Synology DS923+ Review: Is It Right for a Home Office or Small Business?

ECC memory, nine-bay expansion, and a real 10GbE option — on a 2022 platform now sitting next to its own successor.

By John Hall — TechODash | Last updated: July 2026

Quick Verdict

Important caveat up front: the DS923+ is a late-2022 model, and Synology has replaced it with the DS925+ in the current lineup. Stock is inconsistent across the US, UK, and EU, and several retailers now ask more for the DS923+ than the newer DS925+ costs. That changes the buying advice significantly — covered in full below.

In a typical home office or small-business network, the DS923+ sits between your everyday devices and your offsite backups. It plugs into your router or switch, holds four drives configured for redundancy, and becomes the single place where files live. Its practical value isn't raw speed — it's consolidation: one shared, redundant, permission-controlled location instead of a scatter of external drives and personal cloud folders. The DS923+ specifically targets the "start small, grow later" case — four bays now, up to nine with a DX517 expansion unit, plus a slot for an optional 10GbE card and two M.2 NVMe slots. That expansion runway is the main reason it stayed relevant longer than most four-bay units.

Why This Product Matters

In a typical home office or small-business network, the DS923+ sits between your everyday devices and your offsite backups. It plugs into your router or switch, holds four drives configured for redundancy, and becomes the single place where files live — company documents, client work, photo libraries, accounting exports, and machine backups. Its practical value is not raw speed. It is consolidation. Instead of a scatter of external USB drives, personal cloud folders, and laptops that each hold the only copy of something important, you get one shared, redundant, permission-controlled location. Synology's DiskStation Manager (DSM) then layers on the parts most small operations never get around to building themselves: scheduled PC and Mac backups, file sync across devices, snapshots that can roll back a folder to yesterday, and a straightforward path to copying everything offsite.

Key Features That Matter

Four bays, expandable to nine: the DX517 expansion unit connects over eSATA and adds five more bays without migrating your data to a new device — the feature that justifies the price premium over cheaper four-bay boxes. ECC memory: ships with 4GB of DDR4 ECC, up to 32GB across two SODIMM slots — error-correcting memory quietly catches RAM errors before they become silently corrupted files, rare at this price and genuinely valuable for decade-long archives. Btrfs with snapshots: enables Snapshot Replication, taking point-in-time copies of shared folders so an overwritten or deleted file can be restored in minutes, with snapshots made immutable so ransomware can't alter them. Active Backup for Business: free with DSM, backing up Windows PCs, Macs, physical servers, VMware, and Microsoft 365 or Google Workspace accounts — sold separately by other vendors, this alone is worth a few hundred dollars to a small business. Synology Drive: a self-hosted file sync and share service with desktop and mobile clients, practical for teams that want Dropbox-style behavior without per-seat monthly fees. Two M.2 NVMe slots: usable for read/write cache, or as a separate all-flash storage pool for databases, VMs, or active project files. Optional 10GbE: a single PCIe Gen 3 x2 slot accepts Synology's E10G22-T1-Mini card. Notably, the newer DS925+ dropped this option in favor of built-in 2.5GbE — so for anyone who genuinely wants 10GbE, the older DS923+ is actually the more capable choice. Surveillance Station: supports up to 40 IP cameras, with two camera licenses included; additional licenses are a one-time purchase, not a subscription.

Performance and Reliability

Synology advertises up to 625 MB/s sequential read and 559 MB/s write — real numbers, but measured over the optional 10GbE card with link aggregation and tuned conditions. On the two 1GbE ports the unit actually ships with, you'll see roughly 110 MB/s per connection — around 113 MB/s in independent testing. That's the honest ceiling for most buyers, and the number to plan around. What does 110 MB/s feel like? Copying a 50GB project folder takes about eight minutes. Streaming 4K video, opening documents, running Time Machine backups overnight, and syncing files across a small team all work comfortably. Working directly off the NAS in a video timeline does not. The dual-core Ryzen R1600 handles multi-user file serving, Docker containers, a couple of light VMs, and Surveillance Station without complaint. Where it runs out of headroom is anything requiring on-the-fly video transcoding, since there's no integrated GPU — Plex will direct-play fine to devices that support the codec and will struggle when transcoding is required. The 4GB of base RAM is workable but tight in 2026 — if you plan to run Synology Drive, Docker, and a VM together, budget for a memory upgrade. On reliability, Synology's track record with DSM is the strongest argument for the platform — units running for five and six years with only drive replacements are common, updates rarely break things, and the hardware is quiet enough for a shared room. Power draw is modest, generally 30–45W under normal use.

Security Review

DSM includes a real firewall, Auto Block for repeated failed logins, and Account Protection that locks out accounts under brute-force attempts. Two-factor authentication is available and can be enforced across all accounts. Volumes support full encryption at rest, and shared folders support WORM (write-once, read-many) for records you must not allow anyone to alter. Snapshots can be protected against deletion, which is the single most effective defense against ransomware encrypting your shared drive from an infected PC. Synology also publishes a formal ransomware guidance document and maintains an active security advisory process, with a dedicated product security incident response team. Where the limits are: nearly every real-world Synology compromise has followed the same pattern — an admin account with a weak password, DSM exposed directly to the internet on default ports, and updates left uninstalled. The device doesn't protect you from those choices by default. Two more honest limitations: snapshots are not backups — they live on the same device, so if the unit is stolen, flooded, or fails catastrophically, snapshots go with it. And RAID is not a backup either — it protects against a drive failing, nothing about accidental deletion, ransomware, or fire. On the drive compatibility controversy: in early 2025 Synology restricted new Plus models to a validated drive list, which caused real concern. That restriction was walked back in DSM 7.3 in October 2025 for hard drives and SATA SSDs, and the DS923+ was never subject to it in the first place — it accepts standard third-party NAS drives. Subscription requirements: none for core functionality. DSM, Active Backup for Business, Synology Drive, Snapshot Replication, and Hyper Backup are all included at no extra cost; Synology C2 cloud backup and C2 Identity are optional paid subscriptions.

First Settings I Would Change

1. Create a new administrator account and disable the default admin account — this removes the single most commonly attacked username.
2. Turn on two-factor authentication and enforce it for all accounts — use an authenticator app rather than SMS.
3. Enable the firewall and allow only what you actually need — start by permitting your local subnet only, then add specific rules as you add services.
4. Turn on Auto Block and Account Protection — lock out an IP after five failed attempts within five minutes, and whitelist your own static IPs first.
5. Set up Snapshot Replication on every shared folder that holds real work — hourly snapshots retained for a week, daily for a month, is a sensible starting point.
6. Configure an offsite backup with Hyper Backup — to Synology C2, Backblaze B2, another NAS, or a rotating USB drive kept somewhere else. Do this in week one.
7. Enable automatic DSM security updates and email or push notifications — you want to hear about a failing drive on the day it starts failing.
8. If you need remote access, use QuickConnect or a VPN rather than port forwarding — avoid exposing DSM's admin interface directly to the internet.

Setup Difficulty

Rating: Beginner to Intermediate — getting to a working shared folder is genuinely beginner-friendly: install drives with no tools, plug in power and Ethernet, visit find.synology.com, and follow a guided installer. Most people are sharing files within thirty minutes. The intermediate part comes after — choosing a RAID level, planning a real backup strategy, setting sane user permissions, and hardening remote access all require thought and about an afternoon of reading. This is not a device you configure once and never revisit. Budget a weekend to do it properly, and expect a maintenance touch every few months.

Best Alternatives

Alternative	Why Consider It
Synology DS925+	Most people who want Synology today — dual 2.5GbE, quad-core V1500B, same DSM software, current-generation support; no 10GbE path, still no transcoding (~$599–$640)
UGREEN NASync DXP4800 Plus	Plex users and hardware-value buyers — Intel Pentium Gold 8505 with Quick Sync transcoding, 8GB DDR5, built-in 10GbE + 2.5GbE, younger software (~$560–$700)
Synology DS423+	Budget-conscious home offices and families — cheapest route into DSM, Intel CPU with transcoding, but 2GB base RAM, no ECC, no expansion (~$400–$500)
QNAP TS-464	Technical users wanting maximum flexibility — 2.5GbE, HDMI out, hardware transcoding, PCIe slot, but more complex software (~$500–$600)
TerraMaster F4-424 Pro	Users comfortable troubleshooting on their own — Intel Core i3, dual 2.5GbE, 8GB DDR5, strong specs per dollar, least mature software (~$500–$600)

Final Verdict: Consider Carefully

The DS923+ is a good machine that's been overtaken by its own calendar. Everything that made it a strong recommendation in 2023 is still true — the ECC memory, the nine-bay expansion path, the 10GbE option, and above all DSM, which remains the most polished small-business storage software available. If you already own one, keep it patched, keep snapshots on, keep an offsite copy, and it'll serve you well for years. Buying one new in mid-2026 is a different question — Synology has moved on to the DS925+, retail stock is inconsistent, and remaining sellers frequently price the older model above the newer one. There are two situations where the DS923+ is still the right call: finding one genuinely discounted below the DS925+ (at $450 or less, the value returns immediately), or specifically needing 10GbE, since the DS923+ supports the upgrade card and the DS925+ does not. For everyone else: if you want the Synology ecosystem, buy the DS925+ instead.

Realistic Standard: A growing-business NAS should give you real expansion headroom and ECC memory for long-term data integrity — the DS923+ genuinely delivers both. Just check current pricing against the DS925+ before buying new; if they're close, the successor is the smarter purchase unless you specifically need the DS923+'s 10GbE upgrade path.

FAQ

Can I use any hard drives in the DS923+, or do I need Synology-branded drives?
You can use standard third-party NAS drives. The DS923+ was never covered by the validated-drive restriction Synology briefly applied to its 2025 Plus models. Use CMR drives rated for NAS use — Seagate IronWolf, WD Red Plus or Pro, or Toshiba N300 are sensible choices. Avoid SMR drives entirely, as they perform poorly during RAID rebuilds.

Will the DS923+ run Plex well?
For direct play, yes. For transcoding, no. The Ryzen R1600 has no integrated GPU, so there's no hardware transcoding, and CPU-only transcoding will fail on higher-bitrate content. If you need to stream to remote devices that require transcoding, choose an Intel-based NAS instead.

Do I need to pay a subscription to use it?
No. DSM and all core applications — Active Backup for Business, Synology Drive, Snapshot Replication, Hyper Backup, Photos — are included at no extra cost, with free updates. Optional paid services include Synology C2 cloud backup and additional Surveillance Station camera licenses.

How long will it keep receiving updates?
As a 2022-generation Plus model, the DS923+ is supported on the current DSM 7.4 release. Synology typically provides security updates for well beyond the hardware warranty, though older models eventually stop receiving major feature upgrades.

Is a NAS actually safer than cloud storage for my business files?
It's different, not automatically safer. A NAS gives you control, no monthly fees, and no third-party access to your data — but makes you responsible for updates, backups, and access control. The most reliable approach is a 3-2-1 strategy: three copies of your data, on two different media types, with one offsite.

Where to Go From Here

• Browse more SOHO Reviews
• Home Network Security
• Remote Work Security
• SOHO Architecture

Sources: Synology — official DS923+ product page, Synology Knowledge Center — drive compatibility and ransomware guidance, Android Central — DS923+ review

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About the Author: John Hall has 25+ years of IT experience in networking and small-office technology.