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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsThe Synology RackStation RS18017xs+ is a capable 12-bay, 2U enterprise NAS with dual 10GbE, ECC memory and support for large SAS expansion shelves—but it is now discontinued, and Synology lists technical support as limited. It makes most sense for organizations with a verified unit and a specific need for its hardware, not buyers seeking a straightforward current-generation platform.
What the RS18017xs+ offers
Synology introduced the RS18017xs+ in 2017 as a high-end rackmount storage system. Its core appeal is the combination of twelve SAS/SATA drive bays, two built-in 10GBase-T ports, ECC memory and an expansion path using compatible Synology SAS shelves.
| Specification | RS18017xs+ |
|---|---|
| Chassis | 2U rackmount; 88 × 482 × 724 mm with rack ears; 14.5 kg (Synology Hardware Installation Guide) |
| Drive bays | 12 internal 3.5-inch or 2.5-inch SAS/SATA bays (Synology Hardware Installation Guide) |
| Processor | Intel Xeon D-1531, six cores (Synology 2019 datasheet) |
| Memory | 16 GB DDR4 ECC RDIMM standard; up to 128 GB supported (Synology 2019 datasheet) |
| Built-in networking | Two 10GBase-T RJ-45 ports and four 1GbE RJ-45 ports (Synology Hardware Installation Guide) |
| Expansion slots | Two PCIe 3.0 x8 slots for add-on network cards (Synology 2019 datasheet) |
| Internal filesystems | Btrfs and ext4 (Synology Hardware Installation Guide) |
| Supported RAID/storage modes | Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10 (Synology Hardware Installation Guide) |
How fast is the RS18017xs+ over 10GbE?
Published results depend on the test configuration, so Synology’s advertised figures should not be treated as a guaranteed speed for an individual deployment.
Synology’s manufacturer figures
In its 2019 datasheet, Synology advertised more than 4,800 MB/s sequential read throughput and 568,000 sequential read IOPS using a configuration with six 10GbE ports and link aggregation. Synology cautioned that results vary with environment, usage and configuration. These are vendor figures, not independent measurements.
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#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
IT Pro’s 2017 hands-on tests
Dave Mitchell’s IT Pro review, published 11 August 2017, used Iometer with a Lenovo System x3550 M5 running Windows Server 2012 R2 and a Broadcom 10GBase-T card. With one mapped share and 256 KB requests, the review measured 9.2 Gbit/s read and 9 Gbit/s write. With two servers connected through separate 10GbE ports, it reported cumulative read/write throughput of 18.4/14 Gbit/s. These are historical results from that specific test setup, not a current retest or a prediction for a different drive layout, network or workload. The reviewer praised performance and application support, while noting that in-browser live view worked only with Internet Explorer.
How much can it expand?
Synology documents compatibility with two SAS expansion models. The expansion units are separate products; the documented maximums apply to the specified configurations.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
| Expansion unit | Documented maximum with RS18017xs+ |
|---|---|
| RX1217sas | Up to seven units, for 96 total drives (Synology 2019 datasheet) |
| RX2417sas | Up to seven units, for 180 total drives (Synology 2019 datasheet) |
Synology’s datasheet also lists optional 16 GB and 32 GB DDR4-2133 ECC RDIMM modules (RAMRG2133DDR4-16G and RAMRG2133DDR4-32G), the RKS1317 sliding rail kit, and E10G17-F2 and E10G15-F1 10Gbps network adapters. Confirm the exact compatibility of any component against the relevant documentation and the condition of the specific item before buying.
What DSM and support status should buyers expect?
Synology’s product-status listing, accessed 4 October 2026, classifies the RS18017xs+ as Discontinued, with DSM Update Full and Technical Support Limited. The listing also shows a five-year warranty field, but that does not establish active warranty coverage for a used unit. Warranty language in the older datasheet was tied to purchase date.
The Tool Desk
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- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
The Download Center result available for this review showed DSM 7.4.1 in the DSM 7.4 series. Check Synology’s current release information and security advisories before deployment; also confirm support eligibility, drive compatibility and any warranty that applies to the particular unit. A product-status label is not a substitute for checking whether the system and its installed components meet your operational requirements.
Storage, data protection and virtualization
The hardware guide lists Btrfs and ext4 for internal volumes and Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10 storage modes. It specifies that external-media exFAT support requires a separate purchase of exFAT Access.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Synology’s 2019 datasheet describes Btrfs snapshots, Snapshot Replication and Hyper Backup, as well as virtualization support for VMware, Citrix, Microsoft Hyper-V and OpenStack. Those are capabilities documented in that datasheet revision; they do not establish that every associated package remains available or that the system holds current platform certification.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Who should consider the RS18017xs+?
The strongest fit is an organization that needs this particular combination of twelve SAS/SATA bays, dual 10GbE, ECC memory and a documented route to compatible SAS shelves—and can verify the condition and support path of the hardware it can obtain. A discontinued model with limited technical support calls for more diligence than a current platform purchase.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
- Lifecycle: Check the current firmware and security position and confirm what technical support, if any, is available for the unit.
- Compatibility: Verify required SAS/SATA drives and whether the needed RX1217sas or RX2417sas shelf is available and supported.
- Performance: Evaluate throughput using your own drive layout, RAID choice, network and workload; do not equate a vendor benchmark with a differently configured lab result.
- Total cost: Account for the enclosure, shelves, drives and the condition or support risks of older hardware. The cited material does not establish current market prices.
- Operations: Validate rack space, power, cooling and noise requirements for your site; the cited evidence does not provide an independent current operating-cost comparison.
What to verify before buying a used or residual-stock unit
- Ask for the exact model and serial details, and check support eligibility with Synology before relying on assistance or warranty coverage.
- Confirm the chassis, drive bays, network ports and PCIe slots are working, and establish what rails and accessories are included.
- Check drive compatibility and the state of the installed disks; confirm that the intended RAID or storage configuration suits the workload.
- Verify the exact expansion-shelf model and compatibility, and price the shelf and its drives as part of the complete system rather than assuming expansion hardware is included.
- Review the DSM release, package requirements and security advisories relevant to your deployment before placing the system into service.
Synology’s launch announcement of 19 January 2017 framed the RS18017xs+ as a premium storage option for business IT operations. That was the manufacturer’s launch positioning; the practical decision today depends on the documented hardware fit and the particular unit’s lifecycle, condition and support situation.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
