QNAP TS-439U vs TS-409U, TS-411U, WS-411U
  TS-439U-RP
Model Name TS-439U-SP/RP TS-409U TS-411U WS-411U
CPU Intel ATOM 1.6GHz Marvell 5281 500MHz Pentium M 1.6GHz Pentium M 1.6GHz
Flash 128MB (DOM) 8MB 32MB -
RAM 1GB DDRII 512MB DDRII 512MB DDR 512MB DDR
Ethernet GigaLAN x2 GigaLAN x1 GigaLAN x2 GigaLAN x2
USB 2.0 port x3 X3 X2 X2
SCSI - - Ultra 320 SCSI (For SCSI Tape) Ultra 320 SCSI (For SCSI Tape)
VGA Yes - - Yes
UPS Support Yes Yes Yes Yes
Smart Fan Yes Yes Yes Yes
Internal HDD Support 2.5" SATA or 3.5" SATA I/II SATA I/II SATA I/II SATA I/II
LED indicator USB, status, LAN, HDD1-4 USB, Status, LAN, HDD 1-4 Power, Error, Network Status, Hard Disk Power, Error, Network Status, Hard Disk
LCD display - - Yes Yes
Power Supply Specification Output:150W
Input: 100-240Vac, 50~60Hz, 2A
200W, Input:115-230 Vac~, 47-63 Hz, 3.0A Redundant/ Hot Swap ATX Power Supply, 150W, 95-265V Redundant/ Hot Swap ATX Power Supply, 150W, 95-265V
Online RAID Capacity Expansion Yes Yes - -
Online RAID Level Migration Yes Yes - -
RAID 0 Yes Yes Yes Yes
RAID 1 Yes Yes Yes Yes
RAID 5 Yes Yes Yes Yes
RAID 6 Yes Yes - -
RAID 5+spare Yes Yes Yes -
Single Yes Yes Yes Yes
JBOD Yes Yes Yes Yes
Dynamic DNS Yes Yes - -
NFS (Linux client support) Yes Yes Yes No
SMB/CIFS Yes Yes Yes Yes
AFP (for Mac) Yes Yes Yes Yes
Windows AD Service Yes Yes Yes Yes
Web Server Built-in phpMyAdmin/ MySQL and SQLite (dual support) Built-in phpMyAdmin/ MySQL and SQLite (dual support) - -
HTTPS/ SSL Secure Login Yes Yes - -
Web File Manager Yes Yes Yes -
Remote Replication Yes Yes Yes -
Encrypted Remote Replication (over SSH) Yes Yes - -
Backup Server with NetBak Replicator Software (Auto-sync, Schedule, and Instant Backup) Yes Yes Yes Yes
Built-in tape backup software function - - Yes Yes
USB One-Touch-Copy Yes Yes - -
FTP Server Yes Yes Yes Yes
FTP Passive Port Range Setup Yes Yes - -
FTP over SSL/TLS (explicit encryption) Yes Yes - -
FTP Bandwidth Control Yes Yes Yes Yes
SSH/Telnet Login Yes Yes Telnet Telnet
Configurable Management Port Yes Yes - -
IP Filter Yes Yes - -
Journaling file system Yes Yes Yes -
Unicode support Yes Yes Yes Yes
Network Recycle Bin Yes Yes - -
UPnP/ DLNA Media Server Twonky UPnP/ DLNA with Internet Radio Twonky UPnP/ DLNA with Internet Radio - -
BitTorrent/ FTP/ HTTP Download Station Yes Yes - -
QGet Download Remote Control Software Yes Yes - -
iTunes Music Server Yes Yes - -
Max User Accounts 4096 1024 1024 1024
Max Groups 512 128 128 128
Share folder level ACL support Yes Yes Yes Yes
Max Shared Folder 512 256 256 256
User Quota Setting Yes Yes Yes Yes
Multi-lingual Support 15 15 6 6
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