QNAP ES2486dc NAS Rack (2U) Ethernet LAN Black D-2142IT 24x 2.5 Intel Xeon D-2142IT 48 GB RDIMM DDR4 ECC 4 GB Flash SFP+ LAN 700W 90-264V 88.3 x 483 x 545.1 mm 27.41kg. Powerful & cost-efficient Intel Xeon D based Enterprise ZFS NAS optimized for inline deduplication & all-flash applications The ES2486dc Enterprise ZFS NAS is QNAP’s first high-availability NAS with all-flash arrays & 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 12 Gbps SSDs & 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 & inline compression reduce I/O & SSD storage consumption which significantly extends SSD lifespan with higher price-performance ratio for all-flash storage arrays. 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 & distributing ownership between both controllers to enable simultaneous output from both controllers for enhanced load balancing. Active-Standby single-controller system With two HA systems you are paying twice the price & 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 & the dual-path SAS interface design. Besides conserving computing resources a high-speed uninterrupted & high-availability storage service is also provided through communication protocols such as SMB NFS & i SCSI. Intel Xeon D dual controllers optimize inline deduplication & SSD workloads Powered by Intel Xeon D-2142IT 8 cores/16 threads processors the ES2486dc delivers massive computing power to maximize inline data deduplication & inline compaction performance. The dual active-active controller architecture provides failover/failback operations since the standby controller can quickly take over if one controller breaks down. Redundant hot-swappable power supplies & cooling fans also provide businesses with near-zero downtime & high availability. The ES2486dc connects to the JBOD enclosure (EJ1600 v 2) through dual-path mini-SAS design & can sustain continuous operations even if a JBOD cable is disconnected. Multi-level cache technology with read & write support boosts storage performance The ES2486dc simultaneously supports read caches including primary cache (L1 ARC) SSD cache as a secondary cache (L2 ARC) & 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 6 Gbps 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 6 Gbps drive can be used in the 3.5-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 ES24