The ES2486dc Enterprise ZFS NAS is QNAP’s first high-availability NAS with all-flash arrays and dual active controllers. Powered by an Intel® Xeon® D-2142IT 8 cores/16 threads processor, the ES2486dc supports up to 24 x 2.5-inch SAS 12Gbps SSDs and provides excellent I/O throughputs. Random write performance for all-flash arrays is further driven by the flash-optimized QES 2.1.1 operating system that comes pre-installed on the ES2486dc. The QES uses ZFS to support logical volume management; block-based inline data deduplication and inline compression reduce I/O and SSD storage consumption, which significantly extends SSD lifespan with higher price-performance ratio for all-flash storage arrays. Coupled with near-limitless snapshots and SnapSync for data protection, the QES-based ES2486dc fulfills demanding business applications, such as mission-critical file servers, virtualization servers, VDI, medium-sized data center, video streaming, surveillance storage, and efficient file backup and recovery.

CPU	Intel® Xeon® D-2142IT 8-core 1.90 GHz processor, up to 3.0 GHz
CPU Architecture	64-bit x86
Floating Point Unit
Encryption Engine	(AES-NI)
System Memory	48 GB RDIMM DDR4 ECC (4 x 4 GB+4 x 8GB) per controller
Maximum Memory	512 GB (8 x 64GB)
Memory Slot	8 x R-DIMM/LR-DIMM DDR4 IMPORTANT: You can only use one type of dual in-line memory module (DIMM) at a time. Do not use registered DIMM (RDIMM) with load-reduction DIMM (LRDIMM) memory.
Flash Memory	4GB (Dual boot OS protection)
Drive Bay	24 x 2.5-inch SAS 12Gb/s, backward-compatible to SAS 6Gb/s
Drive Compatibility	2.5-inch bays: 2.5-inch SAS/SATA hard disk drives 2.5-inch SAS/SATA solid state drives 1. When installing SATA HDD/SSD, QDA-SA3 adapter is required. 2. The QDA-SA3 adapter is designed for QNAP Enterprise ZFS NAS and allows the use of a SATA 6Gbps drive in a 2.5-inch SAS drive bay
Hot-swappable
SSD Cache Acceleration Support	Read cache only
Cache for Copy To Flash (C2F)	1 per each controller (64GB M.2 SSD)
Gigabit Ethernet Port (RJ45)	3 for each controller (assign one for remote management)
10 Gigabit Ethernet Port	4 x 10GbE SFP+ for each controller
Wake on LAN (WOL)
Jumbo Frame
PCIe Slot	2 per controller Slot 1: PCIe Gen 3 x8 (CPU) Slot 2: PCIe Gen 3 x8 (CPU) Card dimensions for PCIe slot 1~Slot 2：215 x 68.9 x 18.76 mm / 8.46 x 2.71 x 0.74 inches. Wider cards can be installed if the next PCIe slot will not be used.
USB 3.2 Gen 1 port	2 per each controller Note: The USB ports are for engineering purpose only. No external devices such as storage drives or UPS are supported.
Form Factor	2U Rackmount
LED Indicators	System Power LED (Green): on/off System Status (Green/ Orange): in operation, system errors, low power, degraded RAID mode, memory failure, fan/power supply failure, system/disk temperature too high, storage pool reaching threshold value, system performing take-over, power supply unit unplugged LCD Status Display (Two-digit number): Status of JBOD connection
Buttons	Power, Reset
Dimensions (HxWxD)	88.3 × 446.2 × 504.1 mm
Weight (Net)	23.4 kg
Weight (Gross)	27.4 kg
Operating Temperature	0 - 40 °C (32°F - 104°F)
Storage Temperature	-20 - 70°C (-4°F - 158°F)
Relative Humidity	5-95% RH non-condensing, wet bulb: 27˚C (80.6˚F)
Power Supply Unit	Redundant/ Hot Swap Power Vin:90~264VAC;700W
Power Consumption: Operating Mode, Typical	579.59 W Tested with drives fully populated.
Fan	Hot-swappable fan module (60*60*38mm; 16000RPM/12v/2.8A x 3)
System Warning	Buzzer
Standard Warranty	5
Max. Number of Concurrent Connections (CIFS) - with Max. Memory	10000
Safety Standard	FCC Class A (USA only) CE Mark ( EN55022 Class A, EN55024) EN60950 BSMI VCCI CB LVD