Technical reference
Synology DS223 specifications
Diskless enclosure with fixed 2 GB RAM; SATA drives purchased separately.
Complete specifications with requirements, upgrade limits and sources. For our buying judgment, reviews and prices, return to the buying guide.
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Search all 93 specifications, including conditions and limits.
Processor and memory
Read the supplied memory separately from the supported maximum.
| CPU Model | Realtek RTD1619B[1] |
|---|---|
| CPU Quantity | 1[1] |
| CPU Cores | 4[1] |
| CPU Threads | 4[1] |
| CPU Architecture | 64-bit[1] |
| CPU Frequency | 1.7 GHz[1] |
| Hardware Encryption Engine | Supported[1] |
| System Memory | 2 GB DDR4 non-ECC[1] Fixed onboard memory; no user memory expansion. |
Drives, capacity and compatibility
Capacity and drive choices depend on RAID, memory and model-specific compatibility.
| Drive Bays | 2 × 3.5" SATA HDD or 2.5" SATA SSD[1] |
|---|---|
| Hot Swappable Drive | Supported[1] |
| Maximum Single Volume Size | 108 TB[1] Software ceiling, not installed or achievable raw capacity. Drive count, RAID, filesystem and metadata determine usable space. |
| Maximum Internal Volume Number | 64[1] |
| SSD TRIM | Supported[1] |
| Supported RAID Type | Synology Hybrid RAID Basic JBOD RAID 0 RAID 1[1] |
| RAID Migration | Basic to RAID 1[1] |
| Volume Expansion with Larger HDDs | Synology Hybrid RAID RAID 1[1] |
| Internal Drives | Btrfs ext4[1] |
| External Drives | Btrfs ext4 ext3 FAT32 NTFS HFS+ exFAT[1] |
| Upgrade limits | No M.2 slots, network upgrade slot or external bay expansion[1] Choose the built-in bay count, memory and network for the life of the enclosure. |
Network and connections
A faster port needs a suitable computer and network to improve a transfer.
| RJ-45 1GbE LAN Port | 1[1] MTU limit 1500. Port count is not a single-file transfer speed. |
|---|---|
| USB 3.2 Gen 1 Port | 3[1] |
| USB Copy | Supported[1] |
| File Protocol | SMB AFP NFS FTP WebDAV Rsync[1] |
| Maximum Number of SMB Connections (FSCT-Based) | 5[1] FSCT 1.3 HomeFolder test for 600s, all bays populated with Synology SATA HDDs and all onboard network ports; Windows Server 2022 controller, eight Windows 10 clients, directory leasing enabled. Not the number of accounts or an absolute connection block. |
| Windows Access Control List (ACL) Integration | Supported[1] |
| NFS Kerberos Authentication | Supported[1] |
Backups, photos and other apps
Application guidelines retain their test, memory and licensing conditions.
| Maximum Local User Accounts | 256[1] |
|---|---|
| Maximum Local Groups | 64[1] |
| Maximum Shared Folder | 64[1] |
| Maximum Shared Folder Sync Tasks | 2[1] |
| Folder and Package Backup | Supported[1] |
| Syslog Events per Second | 400[1] |
| Supported Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV[1] |
| Supported Browsers | Chrome Firefox Edge Safari[1] |
| Maximum Concurrent Download Tasks | 80[1] |
| Maximum iSCSI Target Number | 2[1] |
| Maximum LUN | 4[1] |
| LUN Clone/Snapshot, Windows ODX | Supported[1] |
| DLNA Compliance | Supported[1] |
| Facial Recognition | Supported[1] |
| Maximum Snapshots per Shared Folder | 128[1] |
| Maximum Snapshots per LUN | 32[1] |
| Maximum Snapshots per System | 1,024[1] |
| Maximum Replication Tasks for Shared Folders | 16[1] |
| Maximum Replication Tasks for LUNs | 8[1] |
| Maximum Replication Tasks per System | 16[1] |
| Default Licenses | 2 (Additional cameras require purchase of licenses)[1] |
| Maximum IP Cameras and Total FPS (H.264) | 1080p: 20 channels, 460 FPS 3M: 20 channels, 300 FPS 5M: 15 channels, 150 FPS 4K: 11 channels, 110 FPS[1] Vendor continuous recording test with factory RAM and full drive population. RTSP streaming; all-camera SRTP reduces stated performance to 70%. Simultaneous viewing channels are twice the stated camera count for the same codec/resolution. Additional workloads affect results. |
| Maximum IP Cameras and Total FPS (H.265) | 1080p: 20 channels, 500 FPS 3M: 20 channels, 400 FPS 5M: 20 channels, 350 FPS 4K: 20 channels, 200 FPS[1] Vendor continuous recording test with factory RAM and full drive population. RTSP streaming; all-camera SRTP reduces stated performance to 70%. Simultaneous viewing channels are twice the stated camera count for the same codec/resolution. Additional workloads affect results. |
| Maximum Number of Users | 5[1] Guideline for Drive-indexed/hosted files: 20% users active, 80% idle; single SSD volume, Btrfs and unencrypted shares. Exceeding the guideline can slow responses but does not block operation. |
| Maximum Number of Hosted Files | 100,000[1] Guideline for Drive-indexed/hosted files: 20% users active, 80% idle; single SSD volume, Btrfs and unencrypted shares. Exceeding the guideline can slow responses but does not block operation. |
| Maximum Number of Users | 5[1] Guideline: 20% users act every 30s, 80% view a file; single SSD volume and Intel i3-3220/8 GB client. Client performance also affects editing capacity. |
| Maximum Connections | 2[1] |
Size, noise and power
Laboratory ratings depend on installed drives and workload.
| Size (Height × Width × Depth) | 165 mm × 108 mm × 232.7 mm[1] |
|---|---|
| Weight | 1.28 kg[1] |
| System Fan | 92 mm × 92 mm × 1 pcs[1] |
| Fan Speed Mode | Full-Speed Mode Cool Mode Quiet Mode[1] |
| Brightness Adjustable Front LED Indicators | Supported[1] |
| Power Recovery | Supported[1] |
| Noise Level | 14.6 dB(A)[1] Manufacturer idle test, fully populated with Synology SATA SSDs. Two GRAS 40AE microphones at 1m front/rear; background 16.49–17.51dB(A), temperature 24.25–25.75°C, RH 58.2–61.8%. Your drives and room change audible noise. |
| Scheduled Power On / Off | Supported[1] |
| Wake on LAN / WAN | Supported[1] |
| Power Supply Unit / Adapter | 60 watts[1] Adapter rating, not everyday energy use. |
| AC Input Power Voltage | 100V to 240V AC[1] |
| Power Frequency | 50/60 Hz, Single Phase[1] |
| Power Consumption | 17.343 watts (Access) 4.08 watts (HDD Hibernation)[1] Manufacturer access/drive-hibernation measurements; hibernation is not normal idle. Drive choice and workload affect consumption. |
| British Thermal Unit | 59.19 BTU/hr (Access) 13.92 BTU/hr (HDD Hibernation)[1] Manufacturer access/drive-hibernation measurements; hibernation is not normal idle. Drive choice and workload affect consumption. |
Warranty, box contents and environment
Check included parts and optional coverage before purchase.
| Operating Temperature | 0°C to 40°C (32°F to 104°F)[1] |
|---|---|
| Storage Temperature | -20°C to 60°C (-5°F to 140°F)[1] Manufacturer Fahrenheit lower bound is inconsistent; −20°C equals −4°F. |
| Operating Humidity | 8% to 80% RH[1] |
| Storage Humidity | 5% to 95% RH[1] |
| Hardware warranty | 2 years; optional extension to 4 years[1] Paid Extended Warranty Plus in eligible Europe/North America locations; receipt date starts coverage. |
| Certifications | FCC, CE, BSMI, VCCI, RCM, UKCA, EAC, CCC, KC, BIS[1] |
| In the box | NAS, accessory pack, AC adapter, AC cord, 1 LAN cable, quick installation guide[1] Storage drives are separate purchases. |
Official hardware — Memory
Complete current manufacturer values and test conditions.
| Memory — conditions and limits | Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and performance.[10] Current manufacturer Specifications table 1, row 12; Memory. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official hardware — Storage
Complete current manufacturer values and test conditions.
| Hot Swappable Drive* | Supported[10] Current manufacturer Specifications table 1, row 15; Storage. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official hardware — External Ports
Complete current manufacturer values and test conditions.
| External Ports — conditions and limits | MTU value of 1GbE LAN port has a limit of 1500.[10] Current manufacturer Specifications table 1, row 20; External Ports. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official hardware — Others
Complete current manufacturer values and test conditions.
| Others — conditions and limits | For more information on how power consumption is measured, refer to this article . Noise testing was conducted with the Synology system fully installed with Synology SATA SSDs and in an idle state. Two GRAS 40AE microphones were placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%.[10] Current manufacturer Specifications table 1, row 37; Others. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official hardware — Certification
Complete current manufacturer values and test conditions.
| Certification | FCC CE BSMI VCCI RCM UKCA EAC CCC KC BIS[10] Current manufacturer Specifications table 1, row 44; Certification. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official hardware — Warranty
Complete current manufacturer values and test conditions.
| Warranty | 2-year hardware warranty, extendable to 4 years with Extended Warranty Plus[10] Current manufacturer Specifications table 1, row 46; Warranty. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|---|
| Warranty — conditions and limits | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. ( Learn more )[10] Current manufacturer Specifications table 1, row 47; Warranty. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
Official hardware — Environment
Complete current manufacturer values and test conditions.
| Environment | RoHS Compliant[10] Current manufacturer Specifications table 1, row 49; Environment. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official hardware — Packaging Content
Complete current manufacturer values and test conditions.
| Packaging Content | Main Unit × 1 Accessory Pack × 1 AC Power Adapter × 1 AC Power Cord × 1 RJ-45 LAN Cable × 1 Quick Installation Guide × 1[10] Current manufacturer Specifications table 1, row 51; Packaging Content. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official hardware — Optional Accessories
Complete current manufacturer values and test conditions.
| Optional Accessories | Enterprise Series 3.5" SATA HDD: HAT5300 Series Plus Series 3.5" SATA HDD: HAT3300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series[10] Current manufacturer Specifications table 1, row 53; Optional Accessories. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official DSM — Storage Management
Complete current manufacturer values and test conditions.
| Storage Management — conditions and limits | Actual maximum storage pool and volume sizes vary depending on drives used, the number of drive bays available, and the RAID configuration. Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.[10] Current manufacturer Specifications table 2, row 9; Storage Management. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official DSM — File Services
Complete current manufacturer values and test conditions.
| File Services — conditions and limits | Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration: Test workload: HomeFolder scenario provided by the FSCT tool Test duration: 600 seconds Domain controller & FSCT controller: Windows Server 2022 FSCT clients: 8 × Windows 10 machines SMB feature: Directory leasing enabled[10] Current manufacturer Specifications table 2, row 18; File Services. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official DSM — General Specifications
Complete current manufacturer values and test conditions.
| Supported Language | English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文[10] Current manufacturer Specifications table 2, row 31; General Specifications. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|---|
| General Specifications — conditions and limits | For an updated list of supported browser versions, check the DSM Technical Specifications .[10] Current manufacturer Specifications table 2, row 32; General Specifications. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
Official DSM — Synology Chat
Complete current manufacturer values and test conditions.
| Synology Chat | Supported[10] Current manufacturer Specifications table 2, row 35; Synology Chat. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official DSM — Surveillance Station
Complete current manufacturer values and test conditions.
| Surveillance Station — conditions and limits | Performance figures are obtained from testing conducted with the device fully populated with drives, with their default memory configuration, and under a continuous recording setup. Actual system capabilities may vary based on configuration, drive performance, enabled features, and the presence of additional workloads. Use NVR Selector to quickly find a suitable model based on your requirements. The number of video channels that can be viewed simultaneously is double the maximum number of cameras for the same codec and resolution. The values above are based on testing with RTSP streaming. If SRTP is enabled for all cameras, overall performance will decrease to 70% of the stated figures.[10] Current manufacturer Specifications table 2, row 57; Surveillance Station. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Official DSM — Synology Drive
Complete current manufacturer values and test conditions.
| Maximum Number of Hosted Files | 100,000 (applies to files indexed or hosted by Synology Drive . For file access through other standard protocols, refer to the File Services section above)[10] Current manufacturer Specifications table 2, row 60; Synology Drive. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|---|
| Synology Drive — conditions and limits | The suggested maximum number of users is based on the following workload: 20% of users randomly perform file operations (upload, download, move, and delete), and 80% of users are logged in but idle. Learn more Models with SSD support are tested with a single SSD volume. Exceeding the recommended numbers above will not block application operations, but may result in longer response time. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.[10] Current manufacturer Specifications table 2, row 61; Synology Drive. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
Official DSM — Synology Office
Complete current manufacturer values and test conditions.
| Synology Office — conditions and limits | The suggested maximum number of users is based on the following workload: 20% of users are executing random actions at an average of 30-second intervals, and 80% of users are logged in and viewing a file. Learn more Models with SSD support are tested with a single SSD volume. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8 GB RAM[10] Current manufacturer Specifications table 2, row 64; Synology Office. Numbers are manufacturer ratings/guidelines, not ChooseCompute test results. |
|---|
Exact product identity & open questions
- Live Digital Citizen: Live 403; Wayback used.
- Video: Full videos and transcripts were not reviewed. Embedded article screenshots were checked where recorded; this is not a complete video review.
- Retail price dates: Newegg buyboxes were rechecked on 2026-09-11; B&H returned 403. Other retailer observations retain their original dates. Prices and seller selection can change.
Sources
Research updated Sep 11, 2026. Individual source check dates are listed below. Measurements belong to the named reviewers; tested configurations and software versions may differ from the product you buy.
- [1] Synology DS223 product specifications ↗
Checked Sep 11, 2026 · Hardware + DSM tables, last updated Aug 6, 2026
- [2] ComputerBase DS223 test page 2 ↗
Checked Sep 11, 2026 · Encrypted 15 GB 70.94/64.72 MB/s; IronWolf Pro 20 TB RAID 1
- [3] TechRadar DS223 hands on ↗
Checked Sep 11, 2026 · ATTO 2 MB 111/113 MB/s
- [4] PCWelt DS223 test ↗
Checked Sep 11, 2026 · Small-file backup ~19 MB/s
- [5] Digital Citizen DS223 review ↗
Checked Sep 11, 2026 · Wayback; LAN Speed Test 816.5/750.25 Mbps
- [6] B&H Photo Video DS223 enclosure listing ↗
Checked Sep 8, 2026 · New buy box; exact model and diskless factory configuration
- [7] Newegg DS223 enclosure listing ↗
Checked Sep 8, 2026 · New buy box; exact model and diskless factory configuration
- [8] Best Buy DS223 enclosure listing ↗
Checked Sep 8, 2026 · New buy box; exact model and diskless factory configuration
- [9] Adorama DS223 enclosure listing ↗
Checked Sep 8, 2026 · New buy box; exact model and diskless factory configuration
- [10] Synology DS223 product page ↗
Checked Sep 11, 2026 · Same current US product page
- [11] Amazon — DS223 ↗
Checked Sep 10, 2026 · Selected buy-box seller; Product information model; New offers. MAP-hidden main price is not inferred from other sellers or recommendations.
- [12] Newegg — DS223 ↗
Checked Sep 11, 2026 · Exact-model title, specification table, buybox price/seller and Add to cart; parent captured source
- [13] Synology DS223 Product Spec PDF ↗
Checked Sep 11, 2026 · Product Specifications PDF last updated Aug 6, 2026
Research and review record
- Research: Grok 4.6 · Source research and data update
- Self-check: Grok 4.6 · Researcher self-check
- Independent review: GPT-6 (Codex) · Independent available original prose, official hardware/software tables and recorded chart review. Source-specific contradictions resolved or excluded. Current Newegg buyboxes checked; inaccessible merchants retain historical dates. Full videos not reviewed.
- Editorial integration: GPT-6 (Codex) · Editorial integration and validation
Independent review completed for the scope recorded in the audit.
Source evidence and review history (JSON)