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Synology

Synology 8 Bay DiskStation DS1821+ (Diskless), 8-bay; 4gb ddr4

    • Based on 301 reviews
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Availability: In Stock.
Fulfilled by PCNation
Arrives May 10 – May 13
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Features

  • Accelerated Performance - 177% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor
  • Maximize Performance - Turbocharge HDD arrays by 20x or more without occupying drive bays using dual built-in M.2 slots for NVMe SSD cache
  • Expansion Made Easy - Scale-up on-demand to 18 drives with two DX517 expansion units
  • Includes Everything to Protect Your Data - Back up critical data to and from public clouds, Windows PCs and servers, virtual machines, and data on the NAS with Synology Active Backup suite, Hyper Backup, and Snapshot Replication
  • Ready for 10GbE - Add in a 10GbE SFP+ or RJ-45 NIC to instantly increase network bandwidth based on your existing infrastructure

Description

Synology DiskStation DS1821+ is a powerful 8-bay network-attached-storage solution designed to store and protect missioncritical data. Designed to tackle increasing amounts of unstructured data, the low-noise, desktop form- factor of the DS1821+ is built for both SOHO and SMB environments. With performance over 110K or 177% higher, 4K random read IOPS than its predecessor, the DS1821+ is fast, with ample room for scalability.

Brand: Synology


Size: 8-bay; 4GB DDR4


Compatible Devices: Desktop


Item Weight: 6000 Grams


RAM: ‎4 GB


Hard Drive: ‎Mechanical Hard Disk


Brand: ‎Synology


Series: ‎DS1821+


Item model number: ‎DS1821+


Hardware Platform: ‎PC


Item Weight: ‎13.23 pounds


Product Dimensions: ‎18.2 x 14.4 x 12.5 inches


Item Dimensions LxWxH: ‎18.2 x 14.4 x 12.5 inches


Hard Drive Interface: ‎Raid


Voltage: ‎100240 Volts


Manufacturer: ‎Synology


Date First Available: ‎December 3, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 10 – May 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • The 8-Bay is Amazing
Review Image by lmcrun19 lmcrun19
This is an amazing machine. Synology makes a great product. We currently own a 1618+ and a 216+. We wanted to upgrade to the 1821+ 8-bay for our small business, as we save a lot of files because we are in retail and take product photos and videos. Right now, we are really enjoying the faster processor and more storage. For the 1821+ we are going to setup the drives using SHR-2, our 1618 we used Raid 10, but Synology has come a long way with SHR, so we have high expectations. ... show more
Reviewed in the United States on December 24, 2023 by lmcrun19 lmcrun19
    • A GREAT upgrade!
This is my fourth 8-disk Synology DiskStation since 2014. My last one was a DS1817 which included two 10-gigabit Ethernet (RJ45) ports, and you can bet I aggregated those links on my (very expensive) Ubiquiti US-XG-6PoE and had 20-gigabit between this and my primary FreeNAS server. Well, I wanted to setup a secondary Plex server to offload some from my primary FreeNAS, but the DS1817 didn't have an x86 based chipset, so Plex wouldn't run. I bought the DS1821+ and have been (until today) living off 4-gigabit aggregated connections. However, where the DS1821+ really shines is its fairly capable AMD Ryzen quad-core CPU, which feels light years ahead of the DS1817 in terms of NAS performance and Plex transcoding on the fly. I broke out some of my BluRays and tried pretty much uncompressed dumps to the NAS and playback on Plex and it handled them and seeking really surprisingly well. Very happy with the 1821+. I do wish it came with at least a couple of SFP+ ports for connectivity, but this thing has PCI-E and you can toss in NVMe cache drives, more RAM, and an expansion card for 10-gigabit or more NVMe or both. I opted for an Intel X520-DA2 to get my 10 gigabit connectivity back, and the Synology found it right away with basically no configuration (other than bumping up MTU) necessary. Hooray! So if you're looking for a very capable, small form factor NAS with expansion options, the DS1821+ is so far my very favorite 8-bay I've used so far. Looking forward to what future models hold in store! ... show more
Reviewed in the United States on June 18, 2021 by David R. Chase
    • Powerful, fast, versatile, expandable, and easy to use
My collection of DVDs and Blu-Ray discs got big enough that I decided to rip them all to a media server. After the usual internet research I went with this model, the DS1821+. I was especially impressed by Synology's expansion capabilities -- I'd like to be able to keep adding more drives if I need them rather than buy a new NAS. I've been completely satisfied with the Synology array since the day I got it. The user interface is terrific and the system provides a wide variety of installable applications for many use cases. The DS1821+ supports both DLNA media hosting (through the "Media Server" application) and SMB sharing so it will work with many players (I use Infuse Pro). The unit is quiet enough to use as a media server in a home theater room (though this will probably depend on the drives you equip). Only nit: the NAS comes with 4GB of RAM but I'd recommend upgrading -- I bought compatible Arch memory here on Amazon. ... show more
Reviewed in the United States on May 31, 2021 by Maiken2051
    • Great, reliable, fast. Recommend ~$250 in upgrades to maximize performance.
Upgraded from a DS1517+. Super easy upgrade. Much faster. More disk space. Otherwise same build and quality. Stock ram is too little. Recommended unofficial upgrades for those on a budget (keep in mind Synology has official supported hardware if that's important to you): - 32gb RAM - might have compatibility warning depending on manufacturer, should be able to find for <$200 shipped total without compatibility warning. Google "DS1821+ and/or DS1621+ ECC Ram Upgrade Options" to see a list of RAM with/without warnings. - 10gbe NIC - Search around for Mellanox ConnectX-3 MCX311A-XCAT LOW PROFILE, it's plug and play, ~$45. A word of caution regarding nvme cache: it's not necessary for most users (including myself - I don't use it!). Average home users running virtual machines may benefit. If you really want it, only chose official Synology nvme cards or Optane for a cache. Consumer nvme cards WILL cause data loss when they inevitably and prematurely die (look it up). DSM7 will improve nvme cache, but I don't recommend using it until the stable release later this year. ... show more
Reviewed in the United States on February 17, 2021 by aeharding
    • Good NAS Drive. Easy to use for newbies
Pair the unit with anew intel 10gbps NIC and you will be happy. Also add 32 Gb of memory and a couple of the same size M2.ssd drives for cache and that is it!
Reviewed in the United States on February 5, 2024 by Jeremy
    • Very powerful little thing
I’m using this NAS to hold a backup of my cloud storage, and as a part of my Docker Swarm to have an x86-compatible machine (the rest are ARM64). So far it hasn’t disappointed me. Performance feels good, I’ve had no issues with storage or backups. The only thing I feel could be better is the flexibility of the underlying operating system. It’s Linux, so I expected to be able to do more complex things like managing it through Ansible and installing packages. Sadly, the only way to install third-party software in it is by using it’s package system, which is a pain for unofficial things like Wireguard support. ... show more
Reviewed in the United States on March 19, 2023 by Rodrigo
    • Great server
My old server failed and the new one is faster as well as compatible with the drive assay I had. Quick migration.
Reviewed in the United States on September 1, 2023 by mchipguru
    • New unit- worked out of the box
The price was good, and the item worked. I would have wished that there were options to get the station faster because I had downtime without the station. Overall recommendable seller.
Reviewed in the United States on February 12, 2024 by webuser66

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