QNAP TS-459U-RP+/SP+ vs TS-419U II vs TS-419U+ vs TS-412U
QNAP 4 Bay NAS
Model Name TS-459U-RP+/SP+ TS-419U II TS-419U+ TS-412U
Target Customer Business Business Business Business
CPU Dual-core Intel® Atom™ (1.80 GHz) Marvell 2.0GHz Marvell 1.6GHz Marvell 1.2GHz
Flash 512MB (DOM for dual OS) 16MB 16MB 16MB
RAM 1GB RAM 512MB RAM 512MB RAM 256MB RAM
Power Supply Specification Output:150W Output: 250W Output: 250W Output: 250W
Input: 100-240Vac, 50~60Hz, 2A Input: 100-240V AC, 50/60Hz Input: 100-240V AC, 50/60Hz Input: 100-240V AC, 50/60Hz
Hot-swappable Yes Yes Yes Yes
Ethernet w/ Jumbo Frame GigaLAN x2 GigaLAN x2 GigaLAN x2 Gigabit LAN x2
USB 2.0 port 5 (front x1; back x4) 4 (front x1; back x3) 4 (front x1; back x3) 4 (front x1; back x3)
eSATA 2 2 2 2
VGA (for maintenance) Yes No No No
NFS, SMB/CIFS, AFP Yes Yes Yes Yes
Max IP Cameras Supported 4 4 4 4
Internal HDD Support SATA 3Gb/s (2.5" & 3.5")
SSD
SATA 3Gb/s (2.5" & 3.5") SSD SATA 3Gb/s (2.5" & 3.5")
SSD
SATA 3Gb/s (2.5" & 3.5")
SSD
RAID 0/1/5/10/6/5+Spare/JBOD/Single/ Expansion/ Migration/ RAID Recovery Yes Yes Yes Yes
AES 256-bit Volume-based Encryption Yes No No No
iSCSI Target Service Yes (Up to 256 targets) Yes (Up to 256 targets) Yes  (Up to 256 targets) Yes  (Up to 256 targets)
VMware Certification Yes No No No
SPC-3 for clustering, LUN Masking & Mapping, MC/S, MPIO Yes Yes Yes Yes
Real-time Remote Replication (RTRR) Yes No No No
Wake On LAN Yes Yes Yes No
Max User Accounts 4096 4096 4096 4096
Max Groups 512 512 512 512
Max Shared Folder 512 512 512 512
Concurrent Connections 256 256 256 256
SMB* (MB/sec) Read: 115.4 Read: 107 Read: 101.7 Read:  91.4
Write: 107.0 Write: 70 Write: 43.5 Write: 33.4
FTP* (MB/sec) Read: 116.4 Read: 104 Read: 114.1 Read:  100.5
Write: 112.3 Write: 75 Write: 42 Write: 32.2
Power Consuming(W)* Sleep mode: 40 Sleep mode: 12 Sleep mode: 15 Sleep mode: 15
In operation: 62 In operation: 23 In operation: 29 In operation: 29
*Testing results may vary in different system condition
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