Dual OS options system for versatility and high-availability
Powered by an Intel® Xeon® D processor, the powerful enterprise-class TES-1885U is open for two operating systems – either the FreeBSD-based QES or Linux-based QTS. While QES supports ZFS for the utmost reliability and allows near-limitless snapshots, block-level data deduplication and real-time data compression, QTS features Qtier Technology, SSD cache, and an abundance of value-added apps to realize storage efficiency and diverse usage applications. The TES-1885U gives the flexibility to choose from two operating systems, enabling businesses to deploy proper operating systems on multiple TES-1885U based on their needs and goals in different stages.
Note: To change the NAS operating system after completing setup, it is necessary to re-initialize the hard disks and delete all stored data. A remote backup is required before switching the NAS operating system.
Intel® Xeon® D processor optimizes performance and efficiency
Powered by an advanced 14nm Intel® Xeon® D-1531 6-core 2.2GHz 64-bit SoC processor with an integrated PCH, up to 128GB DDR4 ECC RDIMM RAM / 64GB DDR4 non-ECC UDIMM RAM, and with two built-in 10GbE SFP+ ports, the 12Gb/s SAS-enabled TES-1885U delivers outstanding performance for data transmission and applications. With a thermal design power of only 20-65W, the TES-1885U fulfills demands for both performance and energy saving.
Excellent hardware: immensely, durable & compact
The TES-1885U supports SAS 12Gb/s 3.5”/2.5” drives, allowing for SAS 12Gb/s and SATA 6Gb/s hard drives and SSDs. Businesses can create the most cost-effective storage by implementing suitable drives based on their needs.
1. Intel Xeon D multi-core processor
14nm energy-efficient SoC, supports DDR4 RAM and PCIe Gen.3 per-lane throughput.
2. DDR4 2133 MHz memory
Supports four DDR4 RAM modules for UDIMM and ECC RDIMM (up to 64GB UDIMM RAM, up to 128GB RDIMM RAM).
3. 12Gb/s SAS controllers
Supports 12Gb/s SAS hard drives and SSDs for fast data transfer and highly-reliable storage.
4. Hot swappable fans
Four hot-swappable 6cm cooling fans that can be quickly and easily replaced.
5. 2 x Built-in 10GbE SFP+ ports
Boosts iSCSI/NFS/CIFS network transfer for virtualization applications, data backup/restoration and massive data transmission.
6. 4 x Gigabit ports
Ideal for service binding, port trunking, and MPIO configurations.
7. 4 x PCIe slots
Three high-speed PCIe Gen.3 and one PCIe Gen.2; supports 10GbE/ 40GbE adapters and PCIe NVMe SSD.
8. 6 x 2.5” SATA SSD slots
Used for caching, high-performance storage pools, or the QES OS drive.
5-year warranty: Global warranty inclusive
The TES-1885U is backed by a 5-year warranty with 3-year global warranty inclusive at no extra cost. This premier warranty demonstrates QNAP’s dedication to the essential business needs of continuous operations and non-interrupted services to their users.
Dual OS options system inside a single rackmount NAS
The TES-1885U provides flexibility for choosing between uncompromising reliability and greater versatility. The QES operating system is suited for enterprise-level storage with maximized business continuity, or the QTS operating system for enjoying application storage for greater functionality.
Comparison of QES and QTS
QNAP Enterprise System
QNAP Turbo NAS System
Online data compression
SSD read cache
SSD read/write cache
Read cache only
Qtier (Auto Tiering)
Application Services (Virtualization Station, Web Server, multimedia service, etc.)
Reliable storage for mission-critical business tasks.
The perfect backup storage for the dual-controller Enterprise ZFS NAS.
High-performance storage with SSD and Qtier technology for maximized cost-efficiency.
Storage for hosting virtual machines and containerized applications using Virtualization Station and Container Station.
Application server using QTS services (Web server, VPN server, FTP server, etc).
QES operating system based on FreeBSD & ZFS
The TES-1885U supports 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. Continuing the same user experience with the QTS operating system, QES provides business users with an easy learning curve to quickly deploy the TES-1885U, and provides the best storage solution jointly with the current QNAP NAS.
Note: TES-1885U requires at least 32GB RAM to run QES operating system.
ZFS – the best file system for business data storage
The TES-1885U 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, RAID-Z for data protection, simplified management, high-performance SSD cache, nearly limitless snapshots and cloning, data deduplication, in-line compression, self-healing, 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.
Deduplication and compression to maximize VDI storage performance
All-flash storage featuring high-performance random I/O is advantageous for databases, online transaction processing (OLTP), and virtual desktop infrastructure (VDI) applications. Though the cost of all-flash storage is higher than using normal hard drives, data deduplication and compression technology can greatly assist in storing more data in less storage space with greater cost-efficiency and performance gains. Using VDI for example, there could be over 90% duplicate data from OS images and applications that are spread over virtual desktops. The TES-1885U 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 TES-1885U provides businesses with the most cost-effective remote virtual desktop platform and mission-critical information warehousing.
Strong disaster recovery made by nearly limitless snapshots and SnapSync
The TES-1885U 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 TES-1885U 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.
Well-rounded backup solutions to secure data
QNAP NetBak Replicator is easy-to-use and VSS-aware backup software, and helps businesses to create complete backups in datacenter and virtualization environments without needing to purchase expensive and complex commercial software. To build a QNAP Snap Agent and VSS Hardware Provider operating environment, all applications (including VSS Service, Requestor, Provider and QNAP Snap Agent) can be deployed with VSS-Aware applications on the same server, and the minimal requirements are only one TES-1885U and one server for it to be operational.
Storage for comprehensive virtualization applications
The TES-1885U supports VMware® vSphere™ 6.0 and Citrix® XenServer™ 6.0, and is compatible with Microsoft® Hyper-V®, benefiting flexible deployment and management in virtualization environments. The TES-1885U supports VMware VAAI and Microsoft ODX to increase performance by offloading server loading for ESXi server and Hyper-V respectively, and supports QNAP vSphere Client plug-in, Web plug-in and QNAP SMI-S provider with enhanced efficiency of operations and management in virtualization applications.
Ideal backup NAS for Enterprise ZFS NAS
When running the QES operating system, the TES-1885U is the perfect backup storage for the dual-controller Enterprise ZFS NAS using SnapSync. If the Enterprise ZFS NAS unexpectedly stops, the TES-1885U can immediately recover all the backed up data locally to take over operations and services with maximized uptime. It prevents the downtime required to restore data from a remote QTS NAS/rsync server back to the recovered Enterprise ZFS NAS, making the TES-1885U the best option to pair with the Enterprise ZFS NAS as a backup NAS to achieve optimal recovery time objectives.
TES-1885U-D1531-128GR (By Request)
TES-1885U-D1531-64G (By Request)
TES-1885U-D1531-32GR (By Request)
TES-1885U-D1531-32G (By Request)
TES-1885U-D1521-32GR (By Request)
TES-1885U-D1521-16GR (By Request)
Intel® Xeon® Processor D-1531, 6-core 2.2 GHz
Total DIMM slots: 4
Maximum memory: DDR4 128 GB ( 32 GB RDIMM x 4 )
Memory modules pre-installed:
TES-1885U-D1531-128GR: 128 GB ECC RAM ( 32 GB RDIMM x 4 )
TES-1885U-D1531-32GR: 32 GB ECC RAM ( 8 GB RDIMM x 4 )
TES-1885U-D1531-16GR: 16 GB ECC RAM ( 8 GB RDIMM x 2 )
TES-1885U-D1531-64G: 64 GB non-ECC RAM (16 GB UDIMM x 4 )
TES-1885U-D1531-32G: 32 GB non-ECC RAM ( 16 GB UDIMM x 2 )
TES-1885U-D1521-32GR: 32 GB ECC RAM ( 8 GB RDIMM x 4 )
TES-1885U-D1521-16GR: 16 GB ECC RAM ( 8 GB RDIMM x 2 )
TES-1885U-D1521-8GR: 8 GB ECC RAM ( 4 GB RDIMM x 2 )
Note: TES-1885U requires at least 32GB RAM for running QES operating system.
4 GB DOM
Hard Drive Tray
Front: 2.5" / 3.5" x 12
Rear: 2.5" SSD slot x 6
Supported Hard Drive
Front: SAS 12Gb/s, SAS 6Gb/s, SATA 6Gb/s HDD and SSD
Rear: SATA 6Gb/s SSD
2 x SFP+ 10GbE ports, 4 x Gigabit ports
10 GbE, Status, LAN, Storage expansion port status
System: Power button and reset button
Dimensions (H x W x D)
88 x 442.5 x 530.5 mm
3.46 x 17.42 x 20.89 inch
Net weight (NAS only): 15.1 kg / 32.28 lb
Gross weight (with packing and accessories): 21.41 kg / 47.20 lb
5~95% non-condensing, wet bulb: 27˚C.
Redundant power: Input 90~264VAC; 450W x 2
Slot 1: PCIe Gen.3 x8
Slot 2: PCIe Gen.2 x4
Slot 3: PCIe Gen.3 x4
Slot 4: PCIe Gen.3 x4 or PCIe Gen.3 x8
Note: Slot 4 provides the width of PCIe Gen.3 x8 when slot 3 is not in use. Slot 4 then provides the width of PCIe Gen.3 x4 only when an expansion board is installed in slot 3.
4 x 6 cm smart cooling fan
Designs and specifications are subject to change without notice.
| Stock code || IBQ-RT1885-32G|
| Brand || Qnap|
| Series || 19"Rack Enterprise NAS|
| Model || TES-1885U-D1531-32G|
| Type || 18-Bay, 2U, 12x 12Gb SAS/SATA HD + 6x SATA SSD, (32GB RAM, Xeon 6-core) + 10GbE|
| UPC || 885022011698|
| ROHS || Y|
| Date added || 26/09/2016|
TES-1885U-D1531-32G Spec Information
TES-1885U-D1531-32G Spec Connections
|PCIe||PCIe v3 x8||Internal||1|
|PCIe||PCIe v3 x4||Internal||3|
| Speed/RPM || 12Gb SAS/SATA to Gigabit Ethernet (1,000 Mbit/s)|
| Weight (kg) || 21.41kg|
| Weight (bare) || 15.1kg|
| Watts || Redundant 450W|
| Colour || Black|