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Synology RS1626xs+ RackStation 4-Bay Scalable NAS ( RAIL KIT optional ) PLS USE RKS-04 RAILKIT only

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Part Number:
562701
(?) Brand:
Synology Web Site
Manuf No:
RS1626xs+
Shipping Weight:
18.16 KG (Includes product packaging)
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RS1626xs+, SY40064

Scalable 4-bay rackmount solution designed for high-performance business needs

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Fast and reliable
Over 84,000 random write IOPS2, built-in dual-port 10GbE, and up to 384 TB raw storage after expansion3,4
Flexible configuration
Add 12 extra drive bays, 10/25GbE ports5, and SSD cache volumes whenever needed6
Versatile business application platform
Back up endpoints, manage up to 75 IP cameras7, or safely sync and share files across sites

Designed for reliability

Redundant power

Redundant power supplies ensure maximum server uptime by preventing single-point power failures.

Failover cluster

Maximize service continuity by pairing two identical units into a Synology High Availability cluster, ensuring automated, minute-level failover in the event of hardware failure.

Network redundancy and load balancing

Built-in 2x 10GbE ports can be bonded with Link Aggregation to enable automatic network failover and load balancing.

Image showing the redundant power ports of RS1626xs+

Accommodates future expansion

The RS1626xs+ can be flexibly configured to meet evolving needs through faster networking, local SSD cache, or increased storage.

Improve I/O performance or add redundancy with optional 10GbE or 25GbE SFP+/SFP28 and 10GbE Ethernet NICs, or Fibre Channel HBAs.
Two integrated M.2 slots support NVMe SSD caching to reduce latency and improve IOPS in HDD arrays, without occupying PCIe expansion slots or front drive bays.
Expand to 16 drive bays with RX1225RP expansion unit.
Image showing Synology add-in cards of 10GbE and 25GbE for connectivity upgrade
Image showing Synology SATA SSDs and Synology M.2 SSDs for SSD cache
Image showing RS1626xs+ connecting to the Synology RX1225RP Expansion Unit for capacity expansion

Automated storage tiering

Synology Tiering automatically moves infrequently accessed data to cost-efficient tiers, balancing performance and capacity to optimize your storage ROI. The RS1626xs+ can be configured as either hot or cold storage, providing the flexibility to complement your existing hardware and infrastructure.Learn more

Image showing Synology Tiering working with high-performance storage and cost-effective storage

Intuitive storage for on-site and remote teams

Provide secure and convenient cross-platform tile access, sharing, and synchronization across multiple locations.

A secure private cloud solution for enterprise collaboration

Empower your entire organization with streamlined access, sharing, and syncing of data from any location. Establish granular control over file and folder access and sharing permissions. Maintain a comprehensive audit trail of file activities and track changes to file share settings with detailed records.Learn more
Access personal and shared data from mobile apps, desktop clients, web browsers, or another Synology system. Any changes you make are automatically synced to other devices as soon as they are connected.
Image showing ways to access your Synology private cloud. Packages shown are Synology Drive, Synology Drive Client, and Synology Drive ShareSync.
Image showing ways to access your Synology private cloud. Packages shown are Synology Drive, Synology Drive Client, and Synology Drive ShareSync.

Efficient multi-site synchronization

Empower global workflows with high-speed access to data from anywhere in your network. Our hybrid cloud solution caches frequently used files locally for rapid access, while less frequently accessed data is stored in the cloud, reducing your on-site storage requirements.8Learn more
Automate site-to-site data synchronization for better team workflows. Options for one-way or two-way syncing keeps files and folders up-to-date across every data site.Learn more
Connect seamlessly to public cloud services including Amazon S3, BackBlaze B2, Dropbox, Google Cloud Storage, Microsoft Azure, and OpenStack Swift. Multiple protocol support, client-side encryption, and customizable sync and bandwidth controls enable efficient storage management across various platforms.Learn more
Image showing a Synology system syncing to another Synology system using Hybrid Share for C2 Storage.
Image showing a Synology system syncing to another Synology system using Drive ShareSync
Cloud Sync is compatible with major public cloud services

Collaboration in a secure cloud, assisted by AI

Enhance workplace collaboration with Synology Office Suite. Create, edit, and share documents across teams in real time. Host an on-premises mail server to provide web-based email access while maintaining full data ownership.9Additionally, stay connected through secure one-on-one chats, public channels, encrypted private channels, and group conversations. AI assistance enhances productivity across apps, with support for leading AI providers via API key integration.Learn more

Image showing icons of Synology Office, MailPlus, and Chat
Hardware Specifications
CPU
CPU ModelIntel Xeon D-1726
CPU Quantity1
CPU Cores6
CPU Threads12
CPU Architecture64-bit
CPU Frequency2.9 (base) / 3.5 (turbo) GHz
Hardware Encryption Engine
Memory
System Memory16 GB DDR4 ECC RDIMM
Memory Module Pre-installed16 GB (16 GB 1)
Total Memory Slots4
Maximum Memory Capacity64 GB (16 GB x 4)
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 theProduct Manualof your Synology product for recommended memory configurations.
Storage
Drive Bays4
Maximum Drive Bays with Expansion Unit16 (RX1225RP 1)
M.2 Drive Slots2 (NVMe)
Drive Type(See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA SSD
  • M.2 2280 NVMe SSD
Hot Swappable Drive*
Notes
  • The hot swappable drive feature is not supported by M.2 SSD slots.
  • Compatible drives are mandatory. Please consult ourcompatibility listbefore purchasing hard drives. For more details, please refer tothis article.
External Ports
RJ-45 10GbE LAN Port2
Out-of-Band Management LAN Port1
USB 3.2 Gen 1 Port2
Expansion Port1
Expansion Port TypeMini-SAS HD
PCIe
PCIe Expansion1 x Gen4 x8 slot (x8 link)
Appearance
Form Factor (RU)1U
Size (Height x Width x Depth)44 mm 481.9 mm 668.5 mm
Weight9.5 kg
Rack Installation Support*4-post 19" rack (Synology Rail Kit -RKS-04)
NotesThe rail kit is sold separately
Others
System Fan40 mm 40 mm 4 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level*52.6 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter250 watts
Redundant Power Supply
AC Input Power Voltage100V to 240V AC
Power Frequency50/60 Hz, Single Phase
Power Consumption97.59 watts (Access)
56.19 watts (HDD Hibernation)
British Thermal Unit332.78 BTU/hr (Access)
191.61 BTU/hr (HDD Hibernation)
Notes
  • For more information on how power consumption is measured, refer tothis 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: 24.25-25.75C; Humidity: 58.2-61.8%.
Temperature
Operating Temperature5C to 35C (32F to 95F)
Storage Temperature-20C to 60C (-5F to 140F)
Operating Humidity8% to 80% RH
Storage Humidity5% to 95% RH
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • BIS
  • UL
Warranty
5 Years
NotesThe warranty period starts from the purchase date as stated on your purchase receipt.(Learn more)
Environment
RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • C13 to C14 power cord X 2
  • Front Cover X 1
Optional Accessories
  • DDR4 ECC RDIMM:D4ER02-16G
  • Expansion Units:RX1225RP
  • Enterprise Series 3.5" SATA HDD:HAT5300 Series
  • Enterprise Series 2.5" SATA SSD:SAT5200 Series
  • Enterprise Series M.2 2280 NVMe SSD:SNV3400 & SNV5400 Series
  • 25GbE Network Interface Card:E25G30-F2
  • 10GbE Network Interface Card:E10G30-F2/E10G30-T2/E10G30-T1
  • Rail Kit Sliding:RKS-04
NotesFor multi-module memory configurations, all modules must be identical and share the same model number. Check theProduct Manualof your Synology product for recommended memory configurations.
Notes:
  1. Model specifications are subject to change without prior notice.
  2. 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.
  3. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
  4. If usage requirements exceed the specifications above, please contact ourregional partnersfor professional advice.

DSM Specifications
Storage Management
Maximum Single Volume Size
  • 1 PB (64 GB memory required, for RAID 6 groups only)
  • 200 TB (32 GB memory required)
  • 108 TB
Maximum Internal Volume Number32
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 (with Expansion Unit)
Global Hot Spare Supported RAID Type
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Notes
  • Volumes over 108 TB require 32 GB of memory or more.
  • Certain conditions are required to support a 1 PB volume. Please refer tothis articlefor 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.
File System
Internal Drives
  • Btrfs
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
File Services
File Protocol
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Number of SMB Connections (FSCT-Based)1,900
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
Maximum Local User Accounts2,048
Maximum Local Groups512
Maximum Shared Folder512
Maximum Shared Folder Sync Tasks12
Hybrid Share
Hybrid Share Folder Number15
Hyper Backup
Data & Folder Backup
Entire System Backup
High Availability
Synology High Availability
Log Center
Syslog Events per Second3,000
Virtualization
VMware vSphereESXi 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
Citrix XenServerXenServer 8.4, XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
OpenStackCinder
General Specifications
Supported ProtocolsSMB1 (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 LanguageEnglish, Deutsch, Franais, Italiano, Espaol, Dansk, Norsk, Svenska, Nederlands, , Polski, Magyar, Portugus do Brasil, Portugus Europeu, Trke, esk, , , , ,
NotesFor an updated list of supported browser versions, check theDSM Technical Specifications.
Add-on Packagesview the complete package list
Central Management System
Synology AI Console
Third-Party AI Model Integration
Maximum De-Identification Rate1,700 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
Maximum Number of Users400
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
Maximum Concurrent Download Tasks80
SAN Manager
Maximum iSCSI Target Number256
Maximum LUN512
LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server
Free Email Accounts5(Additional accounts require purchase of licenses)
Maximum Number of Users3,600
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
DLNA Compliance
Synology Photos
Facial Recognition
Object Recognition
Snapshot Replication
Maximum Snapshots per Shared Folder256
Maximum Snapshots per LUN64
Maximum Snapshots per System4,096
Maximum Replication Tasks for Shared Folders32
Maximum Replication Tasks for LUNs16
Maximum Replication Tasks per System32
Surveillance Station
Default Licenses2(Additional cameras require purchase of licenses)
Maximum IP Cameras and Total FPS (H.264)
  • 1080p: 75 channels, 1050 FPS
  • 3M: 60 channels, 600 FPS
  • 5M: 40 channels, 400 FPS
  • 4K: 28 channels, 280 FPS
Maximum IP Cameras and Total FPS (H.265)
  • 1080p: 75 channels, 2250 FPS
  • 3M: 75 channels, 1125 FPS
  • 5M: 70 channels, 700 FPS
  • 4K: 49 channels, 490 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.
  • UseNVR Selectorto 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
Maximum Number of Users3,100
Maximum Number of Hosted Files25,000,000 (applies to files indexed or hosted bySynology 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
Maximum Number of Users3,000
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
Recommended Virtual Machine Instances12(Learn more)
Recommended Virtual DSM Number(Licenses required)12 (including 1 Free License)
NotesThe specifications vary depending on system configuration and memory size.
VPN Server
Maximum Connections12
Notes:
  1. Model specifications are subject to change without prior notice.
  2. 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.
  3. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
  4. If usage requirements exceed the specifications above, please contact ourregional partnersfor professional advice.

No additional files, specification sheets, guides or documentation found for product.

Warranty: 1 Year Return to Base

Full manufacturers warranty details are available at the manufacturers (Synology) web site.

Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

To apply for return of a product just go to our returns page.

These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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