Grade A1 - Excellent condition. Runs like new
Warranty included
Enjoy the peace of mind that your product is covered with a guarantee on both parts and labour.
As good as new
A1 graded refurbs are often just box opened returns that haven’t been used. They’re in perfect working condition and run like new. Our expert engineers have checked and tested every product for extra peace of mind.
What's included
All accessories are included unless otherwise stated in the description below.
Limited Stock
Our refurbished products sell out quickly, so be quick and get a fantastic product at a fraction of the new price.
Key Features
- Dual active controllers, NVRAM cache, dual mini-SAS channel backup, 40GbE-ready, SAS 12Gb/s-enabled
- QES operating system which is based on FreeBSD and ZFS
- Data deduplication and compression allows hosting over 500 VDI in one chassis
- Near-limitless snapshots and SnapSync for efficient disaster recovery
- NAS and iSCSI/IP-SAN storage supporting VMware®, Microsoft® Hyper-V, KVM and advanced virtualization features
- Fully supports OpenStack® iSCSI Cinder driver
- Scalable design, up to 1 PB total storage capacity
- 5 year warranty - Global warranty inclusive
E5 dual-controller for nearly zero downtime high-availability
The ES1640dc is powered by two E5-2400 v2 processors and features dual active-active controller architecture, ensuring businesses with nearly zero downtime high availability as the standby controller can quickly take over if one controller breaks down. The ES1640dc connects to the JBOD enclosure via the dual path mini-SAS design to sustain continuous operations even if an external JBOD cable is disconnected. Designed around redundancy, the ES1640dc is a great realization of reliable enterprise storage for uninterrupted mission-critical enterprise tasks and productivity.
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 reliable base for business IT storage.
NVRAM cache reducing the risks of losing write cache data
To increase random write performance and reliability, the ES1640dc features NVRAM modules 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.
QES operating system combining ZFS file system
The ES1640dc features the 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 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 a great storage solution jointly with the current QNAP NAS.
ZFS - the 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.
Strong disaster recovery made by nearly limitless snapshots and SnapSync
The ES1640dc supports up to 65,535 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.
What's in the Box
- QNAP ES1640DC
- 6 x network cable
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