QNAP ES1686dc-R2-2142IT-128G 16-Bay Enterprise ZFS NAS

Active-Active architecture: 2 units in a single chassis

Note: It is recommended to create multiple storage pools and distribute their ownership between both controllers to leverage the strengths of the ES1686dc R2 active-active controller architecture. This allows simultaneous output from both controllers for better load balancing.

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  Active-Standby Architecture

  If the active system fails, the standby system starts up and takes over processing.

  • Requires purchasing two systems for HA, doubling the cost.
  • Causes load imbalance as only the active system processes workloads.
  • A power outage may lead to data loss.
  • Network disconnection invalidates the HA architecture, rendering it ineffective.

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  Active-Active Architecture

  Both systems are active simultaneously.

  • Both controllers handle traffic, optimizing workload distribution.
  • Copy-To-Flash protection safeguards data against power failure.
  • Dual-path SAS interface ensures seamless connectivity.
  • Efficient resource utilization, reducing computational waste.
  • High-speed, uninterrupted, and high-availability storage service.
  • Supports multiple communication protocols: SMB, NFS, and iSCSI.

Intel Xeon D processors bring high performance and efficiency

Tested in QNAP Labs. Figures may vary by environment.Learn more about test environment.

Multi-level cache technology

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  Multi-tier caching

  The ES1686dc R2 simultaneously supports main memory read cache (L1 ARC), SSD secondary read cache (L2 ARC), and memory write cache (ZFS Intent Log) to meet performance demands of various enterprise applications.

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  Expand main memory up to 512GB

  Both controllers have eight RDIMM slots, allowing for up to 512GB memory.

  The main memory will retain 8GB for use by the write cache.

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  NVRAM

  In the event of power failure, the system can write cache data from the battery-protected DRAM to M.2 SSD through Copy To Flash (C2F) to ensure that data is not lost.

  To ensure write cache data safety, it is recommended to annually replace the BBU. QNAP provides one-year warranty for the BBU.

PCIe Gen 3 slots

The ES1686dc R2 provides two PCIe Gen 3 x8 slots per controller connected to the CPU, allowing you to add additional functionality to meet growing workload and business requirements.

Whats the difference between QES and QuTS hero?

Self-healing ensures data integrity and reliability

Designed to ensure data integrity, the QES-based ES1686dc R2 uses end-to-end checksums to detect and correct silent data corruption caused by hardware defects, firmware bugs or metadata errors. If integrity violations are detected, QES automatically repairs the damage using data from the other mirror before the data is passed to applications.

Unleashed SSD potential agile and cost-effective for the ultimate performance

QES 2.2 features QNAPs exclusive Write Coalescing algorithm that further optimizes all-flash performance in ZFS, providing a highly cost-effective all-flash solution for enterprise data management and mission-critical services.

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  Write Coalescing

  Transforms all random writes to sequential writes along with reduced I/O. This not only increases random write performance for all-flash environments, but also improves SSD lifespan.

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  Pool over-provisioning

  Users can allocate additional over-provisioning for SSDs (from 1% to 60%) and Storage Pools (from 1% to 40%) for a constant performance boost of over 100%.

Deduplication and compression maximizes VDI storage performance

In VDI environments where there could be over 90% duplicate data from virtual desktop OS images and applications, the QES-powered ES1686dc R2 provides businesses with the most cost-effective remote virtual desktop platform and mission-critical information warehousing.

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  Inline data deduplication

  Block-based data deduplication optimizes storage usage and significantly decreases storage capacity requirements.

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  Inline compression

  Shrinks data to reduce storage I/O workloads for improved performance. In VDI, deduplicated virtual desktops are easily cached to achieve optimal virtual desktop performance.

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  Inline compaction

  Especially helpful for increasing SSD storage utilization efficiency when highly repetitive data or massive small files (such as transaction logs of banks or e-commerce) are generated. It delivers higher cost efficiency of all-flash storage systems.

Real-time SnapSync ensures minimal RPO with real-time disaster recovery

Real-time SnapSync ensures that both the primary and secondary NAS maintain identical data. When data is written to the source, it is immediately written to the destination. If the primary NAS goes offline, IT staff can simply adjust the privilege settings of the secondary NAS to ensure continuous operations. SnapSync provides the strongest support for nonstop business operations and helps users to reduce the risk of data loss.

Learn More:SnapSync

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  Business Continuity

  Copy-on-write technology makes QES snapshot creation almost instantaneous without affecting ongoing data writes. SnapSync supports incremental backups, real-time deduplication, and compression. The source ES1686dc R2 performs deduplication before compressing the metadata to reduce synchronized data and save bandwidth.

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  VMware SRM

  SnapSync supports VMware Site Recovery Manager (SRM) that offers enterprise-class remote backup and disaster recovery solutions for virtual applications. With the Storage Replication Adapter (SRA) for SRM, operation overheads of the ESXi server can be offloaded to a QNAP NAS to accelerate and simplify virtual machine backup/restore.

5-year warranty as standard

The ES1686dc R2 is backed by a 5-year warranty at no extra cost providing your business organization with greater peace of mind.