100:
A. New add a folder called "nsync" and public=no, and than assign an user account with authorization to wiriting in this folder.
B. Enabled FTP server & UTF-8.
C. Setup a Nsync Task on N5200, and keyin the user account/pass with authorization to wiriting in the folder, and check to "legacy FTP".
2. Current we just test the Hitachi Deskstar 7K1000 HDS721010KLA330, t hus we would recommand the Hitachi Deskstar 7K1000 HDS721010KLA330.
3. We would recommend the 1U4500 for rack mountable version.
Yvon.