Hardware Specifications

CPU Frequency : Dual Core 2.13GHz
Floating Point
Memory : DDR3 1GB (Expandable, up to 3GB)
Internal HDD/SSD : 3.5" or 2.5" SATA(II) X4(Hard drive not included)
Max Internal Capacity : 16TB (4X 4TB HDD)(Capacity may vary by RAID types) (See All Supported HDD)
Hot Swappable HDD
External HDD Interface : USB 2.0 Port X 2, eSATA Port X 1
Rail Kit: Synology 1U Rail Kit Sliding / Synology 1U Rail Kit Fixed (optional)
Size (HxWxD) : (RS812+) 44 X 430.5 X 457.5, (RS812RP+) 44 X 430.5 X 570.5mm
Weight : 7.1kg (RS812+), 9.42kg (RS812RP+)
LAN : Gigabit X2
Link Aggregation
Wake on LAN/WAN

Notes :

Noise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the DiskStation front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%;
Power consumption is measured when fully loaded with Western Digital 3TB WD30EZRS hard drive(s).

Applications

File Station
Virtual Drive
Remote Folder
Backup Solutions
Network Backup
Local Backup
Desktop Backup (Windows: Synology Data Replicator 3, Mac: Apple Time Machine backup application)
Max Shared Folder Sync Tasks : 8
Configuration Backup
FTP Server
Bandwidth Control, Custom FTP Passive Port Range, Anonymous FTP, Transfer Log
Web Station
Virtual Host (up to 30 websites)
PHP/MySQL
3rd party Applications Support.

Print Server
Max Printer # : 2
Printing Protocols : LPR, CIFS, IPP, Google Cloud Print, Multi Functional Print Server (for Windows PC only)
iOS/Android Applications
DS photo+
DS audio
DS cam
DS file
DS finder
DS download(Only available on iOS)
DS video(Only available on iOS)
Windows Phone Applications
DS audio
DS finder
DS photo+

Photo Station
Surveillance Station
MAX IP cam # (Licenses required) : 20(1 Free License) (See All Supported IP Cameras
Total frame rate (FPS) : 200 FPS @ 720p (1280x800)
Syslog Server
Syslog Events per Second : 800
Time Backup
Maximum Task Number : 8
Video Station
VPN Server
Maximum Connections : 20
3rd Party Packages (See all)

Notes :

Surveillance Station throughput is tested with Axis M1054 (1280X800); FPS set to 10 at every channel; Compression rate: 30%; Video Codec: MJPEG, H.264; Recording Type is conducted with Motion Detection Recording (By camera) and Continuous Recording; Actual performance may vary depending on camera settings and DiskStation loading.

Networking Protocols
CIFS
AFP
NFS
FTP
WebDAV
CalDAV
iSCSI
Telnet
SSH
SNMP
VPN (PPTP, OpenVPN)
File System
EXT4
EXT3 (External Disk Only)
FAT (External Disk Only)
NTFS (External Disk Only)
Storage Management
Max File System Size : 108TB
Max Internal Volume # : 512
Max iSCSI Target # : 32
Max iSCSI LUN # : 256
Supported RAID Type : Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 5+Spare, RAID 6, RAID 10
RAID Migration : Basic to RAID 1, Basic to RAID 5, Basic to RAID 5+Spare, RAID 1 to RAID 5, RAID 1 to RAID 5+Spare, RAID 5 to RAID 5+Spare, RAID 5 to RAID 6
Volume Expansion with Larger HDDs : Synology Hybrid RAID, RAID 1, RAID 5, RAID 5+Spare, RAID 6
Volume Expansion by Adding a HDD : RAID 5, RAID 5+Spare, RAID 6
Synology Expansion Unit Support : RX410
File Sharing Capability
Max User Accounts : 2048
Max Groups : 256
Max Shared Folder : 256
Max Concurrent CIFS/AFP/FTP Connections : 512
Windows Access Control List (ACL)
Windows AD Domain Integration
Domain Users login via Samba/AFP/FTP/File Station
Virtualization
VMware vSphere 5
VMware vSphere 4
Windows Server 2008
Windows Server 2012
Citrix Ready

Security
FTP over SSL/TLS
IP Auto-Block
Firewall
Encrypted Network Backup over Rsync
HTTPS Connection
Management
Auto DSM Upgrade
Administrator Group
Push Notification MSN/Skype/Mobile Devices
Email/SMS Notification
Customized User Quota
Syslog Support
DDNS Support
IPv6 Support
VLAN Support
PPPoE
Hotspot
Resource Monitor
Connection Manager
UPS Management
Scheduled Power On/Off
Custom Management UI HTTP/HTTPS Ports
HDD Management
HDD Hibernation
S.M.A.R.T.
Dynamic Bad Sector Mapping
Utilities
Synology Assistant
Synology Data Replicator
Supported Clients
Windows XP onward
Mac OS X 10.5 onward
Ubuntu 9.04 onward
Supported Browsers
Chrome
Firefox
Internet Explorer : 8, 9
Safari (MAC) : 5
Language
English, Deutsch, Franais, Italiano, Espaol, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Portugus do Brasil, Portugus Europeu, Trke, Česk, 日本語, 한국어, 繁體中文, 简体中文