SA6400 | Synology Inc.

SA6400

Handle growing data storage demands with ease

Trusted by professionals across all industries.

Information Technology Manager - Government

Director of Enterprise Infrastructure - Education

Director Media Services - Media

Senior Systems Engineer - Media

CEO - IT Services

Server Administrator - Retail

Highly scalable storage for enterprise and studios

The SA6400 can accommodate up to 1.9 PB with support for eight 12-bay RX1223RP expansion units. Direct connections from host to expansion units ensure optimal performance.

Download Datasheet

ScalabilityUp to 2.1 PB with 8 x RX1223RP expansion units

CPUOver 6,500/4,000 MB/s sequential read/write

NetworkingOptional 25/40GbE or Fibre Channel connectivity

Scalability with great performance

The SA6400 can accommodate up to 1.9 PB with support for eight 12-bay RX1223RP expansion units. Direct connections from host to expansion units ensure optimal performance.

Over10,000/6,200 MB/sread/write after expansion

Up to8expansion units

RX1223RP unitsdirectly connectto SA6400

Built for high reliability

The SA6400 is designed with built-in redundancies to keep mission-critical services running, even when disaster strikes.

Out-of-band (OOB) management

Remotely power on/off, force restart, and reset your server, or view real-time and historical DSM system logs, even while the device is powered off or the primary network is down, using the dedicated out-of-band management console.

Redundant power supply

Reduce the possibility of power disruptions on a single distribution channel or power distribution unit adversely impacting data and service availability with redundant PSUs.

Failover cluster

Combine two SA6400 units into a high-availability cluster with Synology High Availability to achieve full hardware and data redundancy. Minute-level failover minimizes data loss and downtime in the event of server failure, or while performing system updates or upgrades.Learn more

Advanced networking options

The SA6400 has the flexibility to accommodate different operating environments.

Built-in fast connectivity

Two 10GbE RJ-45 ports provide rapid transfer speeds right out of the box.

Configurable networking options

Add up to 2 extra 10GbE SFP+/RJ-45, 25GbE SFP28, or Fibre Channel ports in varying configurations.

Failover and network balancing

Bond multiple network interfaces with Link Aggregation to enable automatic network failover and load balancing.

Versatile data storage and business application platform

Provide easy access to business data, consolidate digital assets, or host cost-efficient business solutions.

Flexible file server

Central backup server

Business application platform

Flexible file server

Take advantage of the SA6400’s high storage capacity and expansion capability to host large amounts of data on a central repository. Provide user-friendly access to business data and set up powerful cross-site syncing to empower remote and multi-site collaboration.

Private cloud

A private cloud suite for file sharing

Empower your entire organization with a streamlined ability to access, share, and sync data from anywhere. Provide employees with access to corporate files through mobile apps, desktop clients, and a browser-based interface. Set granular file and folder access and sharing permissions. Maintain a full overview of file activities and track file share settings changes with detailed records in the Synology Drive Admin Console.Learn more

SMB/NFS implementation at scale

Leverage SMB or NFS protocols to provide efficient access to company files over the local network or VPN. Manage data access privileges with access control lists (ACL) through Active Directory/LDAP integration and protect files against tampering, loss, or removal with built-in snapshot technology.

Cross-site syncing

Secure site-to site file and folder syncing

Make sure branches always have up-to-date copies of crucial documents and data available locally by syncing Synology systems one or two-way using Synology Drive ShareSync. Have files updated across locations each time there is a change to efficiently keep all stakeholders on the same page.Learn more

Efficient cross-site syncing through the cloud

Boost syncing speeds, cut bandwidth use, and reduce your storage footprint by leveraging the powerful connectivity of our data centers. Synology Hybrid Share intelligently synchronizes data to Synology devices. Large or less frequently accessed files are stored on the cloud to reduce local storage requirements, while frequently used files are stored on local devices to provide users access at LAN speeds.Learn more

Central backup server

Back up PCs, servers, Synology systems, SaaS data, and VMs, and back up your backup servers themselves with a scalable central storage solution.

Enterprise backup storage

Scalable storage to store your growing backups

Safeguard your backups by storing backup copies in the SA6400 via ActiveProtect Vault without needing to drastically change your existing backup infrastructure.Learn more

Long-term backup storage for regulatory compliance

Store your backups with a secure and scalable storage solution that allows you to ensure compliance via long-term data retention.Learn more

Back up Synology storage systems

Backup destination for shares and LUNs

Use Hyper Backup to back up files, LUNs, installed applications, and system configurations from tens or hundreds of Synology servers to your SA6400. Set and forget backup tasks with regular schedules, enhance security with fine-grained user permissions and encryption, reduce backup sizes with built-in deduplication, and restore data flexibly with multi-versioning.Learn more
Snapshot Replication enables configurable point-in-time snapshots of shared folders and LUNs with an RPO as low as 5 minutes and recovery within seconds.Learn more

Bare-metal backup for Synology systems

Manage bare-metal backups of all your Synology servers from a single centralized console on the SA6400. Leverage built-in deduplication technology to reduce backup sizes while multi-versioning provides flexible restoration options.

Business application platform

Host cost-efficient business solutions, either through containers, virtual machines, or Synology DiskStation (DSM)’s own solutions, including a powerful free backup suite, a versatile mail server, and a surveillance VMS with transparent licensing.

Synology productivity solutions

Collaboration in a secure cloud

Create and edit documents, spreadsheets, and slides together with your whole team in real time. Easily migrate existing documents from other platforms and take ownership of your files in a secure private cloud.Learn more
Synology’s private cloud mail solution provides ease of use, full data ownership, and robust data security with a low total cost of ownership thanks to its perpetual licensing model.Learn more
Keep teams connected through encrypted one-on-one private chats, public channels, and group conversations. Efficiently organize discussions with bookmarks, searchable hashtags, and chatbots.Learn more

Containerization and virtualization-ready

Application test environment

Run Docker containers and VMs on SA6400 using Docker and Synology Virtual Machine Manager (VMM) — a hypervisor for virtualized versions of Windows^®, Linux^®, and DSM — to safely test and evaluate applications.
Virtual DSM serves as a test environment for package updates or to add an additional layer of security between applications, systems, and data. Learn more

Centralized monitoring and management

Stay on top of your fleet and keep it in optimal condition with our cloud and DSM-based monitoring and management solutions.

Central Management System (CMS)Conveniently manage your fleet of Synology systems from a centralized console.

Learn more

Active InsightA powerful cloud-based platform for monitoring performance, backup status, login activity and performing lightweight management tasks.

Learn more

Synology has you covered

The SA6400 is backed by Synology's 5-year limited warranty, including technical support and hardware replacement services to maximize your return on investment and ensure continued high-quality performance. Learn more

Performance backed by Synology drives

Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.

HDD

Enterprise Series 3.5" SATA

SSD

Enterprise Series 2.5" SATA

Enterprise Series M.2 NVMe

Hardware Overview

1Power Button and Indicator
2Status Indicator
3Alert Indicator
4Mute Button
5Drive Status Indicators

6Drive Trays
7Rail Kit Release Tabs
8PSU Fans
9Power Ports
10PSU Indicators

11Expansion Ports
12PCIe Expansion Slots
13Reset Button
14Console Port
15Management Port

16USB 3.2 Gen 1 ports
171GbE RJ-45 ports
1810GbE RJ-45 ports

Notes:Gartner® and Peer Insights™ are trademarks of Gartner, Inc. and/or its affiliates. All rights reserved. Gartner Peer Insights content consists of the opinions of individual end users based on their own experiences, and should not be construed as statements of fact, nor do they represent the views of Gartner or its affiliates. Gartner does not endorse any vendor, product or service depicted in this content nor makes any warranties, expressed or implied, with respect to this content, about its accuracy or completeness, including any warranties of merchantability or fitness for a particular purpose.Performance figures are obtained through internal testing by Synology. Actual performance may vary depending on the testing environment, usage, and configuration. See performance charts for more information.Figures are from SA6400 running DSM 7.2 with 128GB of RAM, 2 x E25G21-F2 25GbE NICs, 12 x SAT5210-960G SSDs in 2 x RAID 6 volumes, and 3 x RX1223RP expansion units each with 12 x SAT5210-960G SSDs in RAID 6 volumes. Actual performance may vary depending on hardware and software configuration, workload, and testing environment.For the most up-to-date list of compatible NICs, please check our compatibility list.C2 Storage for Hyper Backup and Hybrid Share requires purchase of an eligible annual or monthly subscription. A free trial is available for each newly registered device.Certain advanced features require Virtual Machine Manager Pro. One Virtual DSM license is included. Additional Virtual DSM instances require the purchase of Virtual DSM Licenses.The warranty period starts from the date of purchase as stated on your purchase receipt. Visit https://www.synology.com/company/legal/warranty for more information.

Hardware Specs

Software Specs

Hardware Specifications
CPU
CPU	CPU Model	AMD EPYC 7272
	CPU Quantity	1
	CPU Cores	12
	CPU Threads	24
	CPU Architecture	64-bit
	CPU Frequency	2.9 (base) / 3.2 (turbo) GHz
	Hardware Encryption Engine
Memory
Memory	System Memory	32 GB DDR4 ECC RDIMM
	Total Memory Slots	16
	Maximum Memory Capacity	1024 GB (64 GB x 16)
	Notes	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. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion. For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
Storage
Storage	Drive Bays	12
	Maximum Drive Bays with Expansion Unit	108 (RX1223RP x 8)
	Drive Type (See all supported drives)	3.5" SATA HDD 2.5" SATA SSD
	Hot Swappable Drive*
	Notes	Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.
External Ports
External Ports	RJ-45 1GbE LAN Port	4
	RJ-45 10GbE LAN Port	2
	Out-of-Band Management LAN Port	1
	Max. Number of LAN Ports	15
	USB 3.2 Gen 1 Port	2
	Expansion Port	8
	Expansion Port Type	Mini-SAS HD
PCIe
PCIe	PCIe Expansion	2 x Gen3 x8 slots (x8 link)
Appearance
Appearance	Form Factor (RU)	2U
	Size (Height x Width x Depth)	88 mm x 482 mm x 724 mm
	Weight	16.5 kg
	Rack Installation Support*	4-post 19" rack (Synology Rail Kit - RKS-02)
	Notes	The rail kit is sold separately
Others
Others	System Fan	80 mm x 80 mm x 4 pcs
	Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode
	Easy Replacement System Fan
	Power Recovery
	Noise Level*	55.5 dB(A)
	Scheduled Power On / Off
	Wake on LAN / WAN
	Power Supply Unit / Adapter	550 watts
	Redundant Power Supply
	AC Input Power Voltage	100V to 240V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption	180.5 watts (Access) 88.56 watts (HDD Hibernation)
	British Thermal Unit	615.89 BTU/hr (Access) 302.18 BTU/hr (HDD Hibernation)
	Notes	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 G.R.A.S. type 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%.
Temperature
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)
	Operating Humidity	8% to 80% RH
	Storage Humidity	5% to 95% RH
Certification
Certification	FCC CE BSMI VCCI RCM UKCA EAC CCC KC BIS UL
Warranty
Warranty	5 Years
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment
Environment	RoHS Compliant
Packaging Content
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC Power Cord X 2 Quick Installation Guide X 1
Optional Accessories
Optional Accessories	DDR4 ECC RDIMM: D4ER02-32G/D4ER01-64G Expansion Units: RX1223RP Enterprise Series 3.5" SATA HDD: HAT5300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1 M.2 SSD Adapter Card: M2D20 25GbE Network Interface Card: E25G30-F2 10GbE Network Interface Card: E10G30-F2/E10G30-T2/E10G18-T1 Rail Kit Sliding: RKS-02
	Notes	For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.

DSM Specifications
Storage Management
Storage Management	Maximum Single Volume Size	1 PB (64 GB memory required, for RAID 6 groups only) 200 TB 108 TB
	Maximum Internal Volume Number	256
	SSD Read/Write Cache (Determining cache size)
	SSD TRIM
	RAID Group
	Supported RAID Type	RAID F1 Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10
	RAID Migration	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6
	Volume Expansion with Larger HDDs	RAID F1 RAID 1 RAID 5 RAID 6 RAID 10
	Volume Expansion by Adding a HDD	RAID F1 JBOD RAID 5 RAID 6
	Global Hot Spare Supported RAID Type	RAID F1 RAID 1 RAID 5 RAID 6 RAID 10
	Notes	Volumes over 108 TB require 32 GB of memory or more. Actual maximum storage pool and volume sizes depend on drive sizes 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. When Peta Volume is enabled, validated services and packages are required. Please refer to this article for more information on limitations.
File System
File System	Internal Drives	Btrfs ext4
	External Drives	Btrfs ext4 ext3 FAT32 NTFS HFS+ exFAT
File Services
File Services	File Protocol	SMB AFP NFS FTP WebDAV Rsync
	Maximum Number of SMB Connections (FSCT-Based)	10,000
	Windows Access Control List (ACL) Integration
	NFS Kerberos Authentication
	Notes	Connection value of this model is tested with Synology SATA SSD fully populated and up to four 10GbE network ports Models with expandable memory are tested with the maximum supported quantity installed. 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
Account & Shared Folder
Account & Shared Folder	Maximum Local User Accounts	15,360
	Maximum Local Groups	512
	Maximum Shared Folder	512
	Maximum Shared Folder Sync Tasks	32
Hybrid Share
Hybrid Share	Maximum Hybrid Share Folders	30
Hyper Backup
Hyper Backup	Folder and Package Backup
	Entire System Backup
	Notes	Full-system backup requires DSM 7.2 or later.
High Availability
High Availability	Synology High Availability
Log Center
Log Center	Syslog Events per Second	3,000
Virtualization
Virtualization	VMware vSphere	ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5
	Microsoft Hyper-V	Windows Server 2022
	Citrix XenServer	XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
	OpenStack	Cinder
General Specifications
General Specifications	Supported Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
	Supported Browsers	Chrome Firefox Edge Safari
	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
	Notes	For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Central Management System
Central Management System
Synology AI Console
Synology AI Console	Third-Party AI Model Integration
	Maximum De-Identification Rate	10,100 words per second
	Notes	De-identification performance measurement: Filters for Credit Card Numbers, IBAN, Individual Taxpayer Identification Number, SSN, and Names applied to a 4,355-word English text. To enable de-identification, your device must have at least 8 GB of memory and Container Manager installed.
Synology Chat
Synology Chat	Maximum Number of Users	1,500
	Notes	Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds. Models with expandable memory are tested with the maximum supported quantity installed.
Download Station
Download Station	Maximum Concurrent Download Tasks	80
SAN Manager
SAN Manager	Maximum iSCSI Target Number	256
	Maximum LUN	512
	LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server
Synology MailPlus / MailPlus Server	Free Email Accounts	5 (Additional accounts require purchase of licenses)
	Maximum Number of Users	14,500
	Notes	The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users receiving 20 emails per day. Learn more Models with SSD support are tested with a single SSD volume. Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements. Operating in high-availability mode will incur additional overhead. Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).
Media Server
Media Server	DLNA Compliance
Synology Photos
Synology Photos	Facial Recognition
	Object Recognition
Snapshot Replication
Snapshot Replication	Maximum Snapshots per Shared Folder	1,024
	Maximum Snapshots per LUN	256
	Maximum Snapshots per System	65,536
	Maximum Replication Tasks for Shared Folders	128
	Maximum Replication Tasks for LUNs	64
	Maximum Replication Tasks per System	128
Surveillance Station
Surveillance Station	Default Licenses	2 (Additional cameras require purchase of licenses)
	Maximum IP Cameras and Total FPS (H.264)	1080p: 160 channels, 2800 FPS 3M: 160 channels, 1600 FPS 5M: 120 channels, 1200 FPS 4K: 80 channels, 800 FPS
	Maximum IP Cameras and Total FPS (H.265)	1080p: 200 channels, 6000 FPS 3M: 160 channels, 2800 FPS 5M: 160 channels, 1600 FPS 4K: 120 channels, 1200 FPS
	Notes	Surveillance Station 9.1.3 or above is required to support the maximum IP cameras and FPS figures listed. 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. Performance metrics improve with the addition of expansion units. For detailed figures, please refer to this article.
Synology Drive
Synology Drive	Maximum Number of Users	24,800
	Maximum Number of Hosted Files	100,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
	Notes	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. Models with expandable memory are tested with the maximum supported quantity installed. 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.
Synology Office
Synology Office	Maximum Number of Users	21,300
	Notes	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. Models with expandable memory are tested with the maximum supported quantity installed. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Virtual Machine Manager
Virtual Machine Manager	Recommended Virtual Machine Instances	24 (Learn more)
	Recommended Virtual DSM Number (Licenses required)	24 (including 1 Free License)
	Notes	The specifications vary depending on system configuration and memory size.
VPN Server
VPN Server	Maximum Connections	32

Notes: Model specifications are subject to change without prior notice. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.