RackStation RS11626xs+ RackStation RS11626xs+
RackStation RS11626xs+ Powerful enterprise storage for mission-critical data environments
Talk to an expert
Features Specs Accessories
Trusted by professionals across all industries.
Synology is a solid storage with great capabilities out of the box. The licensing model of all-inclusive software adds great value to the product.
Information Technology Manager - Government
Synology provides a single-platform solution for all of our backup needs in a cost effective manner.
Director of Enterprise Infrastructure - Education
Synology's DSM is a masterpiece, designed to be user-friendly even for non-IT professionals, helping us become less reliant on out IT teams.
Director Media Services - Media
Working with Synology Products has just been the best. Its an all in one product that can cater for all aspects of Storage.
Senior Systems Engineer - Media
The Synology brand is very feature-rich and unbeatable in terms of price/performance in the NAS segment. Our current testing was primarily focused on backup, which delivered reliability alongside adequate performance.
CEO - IT Services
Smooth storage server setup with intuitive OS and reliable automation features
Server Administrator - Retail
Infrastructure built for long-term growthDownload Datasheet Centralized data management platformConsolidate file services, block storage, sandbox environments, and replication targets under a centralized platformSeamless infrastructure scalingRS11626xs+ scales from 384 TB to over 2.6 PB of raw capacity across block and file workloadsEnterprise-grade reliability and securityLayered failover mechanisms, built-in security controls, and non-disruptive updates ensure critical applications remain online, compliant, and protected at every stage of business growth
Unique hardware designPrimary storageCache or separate volumeOS isolation
16 bays for 3.5" / 2.5" HDDHigh-capacity HDD support with the flexibility to incorporate SSDs as workload profiles change.
4 bays for 2.5" SSDAccelerate HDD volumes with SATA SSDs as read/write cache, or create a dedicated SSD volume for latency-sensitive workloads.
2 x M.2 slots for system drivesOffload system activity from the data pool with dual embedded M.2 NVMe SSDs running DSM in RAID 1.
Performance at enterprise scale4K Random IOPS64K Sequential throughput
Read: 800K+ IOPS
Write: 200K+ IOPS
Read: 10,500+ MB/s
Write: 8,200+ MB/s
Scalability backed by redundancyExpand storage capacity with resilient connectivity to support growing business needs.Multi-petabyte scalabilityThe RS11626xs+ supports incremental expansion up to 2.6 PB of raw capacity across 116 drive bays using eight Synology RX1222sas expansion units, with zero service downtime.High-reliability expansion architectureRedundant SAS links prevent single points of failure from affecting other expansion units, ensuring higher data and service availability.Designed for maximum uptimeThe RS11626xs+ incorporates multiple redundancy mechanisms to eliminate single points of failure across power, storage, and networking layers.
Redundant power
SAS multipathing
Network redundancy and load balancing
Failover cluster
Remote diagnostics
 Redundant power supplies ensure maximum server uptime by preventing single-point power failures. SAS multipath-enabled connectivity provides up to double the typical performance together and increased redundancy. Built-in dual 10GbE ports can be bonded with Link Aggregation to enable automatic network failover and load balancing. Two RS11626xs+ units can be paired with Synology High Availability to enable automatic minute-level failover. A dedicated OOB management interface enables remote diagnostics and log access for powered-down systems, reducing time-to-resolution for critical incidents.
Redundant power
SAS multipathing
Network redundancy and load balancing
Failover cluster
Remote diagnostics
Redundant power supplies ensure maximum server uptime by preventing single-point power failures. SAS multipath-enabled connectivity provides up to double the typical performance together and increased redundancy. Built-in dual 10GbE ports can be bonded with Link Aggregation to enable automatic network failover and load balancing. Two RS11626xs+ units can be paired with Synology High Availability to enable automatic minute-level failover. A dedicated OOB management interface enables remote diagnostics and log access for powered-down systems, reducing time-to-resolution for critical incidents.
Accommodates future expansionThe RS11626xs+ can be flexibly configured to meet evolving needs through faster networking and SSD cache.Flexible networking optionsImprove I/O performance or add redundancy with 10GbE/25GbE SFP+/SFP28, 10GbE RJ-45 Ethernet, or Fibre Channel adapters.SSD cacheReduce latency and increase IOPS with the performance boost of SSD caching.
Automated storage tiering
Synology Tiering automatically moves infrequently accessed data to cost-efficient tiers, balancing performance and capacity to optimize your storage ROI. The RS11626xs+ can be configured as either hot or cold storage, providing the flexibility to complement your existing hardware and infrastructure.Learn more about Synology Tiering
Secure private cloud
Centralize file sharing, syncing, and access control across your entire organization. With multi-platform support, granular permissions, and seamless synchronization across sites and public cloud services, your teams stay productive from anywhere while your data stays yours.Learn more about data management
AI-Assisted collaboration suite
Give your teams a fully integrated, on-premises workspace for document collaboration, email, and messaging with the privacy of self-hosted infrastructure and the intelligence of built-in AI assistance. Connect your preferred AI providers via API to enhance productivity apps, without compromising data ownership.Learn more about business productivity
Work smarter with AIAn all-in-one private cloud productivity AI solution with smart tools and privacy controls. Learn more MailPlusDocumentSlidesSpreadsheetSummarize emails and generate smart repliesWrite and polish draftsOne-click translation of the entire presentation and annotationsAnalyze data and get formula suggestions
Comprehensive backup & recovery
Protect every layer of your infrastructure — endpoints, virtual machines, NAS/SAN systems, and cloud workloads including Microsoft 365 and Google Workspace — under a single backup platform. Advanced features like immutable snapshots, block-level deduplication, multi-version retention, self-healing, and bare-metal recovery ensure your data is always recoverable when it matters most.Learn more about data protection
Virtualization-ready storage
The RS11626xs+ is designed to integrate seamlessly into enterprise virtualization and cloud environments, with full certification for VMware vSphere, Microsoft Hyper-V, and XenServer. Built-in support for ODX, VAAI, ALUA, and OpenStack Cinder offloads storage operations and accelerates performance at scale.Learn more about virtualization
Logos showing certification or compatibility for Windows Server, VMWare, Citrix, and Openstack
Unified surveillance management
Manage your entire physical security infrastructure from one platform. With support for over 17,000 IP camera models, centralized monitoring and playback, and an open API ecosystem for third-party AI analytics and hardware, Surveillance Station scales with your security needs — today and into the future.Learn more about surveillance solution
Centralized fleet managementMonitor and manage your Synology fleet from a central interface, on-prem or in the cloud.Central Management SystemManage Synology servers from a central console using group policies, task delegation, batch updates, and more.Learn moreActive InsightMonitor your global Synology fleet's performance, backup status, login activity, and more with the power of the cloud.Learn more
Performance backed by Synology drivesDesigned for Synology systems, Synology drives deliver consistent performance and unmatched reliability for your deployments.
HDD
Enterprise Series 3.5" SATA
SSD
Enterprise Series 2.5" SATAEnterprise Series M.2 NVMe
Hard drives designed for SynologySee how Synology hard drives deliver reliability, consistent performance, and simplified system management through deep hardware-software integration.Watch video Synology has you coveredThe RS11626xs+ is backed by Synology's five-year limited warranty, including technical support and hardware replacement services to maximize your return on investment and ensure continued high-quality performance.Learn moreMore than half of Fortune 500 companies rely on Synology solutionsCarousel showcasing logos of partner companies
 Find out why Hardware Overview
  • 1Power button and indicator
  • 2Status indicator
  • 3Alert indicator
  • 4Alarm silence button
  • 5Drive status indicators
  • 6Drive trays
  • 7Rail kit release tabs
  • 8PSU fans
  • 9Power ports
  • 10Mounting holes
  • 11PSU indicators
  • 12PCI Express expansion slots
  • 13Expansion ports
  • 14Management port
  • 15USB 3.2 Gen 1 ports
  • 1610GbE RJ-45 ports
  • 17Reset button
  • First Product Image
  • Second Product Image
  • Third Product Image
  • Fourth Product Image
  • Fifth Product Image
  • Sixth Product Image
  • common.wcag_label_order_7 Product Image
Take the next stepContact a product expert for more informationLearn moreFind a Synology partner in your regionLearn moreNotes: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.Raw capacity calculated using 24 TB drives. Usable storage capacity may vary depending on drives used and RAID configuration.Compatible drives are mandatory. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.SSD cache can be enabled with select compatible SSD. See the compatibility list for model-specific support and details. SSDs are sold separately.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.For the complete and most up-to-date list of compatible NICs, HBAs, and other accessories, please check our compatibility list.Five MailPlus email accounts are included. Additional email accounts can be added with the purchase of Synology MailPlus License Packs. Learn moreSurveillance Station includes two free licenses. Connecting more cameras and devices requires additional licenses. Learn moreThe 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 7303
CPU Quantity 1
CPU Cores 16
CPU Threads 32
CPU Architecture 64-bit
CPU Frequency 2.4 (base) / 3.4 (turbo) GHz
Hardware Encryption Engine
Memory
Memory
 System Memory 64 GB DDR4 ECC RDIMM
Memory Module Pre-installed 64 GB (64 GB × 1)
Total Memory Slots 16
Maximum Memory Capacity 1024 GB (64 GB × 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 (See all supported drives)
16 × 3.5" SATA HDD or 2.5" SATA SSD
4 × 2.5" SATA SSD
Maximum Drive Bays with Expansion Unit 116 (RX1222sas × 8)
System Drive 2 × M.2 NVMe SSD (pre-installed)
Multipath I/O for Expansion Unit
Hot Swappable Drive*
Notes
  • Compatible drives are mandatory. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.
  • SSD cache can be enabled with select compatible SSD. See the compatibility list for model-specific support and details. SSDs are sold separately.
External Ports
External Ports
 RJ-45 10GbE LAN Port 2
Out-of-Band Management LAN Port 1
USB 3.2 Gen 1 Port 2
Expansion Port 8
Expansion Port Type Mini-SAS HD
PCIe
PCIe
 PCIe Expansion 2 × Gen4 x16 slot (x16 link)
Appearance
Appearance
 Form Factor (RU) 3U
Size (Height × Width × Depth) 132.3 mm × 482 mm × 724 mm
Weight 19.68 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 × 80 mm × 4 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level 52.9 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 800 watts
Redundant Power Supply
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption 238.4 watts (Access)
127.26 watts (HDD Hibernation)
British Thermal Unit 812.94 BTU/hr (Access)
433.96 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 × 1
  • Accessory Pack × 1
  • C13 to C14 power cord × 2
  • Front Cover × 1
Optional Accessories
Optional Accessories
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 (for RAID 6 groups only)
  • 200 TB
  • 108 TB
Maximum Internal Volume Number 32
SSD Read/Write Cache (Determining cache size)
SSD TRIM
Storage Efficiency
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.
  • Certain conditions are required to support a 1 PB volume. Please refer to this article for more information.
  • 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.
  • Storage efficiency helps reduce storage space consumption through deduplication and compression. For more information about this feature and its support requirements, please refer to this article.
File System
File System
 Internal Drives
  • Btrfs
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
 Hybrid Share Folder Number 30
Hyper Backup
Hyper Backup
 Data & Folder Backup
Entire System Backup
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 8.4, 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 12,000 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 25,000
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: 400 channels, 4000 FPS
  • 3M: 300 channels, 3000 FPS
  • 5M: 200 channels, 2000 FPS
  • 4K: 150 channels, 1500 FPS
Maximum IP Cameras and Total FPS (H.265)
  • 1080p: 450 channels, 13500 FPS
  • 3M: 400 channels, 4000 FPS
  • 5M: 300 channels, 3000 FPS
  • 4K: 200 channels, 2000 FPS
Notes
  • 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.
Synology Drive
Synology Drive
 Maximum Number of Users 37,300
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 36,200
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 32 (Learn more)
Recommended Virtual DSM Number (Licenses required) 32 (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.
Compatible Synology Accessories
RX1222sas
3.5" SATA HDD
Enterprise Series
  • HAT5320-4T
  • HAT5320-8T
  • HAT5300-12T
  • HAT5310-16T
  • HAT5320-20T
  • HAT5320-24T
2.5" SATA SSD
Enterprise Series
  • SAT5221-480G
  • SAT5221-960G
  • SAT5221-1920G
  • SAT5221-3840G
  • SAT5210-7000G
M.2 NVMe SSD
Enterprise Series
  • SNV5420-400G
  • SNV5420-800G
  • SNV5420-1600G
  • M2D20
  • E25G30-F2
  • E10M20-T1
  • E10G30-T2
  • E10G30-T1
  • E10G30-F2
D4ER02-64G
RX1222sas
3.5" SATA HDD
Enterprise Series
  • HAT5320-4T
  • HAT5320-8T
  • HAT5300-12T
  • HAT5310-16T
  • HAT5320-20T
  • HAT5320-24T
2.5" SATA SSD
Enterprise Series
  • SAT5221-480G
  • SAT5221-960G
  • SAT5221-1920G
  • SAT5221-3840G
  • SAT5210-7000G
M.2 NVMe SSD
Enterprise Series
  • SNV5420-400G
  • SNV5420-800G
  • SNV5420-1600G
  • M2D20
  • E25G30-F2
  • E10M20-T1
  • E10G30-T2
  • E10G30-T1
  • E10G30-F2
D4ER02-64G
Notes: For more information about drive firmware, EOL accessories, etc, see Synology Product Compatibility list.