QNAP ES1640dc
16-Bay Active-Active Dual Controller ZFS NAS and iSCSI/ IP-SAN. 3U, SAS/SATA 6G, 2 x10GbE(10GBase-T), 40GbE-ready.

Features:

Dual controller NAS: high reliability and high availability

“Reliability” is the primary priority for mission critical business applications. The ES1640dc adopts dual active-active controllers to provide the most reliable base for business IT storage.

1. Dual active-active controller

If one controller fails, the other one will immediately take over to provide high availability with the least downtime.

2. Built-in 2 x 10GbE RJ45 ports

Meets various iSCSI/NFS/CIFS network data transmission requirements.

3. 40GbE NIC support

The PCIe slot supports a dual-port QSFP+ 40GbE NIC to provide massive data transmission potential and to simplify network cabling.

4. SAS 6Gb/s hard drive and SATA SSD

Dual-controller architecture that supports SAS 6Gb/s hard drives / SSDs and SATA SSDs, providing versatile storage choices for enterprises.

5-1. NVRAM w/ Copy-to-Flash

Battery-protected DRAM write to cache data protection and Flash read acceleration provides industry-leading random access performance to benefit virtual machine deployment.

5-2. DDR3 RAM

(1) NVRAM dedicated DDR3 memory modules - supports 16GB, power required by C2F is supplied by BBU.
(2) Dual-channel DDR3 system main memory - each channel supports 16GB, providing up to 32GB total capacity.

5-3. mSATA SSD

Stores cache data written by DRAM to ensure information is not lost if the system experiences a sudden power failure.

6. Dual Path Mini-SAS 6Gb/s (EJ1600) JBOD architecture

Increases the ES1640dc’s potential storage capacity to over 1 PB with expansion enclosures.

7. Intel® Xeon® E5-2400 v2 series processor

Provides the performance required by software-defined storage and commercial mission-critical applications.

8. Field-replaceable unit

Field-replaceable unit (FRU) applies not only to the controllers but also to the cooling fans, power supplies, and the BBU battery pack for C2F (Copy-To-Flash), providing a cost-effective way to maintain complex systems and to replace defective parts.

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NVRAM cache reducing the risks of losing write cache data

To increase random write performance and reliability, the ES1640dc features NVRAM modules (DRAM Write Cache with Copy-to-flash) to protect write data. When data is written into NVRAM, there are dedicated backup battery units to protect writing to the cache, and at the same time the data is replicated to a backup controller, to achieve 100% data integrity. NVRAM-backed write cache in the dual-controller architecture presents high performance, fault-tolerant, and helps reduce flash SSD write amplification.

*To ensure write cache data safety, it is recommended to annually replace the BBU.

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QES operating system combining ZFS file system

The ES1640dc features the brand-new QES (QNAP Enterprise Storage) operating system, which is based on the simple and efficient FreeBSD kernel and the ZFS file system that has been proven through years of experience to be most suitable for high-end enterprise applications. QES supports dual active controller architecture and remote disaster recovery, can be directly integrated into OpenStack® cloud environments, and is designed for intensive virtualization and VDI applications with optimal performance. Continuing the same user experience with the QTS operating system, QES provides business users with an easy learning curve to quickly deploy the ES1640dc, and provides the best storage solution jointly with the current QNAP NAS.

Overview of QNAP Enterprise ZFS NAS and the QES operating systems

	QES QNAP Enterprise System	QTS QNAP Turbo NAS System
Hardware platform	Enterprise ZFS NAS ES series NAS	QNAP Turbo NAS TS / TVS / TAS / TDS series
Operating system kernel	FreeBSD	Linux
File system	ZFS	Ext4
myQNAPcloud	Yes	Yes
App support	Qmanager, Qfile	All available apps
File Station	Yes	Yes
App Station	No	Yes
Virtualization Station	No	Yes
Container Station	No	Yes
Dual active controller	Yes	No
NVRAM (Write to cache)	Yes	No
40G Ethernet network	Yes	Yes
Intel Quick Assist	No	Yes
Snapshot upper limit	65536	1024
Single LUN snapshot upper limit	65536	1024
Deduplication	Yes	No
Real time data compression	Yes	No
End-to-End Data Integrity	Yes	No
Application consistency	Snapshot Agent VSS Hardware Provider (QNAP NetBak Replicator)	Snapshot Agent VSS Hardware Provider (QNAP NetBak Replicator)
Remote disaster backup and recovery	SnapSync	Snapshot Replica

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ZFS – the best file system for business data storage

The ES1640dc features ZFS, a combined file system and logical volume manager, to support various advanced functions for high-end enterprise storage, including powerful storage expansion, flexible storage pools, simplified management, high-performance SSD cache, nearly limitless snapshots and cloning, data deduplication, in-line compression and thin provisioning with reclaim for optimized utilization for virtual machine storage. ZFS is designed with a focus on data integrity, and uses its end-to-end checksums to detect and correct silent data corruption caused by hardware defects, bugs in firmware or metadata errors, effectively protecting user’s data.

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Deduplication and compression to maximize VDI storage performance

There could be over 90% duplicate data from OS images and applications that are spread over virtual desktops. The ES1640dc supports block-based data deduplication to optimize storage usage from redundant data. Deduplicated virtual desktops become easier to be cached to achieve optimal virtual desktop performance. In-line data compression helps shrink data size, further optimizing storage usage. For mastering storage in a virtualized environment, the ES1640dc provides businesses with the most cost-effective remote virtual desktop platform and mission-critical information warehousing.

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Strong disaster recovery made by nearly limitless snapshots and SnapSync

The ES1640dc supports up to 65,536 snapshots for iSCSI LUN and shared folders. When executing a remote snapshot backup, it only needs to transfer changed data, and can use deduplication and compression to significantly reduce the amount of transferred data. The ES1640dc can provide remote backup SnapSync for snapshots at the shortest interval of every five minutes, fully supports VMware vCenter Site Recovery (SRM) technology, provides Storage Replication Adapter (SRA) for SRM, and provides enterprise-class remote backup & disaster recovery solution to fulfill business continuity.

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Well-rounded backup solutions to secure data

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Compatible with HPE Helion for extending horizons to OpenStack cloud

As QNAP’s first "OpenStack Ready" product line, the ES1640dc is not only suitable for virtualization and virtual desktop environments but also the best choice for cloud applications. QES supports OpenStack® Cinder and iSCSI Cinder Node drivers, and provides block-level storage space to virtual machines. It not only accelerates the deployment of virtual machines and enhances virtual machine image access efficiency through iSCSI, but it is also easier to integrate into commercial cloud storage platforms. QES can be easily coupled with HPE Helion* to provide simpler and more reliable private enterprise hybrid cloud solutions, to ensure that enterprises can still enjoy uninterrupted, highly available, highly-stable services in dense virtualized environments.

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Seamless capacity expansion

The ES1640dc supports efficient capacity expansion by cascading multiple QNAP RAID expansion enclosures to meet the needs of growing business data, providing businesses a cost-efficient storage solution for large data archiving and virtualization applications.

Featuring dual controllers, dual-loop architecture, the ES1640dc and the corresponding JBOD expansion enclosures all provide dual-channel (Dual Path) to tolerate single node failure. Even if an external JBOD cable is disconnected due to external damage to the mini-SAS cable, it can still run normally. This is essential for better intermachine data protection and capacity scalability.

The maximum total storage capacity available by connecting RAID expansion enclosures:

NAS Model	RAID Expansion Enclosure	No. of RAID Expansion Enclosure	Total HDD No. (NAS + Enclosure)	Max. Raw Capacity (TB)*
ES1640dc	EJ1600	7	128	1024
		6	112	896
		5	96	768
		4	80	640
		3	64	512
		2	48	384
		1	32	256