DiskStation DS1621xs+ DS1621xs+ Features: Built for High-Speed Connectivity. Combine built-in 10GbE and optional high-speed NIC for over 3,100 MB/s sequential read performance Boost Performance With SSD Cache. Built-in M.2 2280 NVMe SSD slots permit cache acceleration without using storage drive bays Flexibly Expand Storage Size. Flexibly scale up to 16 drives to increase storage capacity as demand grows Collaboration and Productivity Suite. Build an on-premises, multi-user collaboration environment with fine-grained controls Protect and Restore Data in a Snap. Back up critical data and reduce your Recovery Time Objective (RTO) with Snapshot Replication Leverage Native Virtualization Tools. Use virtualization storage tools to complete your SAN or run virtual machines on a full-featured hypervisor Fully Back Up Business Assets. Back up company data from PCs, public cloud, company servers, and virtual machines Specifications: CPU CPU Model Intel Xeon D-1527 CPU Quantity 1 CPU Architecture 64-bit CPU Frequency 4-core 2.2 (base) / 2.7 (turbo) GHz Hardware Encryption Engine (AES-NI) Yes Memory System Memory 8 GB DDR4 ECC SODIMM Memory Module Pre-installed 8 GB (8 GB x 1) Total Memory Slots 2 Maximum Memory Capacity 32 GB (16 GB x 2) Storage Drive Bays 6 Maximum Drive Bays with Expansion Unit 16 (DX517 x 2) M.2 Drive Slots 2 (NVMe) Compatible Drive Type 3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD M.2 2280 NVMe SSD Maximum Single Volume Size 200 TB (32 GB memory required) 108 TB Hot Swappable Drive Yes External Ports RJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support) RJ-45 10GbE LAN Port 1 USB 3.2 Gen 1 Port 3 eSATA Port 2 PCIe PCIe Expansion 1 x Gen3 x8 slot (x8 link) File System Internal Drives Btrfs EXT4 External Drives Btrfs EXT4 EXT3 FAT NTFS HFS+ exFAT Appearance Size (Height x Width x Depth) 166 mm x 282 mm x 243 mm Weight 5.3 kg Others System Fan 92 mm x 92 mm x 2 pcs Fan Speed Mode Full-Speed Mode Cool Mode Quiet Mode Easy Replacement System Fan Yes Brightness Adjustable Front LED Indicators Yes Power Recovery Yes Noise Level 25.2 dB(A) Scheduled Power On / Off Yes Wake on LAN / WAN Yes Power Supply Unit / Adapter 250 W AC Input Power Voltage 100 V to 240 V AC Power Frequency 50/60 Hz, Single Phase Power Consumption 62.85 W (Access) 34.26 W (HDD Hibernation) British Thermal Unit 214.45 BTU/hr (Access) 116.89 BTU/hr (HDD Hibernation) Temperature Operating Temperature 0°C to 40°C (32°F to 104°F) Storage Temperature -20°C to 60°C (-5°F to 140°F) Relative Humidity 5% to 95% RH Certification FCC CE BSMI EAC CCC KC VCCI RCM Warranty 5 years Environment RoHS Compliant Packaging Content Main Unit X 1 Accessory Pack X 1 AC Power Cord X 1 RJ-45 LAN Cable X 2 Quick Installation Guide X 1