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Qnap ES2486DC 24 Bay 2U Rackmount NAS Enclosure, Intel Xeon D-2142IT 8-Core CPU, 64 GB DDR4 System Memory Per Controller, 24x 2.5″ Drive Bays, 4x 10GbE SFP+ For Each Controller | ES2486DC-2142IT-128G

Qnap ES2486DC 24 Bay 2U Rackmount NAS Enclosure, Intel Xeon D-2142IT 8-Core CPU, 64 GB DDR4 System Memory Per Controller, 24x 2.5″ Drive Bays, 4x 10GbE SFP+ For Each Controller | ES2486DC-2142IT-128G

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Qnap ES2486DC 24 Bay 2U Rackmount NAS Enclosure, Intel Xeon D-2142IT 8-Core CPU, 64 GB DDR4 System Memory Per Controller, 24x 2.5″ Drive Bays, 4x 10GbE SFP+ For Each Controller | ES2486DC-2142IT-128G

Active-Active high availability with optimal storage efficiency

In Active-Active storage system architecture, both controllers can provide a comprehensive range of services, which is different from the Active-Standby architecture of single-controller systems. An advantage of Active-Active architecture is the lack of idle computing resources. To leverage the strengths of the ES2486dc Active-Active controller architecture, QNAP recommends creating multiple storage pools and distributing ownership between both controllers to enable simultaneous output from both controllers for improved load balancing.

  • Active-Standby single-controller system

    With two HA systems you are paying twice the price, and the HA system can cause load imbalances because workloads are only processed on the active system. Moreover, a power outage can cause data loss, while network disconnections will invalidate the HA architecture.

  • Active-Active dual-controller system

    Both controllers of the ES2486dc can carry traffic, along with Copy-To-Flash protection against power failure and the dual-path SAS interface design. Besides conserving computing resources, a high-speed, uninterrupted, and high-availability storage service is also provided through communication protocols such as SMB, NFS and iSCSI.

Multi-level cache technology with read and write support boosts storage performance

The ES2486dc simultaneously supports read caches including primary cache (L1 ARC), SSD cache as a secondary cache (L2 ARC), and write cache ZFS Intent Log (ZIL) for synchronous transactions to meet performance demands for various enterprise applications.

Use SAS or SATA SSDs flexibly within your IT budget

Although SATA 6Gbps SSDs provide high-performance affordable storage, this type of drive is unsuitable for dual-controller environments because it lacks dual-port support. By using a QDA-SA3 adapter specially designed for QNAP all-flash Enterprise ZFS NAS, a SATA 6Gbps drive can be used in the 2.5-inch SAS drive bay of the ES2486dc— allowing storage capacity expansions with cost-effective SATA drives. By installing a SATA SSD with the QDA-SA3 into the dual-controller ES2486dc, the SATA SSD can share SAS dual-port advantages to ensure a high-availability and fault-tolerant enterprise storage environment.

PCIe expansion for 25GbE high-speed networks

The ES2486dc provides two PCIe Gen 3.0 x8 slots connected to the CPU, allowing you to install lightning-fast 10GbE/25GbE network cards to boost virtualization, media streaming, and other bandwidth-demanding applications. Installing a Smart NIC that supports iSER can improve VMware® virtualization performance. You can also install a SAS expansion card ( SAS-12G2E ) for connecting up to seven 16-bay EJ1600 v2 expansion enclosures to seamlessly expand potential storage capacity to over 1PB, with unprecedented performance of up to 48 Gbps per host connection.

CPU Intel® Xeon® D-2142IT 8-core 1.90 GHz processor, up to 3.0 GHz
CPU Architecture 64-bit x86
Floating Point Unit Yes
Encryption Engine Yes (AES-NI)
System Memory 64 GB RDIMM DDR4 ECC (4 x 16 GB) 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)
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 Yes
SSD Cache Acceleration
Read cache only
Cache for Copy To Flash
1 per each controller (64GB M.2 SSD)
Gigabit Ethernet Port
3 for each controller (one for remote management)
10 Gigabit Ethernet Port 4 x 10GbE SFP+ for each controller
Wake on LAN (WOL) Yes
Jumbo Frame Yes
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
Safety Standard FCC Class A (USA only)
CE Mark ( EN55022 Class A, EN55024)

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