QNAP TVS-EC1680U-SAS-RP R2 is the world's first unified NAS supporting Auto Tiering to deliver ongoing optimization of data across high-performance SSD, 12Gbps SAS drives and high-capacity SATA disks. Powered by an Intel® Xeon E3 CPU, the 40GbE-ready TVS-EC1680U-SAS-RP R2 delivers exceptional performance and supports cross-platform file sharing, comprehensive backup solutions, iSCSI & virtualization applications, and more practical business functions. With the powerful QTS operating system, the TVS-EC1680U-SAS-RP R2 performs as a reliable, scalable and unbeatable unified and tiered storage solution for businesses.

• Built-in 10GbE, highly-efficient storage solution with high speed network for HD video editing and sharing
• 3,800+ MB/s throughput and 268,000+ IOPS
• Qtier Technology drives Auto Tiering for optimal storage efficiency
• Built-in 256GB mSATA modules for caching, beneficial to IOPS-demanding applications
• Scalable design, up to 1,152 TB total capacity
• Virtualization-ready, centralized data storage, backup, sharing and disaster recovery
• Backward compatible with SAS/SATA 6Gbps drives

CPU	Intel® Xeon® E3-1246 v3 Family 3.5 GHz Quad-core Processor
Memory	Total memory slots: 4 TVS-EC1680U-SAS-RP-8GE-R2: System memory: 8 GB DDR3 ECC RAM Memory module pre-installed: 4 GB x2 Memory expandable up to: 32 GB (8GB x4) TVS-EC1680U-SAS-RP-16G-R2: System memory: 16 GB DDR3 non-ECC RAM Memory module pre-installed: 8 GB x2 Memory expandable up to: 32 GB (8GB x4)   Note: When upgrading RAM to more than 28GB, the original 4GB RAM modules must be removed. For the information of RAM module installation and compatible NAS models, please refer to the QNAP RAM Module Installation Guide
Flash Memory	512MB DOM
Internal Cache Port	Two mSATA port on board for read caching. The standard system is shipped with two 128GB mSATA flash. For the optional mSATA flash, please visit http://shop.qnap.com/
Hard Drive	16 x 3.5-inch SAS 12Gbps, SAS/SATA 6Gbps/3Gbps hard drive or 2.5-inch SAS/SATA SSD hard drive NOTE: The standard system is shipped without hard drives. For the hard drive compatibility list, please visit https://www.qnap.com/compatibility
Hard Drive Tray	16 x hot-swappable and lockable tray
LAN Port	Built-in 2 x 10 GbE (SFP+) and 4 x GbE 40GbE is optional Note: 1. For the optional network card compatibility list, please visit Compatibility list 2. For the information of network card installation, please refer to chapter 6 in the Turbo NAS Hardware Manual.
LED Indicators	10 GbE, Status, LAN, Storage expansion port status
USB	4x USB 3.0 port (rear) 4x USB 2.0 port (rear) Support USB printer, pen drive, USB hub, and USB UPS etc.
Buttons	System: Power button and reset button
Alarm Buzzer	System warning
Form Factor	3U, Rackmount
Dimensions	130(H) x 442.5(W) x 530.5(D) mm 5.12(H) x 17.42(W) x 20.89(D) inch
Weight	Net weight (NAS only) : 18.3 kg/40.34 lb Gross weight (with packing and accessories) : 24.18 kg/ 53.30 lb
Sound Level (dB)	Sound Level (dB) Sound pressure (LpAm) (bystander position): 40.1 dB (with 16 x HITACHI HUS724020ALA640 hard drive installed)
Power Consumption (W)	Sleep mode: 82.4 In Operation: 166.58 W (with 16 x HITACHI HUS724020ALA640 hard drive installed)
Temperature	0-40˚C
Relative Humidity	5~95% non-condensing, wet bulb: 27˚C.
Power Supply	Redundant power: Input 90~264VAC; 650W x 2
PCIe Slot	2 (Right slot: 1* PCIe Gen3 x8; Left slot: 1* PCIe Gen3 x4) Note: The PCIe Gen3 x8 slot is occupied by a 10GbE network adapter.
Fan	4 x 8 cm smart cooling fan
1. Power Button 7. HDMI 2. LED Indicators: 10 GbE, Status, LAN, Storage Expansion Port Status 8. 12G mini SAS connector 3. Password & Network Settings Reset Button 9. Console 4. USB 2.0 Port x 4 10. PCIe slot (PCIe Gen3 x4) 5. Gigabit LAN x 4 11. Dual port 10GbE SFP+ 6. USB 3.0 Port x 4 12. Power Connector