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Availability:
Only 10 left in stock, order soon!
Arrives
Apr 7 – Apr 14
Features
- Supports drives on the model's official compatibility list
- Up to 2,239/1,573 MB/s sequential read/write throughput supports officewide applications
- Built-in 2.5GbE ports, supports 10GbE SFP+/RJ-45 and 25GbE SFP28 adapter cards
- Scale up on demand to with two DX525 expansion units for up to 18 drive bays and 360 TB of raw storage
- Backed by Synology's 3-year limited hardware warranty
Description
The DS1825+ is a versatile 8-bay storage solution designed to store and protect mission-critical data. Flexible support for faster networking speeds and capacity expansion makes the DS1825+ ideal for businesses needing a scalable and customizable storage solution for their growing data needs. Powered by Synology DiskStation Manager (DSM), this device is a flexible all- in-one solution for data sharing, synchronization, backup, and surveillance.
Brand: Synology
Color: Black
Product Dimensions: 9.57"D x 13.5"W x 6.54"H
Size: 166 mm x 343 mm x 243 mm
Material: Metal, Plastic
Brand: Synology
Series: DS1825+ 28144868
Item model number: DS1825+
Item Weight: 13.23 pounds
Product Dimensions: 9.57 x 13.5 x 6.54 inches
Item Dimensions LxWxH: 9.57 x 13.5 x 6.54 inches
Color: Black
Manufacturer: Synology
Date First Available: June 9, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Apr 7 – Apr 14
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Three-time Synology owner (DS1812, DS1819, DS1825) and almost wasn't given the now short-lived decision by Synology to only support first-party drives (Synology branded) on the DS25 series. So it is clear, as of DSM 7.3 Synology has silently walked back their short-lived first-party only experiment and now third-party drives are supported on the DS25 series. There are still some first-party requirements around NVMe (be sure to read up on it, search "synology drive compatibility policies"), but third-party 3.5" spinning disks work just fine. I have a fleet of Western Digital Red Pro 18TB drives working very well in the DS1825. Comparing Synology CPU, memory, networking, etc. against Synology's competition is missing the forest for the trees. It is rather well-known (and accepted) that Synology NAS's do not have the latest, greatest, best, fastest CPU's and memory "per dollar". We buy Synology for the best software and support, not for bleeding edge bountiful hardware. DSM (the OS) and the package management is second to none for prosumers looking for something that is feature rich and "just works" without fidgeting, tinkering, and hacking around (although you can certainly do that as well). My Synology runs as a SMB share, DNS Server, and DHCP Server. It also provides the backend NVR functions for several non-Synology cameras through Surveillance Station and serves to backup my personal OneDrive (natively through Synology Cloud Sync and Hyper Backup) and iCloud Drive (through some third-party tooling given the security enabled on my iCloud account and Synology Hyper Backup). Other functions I've used over the years include the Container (Docker) manager, Active Directory integration, and using it as an iSCSI target. From a software standpoint, each of these use cases have worked very well over the years and remain the principal reason I look to Synology for my NAS needs. They just work without much care and feeding (other than software updates). I evaluated and built out a TrueNAS host (with ECC memory, LSI HBA and everything) given first-party drive requirement from Synology (I was frustrated like everyone else). TrueNAS is fine, but I just don't want to tinker anymore. After reading about Synology DSM 7.3 supporting third-party drives, quickly picked up a DS1825 and some fresh WD Red Pro's over Black Friday 2025. If Synology decides to go down the road of "first-party drives only" again on the prosumer lines (like the DS), it'll be on a future series and equally as frustrating. Fingers crossed they've learned their lesson. For now, I've got 7 years of Synology DS1825 with third-party drives to enjoy until I am in the market again when the DS1832 is released. We'll see what it looks like then.
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Reviewed in the United States on December 10, 2025 by J. Urbanek
The product description is not clear - you must purchase Synology branded harddrives in order to use this at all. The product description said "reduced functionality" with drives not on the compatibility list. Reduced functionality must mean it only functions as a paperweight+space heater because you cannot install the operating system onto a drive that isn't Synology brand. I do not understand why normal hard drives (Western Digital, Seagate, HGST, etc) are blocked from this device. If Synology branded drives are required they I'd think they'd just be included and configurable. Just like buying a MacBook. I'm forced to return this as I'm not replacing my existing hard drives that I've spent thousands of dollars on.
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Reviewed in the United States on September 16, 2025 by Ben Ben
I’ve owned a synology DS nas for over a decade with no problems. Decided to get a new one because I didn’t want to have to start upgrading all the existing 8tb drives as I would have to buy 3 20tb drives just to start getting more storage. Some people stated that this only accepts Synology drives. I don’t doubt that they would do that because of greed. But I was able to use WD Red Pro drives. They are far from cheap but they were properly detected and setup. It does say that they are not on the compatibility list and they won’t guarantee compatibility but everything works up front. Obviously it updated the OS before I did anything so perhaps they loosened the restrictions on drive compatibility I know in my old DS I was able to use Green drives but mostly use the Red drives now days. I will not be able to talk about longevity on this model as I wouldn’t expect any issues for years. As my old unit just turned 13 years old and is still running just fine. The only problem it has is not compatible with future OS upgrades as my old unit is now to old.
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Reviewed in the United States on December 7, 2025 by Stephen
Hardware is topnotch. Easy to install hard drives without tools. Nicely done. Setup software couldn't find Synology's own webpage. REALLY??? That part of the setup was clugey. However, once DSM was installed, setup went smoothly. I installed 4 Synology 16TB hdd's and the unit runs very quiet. Can barely hear it running. In contrast, my other NAS with 4 Seagate 14TB hdd's, I can hear from the other room. I would definitely buy it again and would recommend this to others.
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Reviewed in the United States on January 19, 2026 by Russell H.
For me works as well as my DiskStation DS1821+, which is as of 2025 four years old. Did not have the Synology branded HDD's forced upon me as Synology was originally going to do. So far works well and is relatively easy to setup. Just hoping Synology doesn't cripple or remove some of the essential software that comes bundled with the DS1825+ the way they stopped supporting (essentially removed) software that was bundled with DS1821+, namely a very useful program called Video Station among a few others. The hardware specs aren't that good compared to others in this arena but the ease of use of the software that hasn't been removed in my use case is worth it.
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Reviewed in the United States on January 18, 2026 by JohnnyCaps
It’s my grandpa generation’ tech. And most synology’s parts are too expensive. If you get synology nas, you should buy synology brand hdd and ssd. Or get other brands to receive synology’ warning all the time. The mobile app is convenient to upload documents, but it runs like ten years ago app’ tech. I like synology, but those brands’ ssd , hdd are crazy.
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Reviewed in the United States on January 1, 2026 by Peter