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Hardware Specifications

Model name/option	DS412+	DS411	DS411j
CPU Frequency	Dual Core 2.13GHz	1.6 GHz	1.2GHz
Floating Point
Hardware Encryption Engine
Memory	DDR3 1GB	DDR3 512MB	DDR2 128MB
Internal HDD/SSD	3.5" or 2.5" SATA(II) X4	3.5" or 2.5" SATA(II) X4	3.5" or 2.5" SATA(II) X4
Max Internal Capacity	16TB (4 X 4TB HDD)	16TB (4X 4TB HDD)	16TB (4X 4TB HDD)
Hot Swappable HDD
External HDD Interface	USB 3.0 Port X 2, USB 2.0 Port X 1, eSATA Port X 1	USB 2.0 Port X 2, eSATA Port X 1	USB 2.0 Port X 2
LAN	Gigabit X 2	Gigabit X1	Gigabit X1
Link Aggregation
Wake on LAN/WAN
Easy Replacement System Fan
Wireless Support (dongle)
Built-in Wireless Support
Noise Level	19.3 dB(A)	21.6 dB(A)	21.7 dB(A)
Power Consumption	44W (Access); 15W (HDD Hibernation);	29W (Access); 11W (HDD Hibernation);	30.8W (Access); 11W (HDD Hibernation);
Redundant Power Supply
Warranty	2 Years	2 Years	2 Years

Model name/option	DS412+	DS411	DS411j
Storage Management
Max Internal Volume #	512	128	128
Max iSCSI Target #	32	10	10
Max iSCSI LUN #	256	10	10
Supported RAID Type	Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10	Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 5+Spare, RAID 6, RAID 10	Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 5+Spare, RAID 6, RAID 10
File Sharing Capability
Max User Accounts	2048	2048	1024
Max Groups	256	256	256
Max Shared Folder	256	256	256
Max Shared Folder Sync Tasks	8	2	2
Max Concurrent CIFS/AFP/FTP Connections	512	256	128
Virtualization
VMware vSphere 5 with VAAI
VMware vSphere 4
Windows Server 2008
Windows Server 2012
Citrix Ready

Model name/option	DS412+	DS411	DS411j
Antivirus Essential
Antivirus by McAfee
Audio Station
Cloud Station
Maximum of Concurrent File Transfers	512
DHCP Server
Directory Server
DNS Server
Download Station
Maximum Concurrent Download Tasks	80	50	20
Glacier Backup
High Availability
HiDrive Backup
iTunes Server
Mail Server
Mail Station
Media Server
Photo Station
RADIUS Server
Surveillance Station
MAX IP cam # (Licenses required)	20	12	5
Total frame rate (FPS)	600 FPS @ VGA, 200 FPS @ 720p, 100 FPS @ 1080p	120 FPS @ D1 (NTSC：720x480, PAL：720x576), 30 FPS @ WXGA (1280x800)	50 FPS @ D1 (NTSC：720x480, PAL：720x576), 10 FPS @ WXGA (1280x800)
Syslog Server
Syslog Events per Second	400	100	50
Time Backup
Maximum Task Number	8	4	1
Video Station
Video Transcoding	Type 1 + Type 2
VPN Server
Maximum Connections	20	15	5
3rd Party Packages (See more)

(Updated : 2013/04/30)