SA3400
Highly scalable NAS meeting extensive data storage needs
Highly scalable storage with uncompromising performance
Equipped with an 8-core CPU and 16GB ECC RDIMM memory, SA3400 delivers sequential throughput at over 5,520 MB/s and 304,277 random IOPS1. Built-in 10GbE Ethernet, PCIe expansions, and the support for both SAS and SATA drives provide resilient configurability with fast data transmission, fulfilling modern enterprises' needs for excellent performance and massive storage scalability simultaneously.
CPU
Intel® Xeon® D-1541 8-core 2.1 GHz
Memory
16GB DDR4 ECC RDIMM, up to 128GB
Scalability
Up to 180/96 SAS/SATA drives2
Expandability
2 x PCIe 3.0 for additional add-in cards’ expansion
Small-to-hyperscale flexibility
Scalable up to 180/96 drives delivering more than 1.5 petabytes raw capacity, SA3400 can easily fulfill extensive storage needs, including video post-production and massive surveillance deployment.
Supercharge network performance effortlessly
Built-in dual 10GbE Ethernet ports and dual PCIe 3.0 slots provide high-speed network transmission with additional network interface cards' expansion.

Btrfs: Next generation storage efficiency
Btrfs file system introduces the most advanced storage technologies to meet the management needs of modern, large-scale businesses:

Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders

Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots

File or folder level data restoration makes data recovery fast and flexible

Automatic file self-healing detects and recovers corrupted files without user intervention
Ultimate Backup Solution
SA3400 integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.

Active Backup for Business
Centralize backup tasks for VMware, Windows, and file servers. Restore whatever you want fast and reliably when needed.
Learn more

Hyper Backup
Comprehensively back up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or a public cloud to ensure data safety.
Learn more

Synology Drive
Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery.
Learn more

Active Backup for
Office 365 / G Suite
On-premise backup solution with a centralized dashboard. Optimize storage efficiency with single instancing and block-level deduplication technology.
Office 365 G Suite
Fully certified storage virtualization solutions
Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.

5-year warranty
As we're committed to improving product innovation and quality, Synology guarantees a robust and reliable data management experience with a 5-year limited warranty, providing responsive technical support and hardware replacement services to maximize your return on investment.

Synology Replacement Service (SRS)
SRS provides free advance replacement units as early as the next business day in selected regions, maximizing the service uptime for your mission-critical storage and ensuring your business continuity.Check service availability here.
Powered by Synology DSM
Synology MailPlus
Secure, reliable, and private mail server solution with an intuitive and modern mail client.
Learn moreSurveillance Station
Complete surveillance solution for recording, monitoring, and management.
Learn moreActive Backup Suite
Integrated, modern, and license-free backup & instant recovery solution for VMware, Windows, Office 365, and G Suite.
Learn moreSynology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
Learn moreHyper Backup
Store multiple backup versions with block-level incremental data backup and cross-version deduplication.
Learn moreNotes:
- Performance figures may vary depending on environment, usage, and configuration.
- SA3400 can scale up to 96 drives with 7 x RX1217sas or 180 drives with 7 x RX2417sas, sold separately.
Hardware Specifications |
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CPU |
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CPU |
CPU Model | Intel Xeon D-1541 |
CPU Architecture | 64-bit | |
CPU Frequency | 8-Core 2.1 (base) / 2.7 (turbo) GHz | |
Hardware Encryption Engine (AES-NI) | ||
Memory |
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Memory |
System Memory | 16 GB DDR4 ECC RDIMM |
Memory Module Pre-installed | 16 GB (16 GB x 1) | |
Total Memory Slots | 4 | |
Memory Expandable up to | 128 GB (32 GB x 4) | |
Notes |
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Storage |
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Storage |
Drive Bays | 12 |
Maximum Drive Bays with Expansion Unit | 96 (RX1217sas) / 180 (RX2417sas) | |
Compatible Drive Type* (See all supported drives) |
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Maximum Internal Raw Capacity | 192 TB (16 TB drive x 12) (Capacity may vary by RAID types) | |
Maximum Raw Capacity with Expansion Units | 1,536 TB (192 TB + 16 TB drive x 84) (Capacity may vary by RAID types) | |
Maximum Single Volume Size* |
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Hot Swappable Drive | ||
Notes |
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External Ports |
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External Ports |
RJ-45 1GbE LAN Port | 4 (with Link Aggregation / Failover support) |
RJ-45 10GbE LAN Port | 2 (with Link Aggregation / Failover support) | |
USB 3.0 Port | 2 | |
Expansion Port | 1 | |
PCIe |
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PCIe |
PCIe Expansion | 2 x Gen3 x8 slots (x8 link) |
Add-In-Card Support | PCIe Network Interface Card (Learn more) | |
File System |
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File System |
Internal Drives |
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External Drives |
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Notes | exFAT Access is purchased separately in Package Center. | |
Appearance |
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Appearance |
Form Factor (RU) | 2U |
Size (Height x Width x Depth) | 88 mm x 482 mm x 724 mm | |
Weight | 14.5 kg | |
Rack Installation Support* | 4-post 19" rack (Synology Rail Kit - RKS1317) | |
Notes | The rail kit is sold separately | |
Others |
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Others |
System Fan | 80 mm x 80 mm x 4 pcs |
Fan Speed Mode |
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Easy Replacement System Fan | ||
Power Recovery | ||
Noise Level* | 49.8 dB(A) | |
Scheduled Power On / Off | ||
Wake on LAN / WAN | ||
Power Supply Unit / Adapter | 500 W | |
Redundant Power Supply | ||
AC Input Power Voltage | 100 V to 240 V AC | |
Power Frequency | 50/60 Hz, Single Phase | |
Power Consumption* |
137.17 W (Access) 70.95 W (HDD Hibernation) |
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British Thermal Unit |
468.04 BTU/hr (Access) 242.09 BTU/hr (HDD Hibernation) |
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Notes |
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Temperature |
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Temperature |
Operating Temperature | 0°C to 35°C (32°F to 95°F) |
Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
Relative Humidity | 5% to 95% RH | |
Certification |
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Certification |
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Warranty |
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Warranty |
5 Years | |
Notes | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) | |
Environment |
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Environment |
RoHS Compliant | |
Packaging Content |
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Packaging Content |
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Optional Accessories |
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Optional Accessories |
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Notes | It is required to use D4RD-2666-16G with identical memory modules of the same capacity and frequency. For more information, visit here. |
DSM Specifications |
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Storage Management |
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Storage Management |
Maximum Internal Volume Number | 256 |
Maximum iSCSI Target Number | 256 | |
Maximum iSCSI LUN | 512 | |
iSCSI LUN Clone/Snapshot, Windows ODX | ||
SSD Read Cache | ||
SSD Read / Write Cache (White Paper) | ||
SSD TRIM | ||
RAID Group | ||
Supported RAID Type |
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RAID Migration |
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Volume Expansion with Larger HDDs |
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Volume Expansion by Adding a HDD |
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Global Hot Spare Supported RAID Type |
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File Services |
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File Services |
File Protocol | CIFS/AFP/NFS/FTP/WebDAV |
Maximum Concurrent CIFS/AFP/FTP Connections | 4,000 | |
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) | 10,000 | |
Windows Access Control List (ACL) Integration | ||
NFS Kerberos Authentication | ||
Account & Shared Folder |
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Account & Shared Folder |
Maximum Local User Accounts | 16,000 |
Maximum Local Groups | 512 | |
Maximum Shared Folder | 512 | |
Maximum Shared Folder Sync Tasks | 32 | |
High Availability |
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High Availability |
Synology High Availability | |
Log Center |
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Log Center |
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Syslog Events per Second | 3,000 | |
Virtualization |
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Virtualization |
VMware vSphere 6 with VAAI | |
Windows Server 2016 | ||
Citrix Ready | ||
OpenStack | ||
General Specifications |
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General Specifications |
Networking Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV |
Supported Browsers |
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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 | |
Add-on Packages view the complete package list |
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Antivirus by McAfee (Trial) |
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Antivirus by McAfee (Trial) |
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Central Management System |
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Central Management System |
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Synology Chat |
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Synology Chat |
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Maximum Users | 6,000 | |
Notes |
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Document Viewer |
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Document Viewer |
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Download Station |
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Download Station |
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Maximum Concurrent Download Tasks | 80 | |
exFAT Access (Optional) |
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exFAT Access (Optional) |
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Synology MailPlus / MailPlus Server |
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Synology MailPlus / MailPlus Server |
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Free Email Accounts | 5 (Licenses required for additional accounts) | |
Maximum Number of Concurrent Users | 1,100 | |
Maximum Server Performance | 4,471,000 emails per day, approx. 136GB | |
Notes |
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Media Server |
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Media Server |
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DLNA Compliance | ||
Moments |
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Moments |
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Facial Recognition | ||
Subject Recognition | ||
Auto Color & Rotate | ||
Moments Select | ||
PetaSpace |
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PetaSpace |
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Snapshot Replication |
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Snapshot Replication |
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Maximum Snapshots per Shared Folder | 1,024 | |
Maximum of System Snapshots | 65,536 | |
Surveillance Station |
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Surveillance Station |
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Maximum IP cam (Licenses required) | 100 (including 2 Free License) (See All Supported IP Cameras) | |
Total FPS (H.264)* |
3000 FPS @ 720p (1280x720) 2800 FPS @ 1080p (1920x1080) 1200 FPS @ 3M (2048x1536) 700 FPS @ 5M (2591x1944) 500 FPS @ 4K (3840x2160) |
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Total FPS (H.265)* |
3000 FPS @ 720p (1280x720) 3000 FPS @ 1080p (1920x1080) 2400 FPS @ 3M (2048x1536) 1300 FPS @ 5M (2591x1944) 800 FPS @ 4K (3840x2160) |
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Total FPS (MJPEG)* |
900 FPS @ 720p (1280x720) 650 FPS @ 1080p (1920x1080) 490 FPS @ 3M (2048x1536) 320 FPS @ 5M (2591x1944) |
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Notes | Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera. | |
Synology Drive |
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Synology Drive |
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Recommended Number of Hosted Files | 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | |
Recommended Number of Concurrent Sync Clients | 2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached) | |
Notes |
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Synology Office |
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Synology Office |
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Maximum Users | 3,400 | |
Notes |
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Video Station |
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Video Station |
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Video Transcoding | Group 1 - Type 1 (See more) | |
Maximum Transcoding Channel Number | 1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1 | |
Virtual Machine Manager |
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Virtual Machine Manager |
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Recommended Virtual Machine Instances | 16 (Learn more) | |
Recommended Virtual DSM Number (Licenses required) | 16 (including 1 Free License) | |
Notes | The specifications vary depending on system configuration and memory size. | |
VPN Server |
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VPN Server |
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Maximum Connections | 40 |
Notes:
- Model specifications are subject to change without prior notice.