Synology RackStation RS3621xs+ NAS Rack (2U) Intel® Xeon® D D-1541 8 GB DDR4 24 TB HDD DiskStation Manager Black

SKU
RS3621XS+/24T/6X4T
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24TB, 2U, Intel Xeon D-1541 (8x 2.1GHz), 8GB DDR4, 12x 2.5"/3.5", 4x 1GbE RJ-45, 2x 10GbE RJ-45, 2x USB 3.2 Gen1
More Information
Type NAS
Processor Intel Xeon D
Ethernet ports 6
Storage drives installed Yes
SKU RS3621XS+/24T/6X4T
Manufacturer Synology
Availability In Stock
Product Family RackStation
Accelerate your business operations
The 12-bay RS3621xs+ is capable of delivering over 238K 4K random read IOPS and 5,819 MB/s sequential read throughput1— a true enterprise powerhouse. With full power supply redundancy, an 8-core processor, ECC memory, advanced snapshot technology, and file self-healing, the RS3621xs+ provides a reliable foundation to any data-driven business.

Storage you can trust
The RS3621xs+ keeps your data protected while you concentrate on delivering the best results to your customers — even when disaster strikes.
Redundant power
Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans allow them to be replaced without powering down the system.
Maximize service availability
Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover.
Next-generation file system
Btrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots.

Tailored to your business
The RS3621xs+ includes two PCIe slots for performance, networking, and storage upgrades enabling it to adapt to any business environment.
Double bandwidth
Upgrade network bandwidth in minutes by 2x or more with Synology’s range of 10GbE NICs.
SSD cache
Boost read/write IOPS by up to 16 times by enabling SSD cache with our Synology M.2 NVMe adapter cards and SNV3500 SSDs or by installing one or more 2.5” SAT5200 SSDs.
Storage expansion
Quickly and easily scale up to 36 drives with two RX1217(RP) expansion units.

License-free data protection
Hyper Backup
A comprehensive backup and recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage used.
Snapshot Replication
Easily schedule flexible point-in-time backups of shared folders and iSCSI LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption.
Active Backup Suite
Enables administrators to easily backup the entire IT infrastructure to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Backups benefit from deduplication, multiversioning, and optimizations to reduce bandwidth and storage used.

Storage for virtualization
Synology iSCSI storage supports mainstream virtualization solutions with an easy management interface to enhance usability. VMware vSphere 6.5 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally, Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments.

Complete surveillance solution
Synology Surveillance Station transforms the RS3621xs+ into a feature-packed Network Video Recorder solution. Support for up to 90 IP cameras and video analytics such as motion detection, no idle zone, foreign object detection, and anomaly detection cater to the most common surveillance scenarios.
Secure and private
AES-256 encryption adds additional security to the locally-stored footage.
Access from anywhere, anytime
Access recordings and live streams whenever you want using a web browser, desktop client, or the DS cam mobile app.
Real-time alerts
Email, SMS, or push notifications alert you when incidents occur or predefined conditions are met.

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

Powered by Synology DiskStation Manager
The RS3621xs+ runs Synology DiskStation Manager (DSM), the web-based operating system with applications and services designed specifically for businesses.
Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Collaboration Suite
Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.
Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.
Security
Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.
Public Cloud Integration
Back up and synchronize data easily between public cloud accounts and your NAS.
Storage
Total installed storage capacity24 TB
Online RAID migrationYes
Online RAID expansionYes
Storage drives installedYes
Installed storage drive typeHDD
Number of storage drives installed6
Supported storage drive typesHDD & SSD
Number of storage drives supported12
Storage drive capacity4 TB
Hot-swap drive baysYes
RAID supportYes
Supported file systemsBTRFS, Fat, HFS+, NTFS, exFAT, ext3, ext4
RAID levels0, 1, 5, 6, 10, F1, JBOD
Supported storage drive interfacesSerial ATA II, Serial ATA III
Storage drive sizes supported2.5,3.5"
Processor
Processor manufacturerIntel
Processor threads16
Processor cache12 MB
Processor boost frequency2.7 GHz
CPU configuration (max)1
Conflict-Free processorYes
Processor frequency2.1 GHz
Processor familyIntel® Xeon® D
Processor modelD-1541
Processor cores8
Memory
Internal memory typeDDR4
Internal memory8 GB
Memory clock speed2666 MHz
Maximum RAM supported64 GB
Memory slots4
Memory form factorUDIMM
ECCYes
Network
Link aggregationYes
Ethernet LAN data rate supported (max)10000 Mbit/s
Ethernet LANYes
Ethernet LAN data rates10,100,1000,10000 Mbit/s
Wake-on-LAN readyYes
Supported network protocolsSMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
iSCSI supportYes
Ports & interfaces
USB portYes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
PCI Express x8 (Gen 3.x) slots2
Ethernet LAN (RJ-45) ports6
Hard drive
RAID supportYes
Supported file systemsBTRFS, Fat, HFS+, NTFS, exFAT, ext3, ext4
RAID levels0, 1, 5, 6, 10, F1, JBOD
Design
Cooling typeActive
Fan diameter8 cm
Product colourBlack
Number of fans4 fan(s)
LED indicatorsYes
Chassis typeRack (2U)
Technical details
TypeNAS
Device classSmall & Medium Business
Backup functionYes
Backup featuresCloud, iSCSI LUN
Product colourBlack
Noise level50.2 dB
Multilingual supportYes
LED indicatorsYes
Chassis typeRack (2U)
Number of fans4 fan(s)
Sustainability complianceYes
Compliance certificatesRoHS, Federal Communications Commission (FCC), CCC, CE
Performance
Built-in FTP serverYes
System logYes
Share folderCIFS/AFP/NFS/FTP/WebDAV
Password authenticationYes
Hot spareYes
Browser supportedChrome, Firefox, Edge, Internet Explorer, Safari
TypeNAS
Device classSmall & Medium Business
Backup functionYes
Backup featuresCloud, iSCSI LUN
On/off switchYes
Windows operating systems supportedYes
Mac operating systems supportedYes
Web-based managementYes
Security algorithmsHTTPS, SSH, SSL/TLS
Reset buttonYes
Operating system installedDiskStation Manager
Noise level50.2 dB
Multilingual supportYes
Access Control List (ACL)Yes
Third-party supportYes
SnapshotYes
Cooling
Cooling typeActive
Fan diameter8 cm
Number of fans4 fan(s)
Security
Security algorithmsHTTPS, SSH, SSL/TLS
Access Control List (ACL)Yes
Software
Windows operating systems supportedYes
Mac operating systems supportedYes
Operating system installedDiskStation Manager
Management features
On/off switchYes
Web-based managementYes
Reset buttonYes
Power
Power consumption (HDD standby)72.76 W
Power supply locationBuilt-in
Power supply unit (PSU) capacity500 W
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Redundant power supply (RPS) supportYes
Power consumption (typical)142.5 W
Weight & dimensions
Width482 mm
Depth724 mm
Height88 mm
Packaging content
Cables includedAC
Power cables quantity2
Processor special features
Intel VT-x with Extended Page Tables (EPT)Yes
Intel Virtualization Technology for Directed I/O (VT-d)Yes
Intel Virtualization Technology (VT-x)Yes
Intel TSX-NI version1.00
Intel TSX-NIYes
Intel Trusted Execution TechnologyYes
Intel Secure Key Technology version1.00
Intel Enhanced Halt StateYes
Intel 64Yes
Idle StatesYes
Execute Disable BitYes
Enhanced Intel SpeedStep TechnologyYes
Embedded options availableNo
Sustainability
Sustainability complianceYes
System requirements
Windows operating systems supportedYes
Mac operating systems supportedYes
Operational conditions
Storage temperature (T-T)-20 - 60 °C
Storage relative humidity (H-H)5 - 95%
Operating temperature (T-T)0 - 35 °C
Operating relative humidity (H-H)5 - 95%
Operating altitude0 - 5000 m
Packaging data
Cables includedAC
Other features
Compliance certificatesRoHS, Federal Communications Commission (FCC), CCC, CE

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SKU
RS3621XS+/24T/6X4T
SA3400
SA3600
RS4021XS+
RS1221+/96TB-HAT5300
RS1221+/128TB-HAT5300
Description
Accelerate your business operations
The 12-bay RS3621xs+ is capable of delivering over 238K 4K random read IOPS and 5,819 MB/s sequential read throughput1— a true enterprise powerhouse. With full power supply redundancy, an 8-core processor, ECC memory, advanced snapshot technology, and file self-healing, the RS3621xs+ provides a reliable foundation to any data-driven business.

Storage you can trust
The RS3621xs+ keeps your data protected while you concentrate on delivering the best results to your customers — even when disaster strikes.
Redundant power
Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans allow them to be replaced without powering down the system.
Maximize service availability
Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover.
Next-generation file system
Btrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots.

Tailored to your business
The RS3621xs+ includes two PCIe slots for performance, networking, and storage upgrades enabling it to adapt to any business environment.
Double bandwidth
Upgrade network bandwidth in minutes by 2x or more with Synology’s range of 10GbE NICs.
SSD cache
Boost read/write IOPS by up to 16 times by enabling SSD cache with our Synology M.2 NVMe adapter cards and SNV3500 SSDs or by installing one or more 2.5” SAT5200 SSDs.
Storage expansion
Quickly and easily scale up to 36 drives with two RX1217(RP) expansion units.

License-free data protection
Hyper Backup
A comprehensive backup and recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage used.
Snapshot Replication
Easily schedule flexible point-in-time backups of shared folders and iSCSI LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption.
Active Backup Suite
Enables administrators to easily backup the entire IT infrastructure to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Backups benefit from deduplication, multiversioning, and optimizations to reduce bandwidth and storage used.

Storage for virtualization
Synology iSCSI storage supports mainstream virtualization solutions with an easy management interface to enhance usability. VMware vSphere 6.5 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally, Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments.

Complete surveillance solution
Synology Surveillance Station transforms the RS3621xs+ into a feature-packed Network Video Recorder solution. Support for up to 90 IP cameras and video analytics such as motion detection, no idle zone, foreign object detection, and anomaly detection cater to the most common surveillance scenarios.
Secure and private
AES-256 encryption adds additional security to the locally-stored footage.
Access from anywhere, anytime
Access recordings and live streams whenever you want using a web browser, desktop client, or the DS cam mobile app.
Real-time alerts
Email, SMS, or push notifications alert you when incidents occur or predefined conditions are met.

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

Powered by Synology DiskStation Manager
The RS3621xs+ runs Synology DiskStation Manager (DSM), the web-based operating system with applications and services designed specifically for businesses.
Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Collaboration Suite
Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.
Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.
Security
Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.
Public Cloud Integration
Back up and synchronize data easily between public cloud accounts and your NAS.
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 IOPS. 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.

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 to safeguard your important data on any device with an intuitive user interface and durable storage technologies.

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.
Scalable and Fast Storage Server for Your Growing Business

Synology SA3600 is a 12-bay rackmount NAS designed for large-scale data storage. Its comprehensive data protection solutions, including multi-version backup for server and virtual machines, hybrid cloud integration, and high-availability technology support, make it a reliable server for massive storage deployment. SA3600 is backed by Synology’s 5-year limited warranty.

Expandable Storage with Outstanding Performance

SA3600 is equipped with an Intel® Xeon® D-1567 12-core CPU and 16 GB ECC RDIMM (upgradable to 128 GB) to ensure system performance and data integrity. Offering dual built-in 10GBASE-T Ethernet and dual PCIe 3.0 slots for expansion of 10/25/40GbE network interface cards, SA3600 delivers over 5,561 MB/s sequential throughput via aggregated 10Gb Ethernet.

With the ability to scale up its storage to 180 drives and deliver raw capacity at petabyte scale, SA3600 can easily fulfill the need for video post-production and massive surveillance deployment. Supporting SAS and SATA drives without vendor lock-in, SA3600 provides an elastic and expandable storage solution with optimized total cost of ownership (TCO).

Btrfs: Next Generation Storage Efficiency

SA3600 introduces the Btrfs file system, bringing the most advanced storage technologies to meet the management needs of modern businesses:
- Advanced snapshot technology provides schedulable, near-instantaneous data protection of shared folders and iSCSI LUNs.
- File and folder level data restoration brings huge convenience and saves time for users who wish to restore only a specific file or folder.
- Flexible Shared Folder and User Quota System provide comprehensive quota control on all user accounts and shared folders.
- File self-healing allows Btrfs file system to auto-detect corrupted files with mirrored metadata, and to recover broken data using the supported RAID volumes including RAID1, 5, 6, 10, and RAID F1.

Ultimate Backup Solution

SA3600 integrates various backup applications to safeguard your important data on any device with an intuitive user interface and durable storage technologies.

Workstation/Server/Virtual Machine/SaaS backup: Active Backup for Business centralizes backup tasks for virtual machines, Windows PC, servers, and rsync/SMB file servers and offers various recovery options to ensure lowest RTO. Active Backup for Office 365/G Suite is an on-premises backup solution for public clouds with a centralized dashboard, optimizing storage efficiency through the single instancing and block-level deduplication technology.

NAS backup: Hyper Backup comprehensively backs up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or Synology public cloud service, Synology C2 Backup, to ensure data safety and availability can be achieved when a disaster happens

Computer backup: Synology Drive Client backs up your Windows, Mac, and Linux desktop devices to safeguard important computer files. SA3600 is also compatible with Time Machine, allowing you to effortlessly back up your Mac to Synology NAS.

Effortless Virtualization Deployment

Synology’s Virtual Machine Manager adds boundless capabilities to your NAS. You can set up and run various virtual machines including Windows, Linux, and Virtual DSM on your NAS to test new software versions in a sandbox environment, isolate your customers' machines, and increase the flexibility of your SA3600 with reduced hardware deployment and maintenance costs. Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with a simple management interface. VMware vSphere™ 6.5 and VAAI integration helps offload storage operations and optimizes computational efficiency. While Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rates, the support for OpenStack Cinder transforms your SA3600 into a block-based storage component.
Securing your business assets The 16-bay RS4021xs+ provides solid data security and lightening-fast performance with over 234K 4K random read IOPS and 6,258 MB/s sequential read throughput1. Together with its 8-core processor, ECC memory, advanced snapshot technology, and built-in 10GbE connectivity, the RS4021xs+ can support large multi-user environments while handling data-intensive workloads. Engineered for service continuity The RS4021xs+ ensures mission-critical data is always available, enabling businesses to deliver the best results, even in the face of disaster. Redundant power Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans can be replaced without powering down the system. Maximize service availability Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover. Next-generation file system Btrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots Customize to your business The RS4021xs+ includes two PCIe slots for performance, networking, and storage upgrades enabling it to adapt to any business environment2. Double bandwidth Upgrade network bandwidth in minutes by 2x or more with Synology’s range of 10GbE NICs. SSD cache3 Boost read/write IOPS by up to 16 times by enabling SSD cache with our Synology M.2 NVMe adapter cards and SNV3500 SSDs, or by installing one or more 2.5” SAT5200 SSDs. Storage expansion Quickly and easily scale up to 40 drives with two RX1217(RP) expansion units. Hyper Backup A comprehensive backup and recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication4, integrity checks, and incremental transfer technology reduce bandwidth and storage used. Snapshot Replication Easily schedule flexible point-in-time backups of shared folders and iSCSI LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption. Storage for virtualization Synology iSCSI storage supports mainstream virtualization solutions with an easy management interface to enhance usability. VMware vSphere 6.5 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally, Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments All-in-one surveillance solution Synology Surveillance Station transforms the RS4021xs+ into a feature-packed Network Video Recorder solution. Support for up to 90 IP cameras5 and video analytics such as motion detection, no idle zone, foreign object detection, and anomaly detection cater to the most common surveillance scenarios. Secure and private AES-256 encryption keeps locally-stored footage secure. Access from anywhere, anytime Access recordings and live streams whenever you want using a web browser, desktop client, or the DS cam mobile app. Real-time alerts Email, SMS, or push notifications alert you when incidents occur or predefined conditions are met.
Compact and reliable
The RS1221+/RS1221RP+, at only 30 to 38 centimeters deep, is built for space-sensitive deployments. Boasting over 100K 4K random read IOPS and 2,315 MB/s sequential read, the RS1221+/RS1221RP+ is equipped to handle heavy workloads in data-intensive environments. The RS1221RP+ additionally features an extra level of protection with redundant power supplies.

A compact design for space efficiency
The RS1221+ and its RX418 expansion units are designed to help you save space in compact deployments. At only 30 centimeters, half the length of a typical 2U unit, it fits perfectly snug onto 2-post or shallow rackmount enclosures. The RS1221RP+ with dual power supplies comes in at 38 cm, also fitting most shallow depth enclosures.
- Fits into shallow rackmount enclosures
- Easy-to-install on 2-post racks

Built for reliability
Redundant power
Reduce the chance that power disruptions on a single distribution channel or PDU causes data and service availability degradation.

Maximize service availability
When paired with another identical unit, Synology High Availability enables automatic minute-level failover between two clustered servers in the event of a server failure to minimize service downtime.

Data integrity and protection
ECC memory and the Btrfs file system bring higher reliability and snapshot capabilities to help prevent data corruption and simplify data protection.

High performance storage for anything
Up to 2,315/1,147 MB/s sequential read and write throughput and over 100K/54K random read/write IOPS ensures ample performance for demanding workloads.

With room to grow with you
Easily upgrade the RS1221+/RS1221RP+ to match your usage environment, whether it’s for performance, faster networking, or higher storage capacity.
SSD cache
Boost read/write IOPS over HDD-only arrays by 16X or more with NVMe or SATA SSD Cache
10GbE ready
Improve I/O with faster SFP+ or RJ-45 networking
Storage expansion
Expand to 12 drive bays with a RX418 expansion unit

Data protection solutions, built-in

Hyper Backup
A comprehensive backup and recovery solution for added data protection. Create backup destinations locally, on another Synology device, rsync servers, or cloud-based destinations, such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2 Storage, a dedicated backup destination for Synology devices. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage use.

Snapshot Replication
Easily schedule flexible point-in-time backups of shared folders and LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption.

Protect your entire office with Active Backup
The Active Backup suite enables administrators to easily secure their entire IT infrastructure by backing up mission-critical data to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Benefit from deduplication, multiversioning to quickly jump back in time, and additional data efficiency optimizations for reduced bandwidth and storage use.

Fully certified storage virtualization solutions
Synology iSCSI storage fully supports mainstream virtualization solutions to enhance work efficiency with an easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments.

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

Powered by Synology DiskStation Manager

Synology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.
Surveillance Station
Complete surveillance solution for recording, monitoring, and management.
Collaboration Suite
Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.
Compact and reliable
The RS1221+/RS1221RP+, at only 30 to 38 centimeters deep, is built for space-sensitive deployments. Boasting over 100K 4K random read IOPS and 2,315 MB/s sequential read, the RS1221+/RS1221RP+ is equipped to handle heavy workloads in data-intensive environments. The RS1221RP+ additionally features an extra level of protection with redundant power supplies.

A compact design for space efficiency
The RS1221+ and its RX418 expansion units are designed to help you save space in compact deployments. At only 30 centimeters, half the length of a typical 2U unit, it fits perfectly snug onto 2-post or shallow rackmount enclosures. The RS1221RP+ with dual power supplies comes in at 38 cm, also fitting most shallow depth enclosures.
- Fits into shallow rackmount enclosures
- Easy-to-install on 2-post racks

Built for reliability
Redundant power
Reduce the chance that power disruptions on a single distribution channel or PDU causes data and service availability degradation.

Maximize service availability
When paired with another identical unit, Synology High Availability enables automatic minute-level failover between two clustered servers in the event of a server failure to minimize service downtime.

Data integrity and protection
ECC memory and the Btrfs file system bring higher reliability and snapshot capabilities to help prevent data corruption and simplify data protection.

High performance storage for anything
Up to 2,315/1,147 MB/s sequential read and write throughput and over 100K/54K random read/write IOPS ensures ample performance for demanding workloads.

With room to grow with you
Easily upgrade the RS1221+/RS1221RP+ to match your usage environment, whether it’s for performance, faster networking, or higher storage capacity.
SSD cache
Boost read/write IOPS over HDD-only arrays by 16X or more with NVMe or SATA SSD Cache
10GbE ready
Improve I/O with faster SFP+ or RJ-45 networking
Storage expansion
Expand to 12 drive bays with a RX418 expansion unit

Data protection solutions, built-in

Hyper Backup
A comprehensive backup and recovery solution for added data protection. Create backup destinations locally, on another Synology device, rsync servers, or cloud-based destinations, such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2 Storage, a dedicated backup destination for Synology devices. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage use.

Snapshot Replication
Easily schedule flexible point-in-time backups of shared folders and LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption.

Protect your entire office with Active Backup
The Active Backup suite enables administrators to easily secure their entire IT infrastructure by backing up mission-critical data to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Benefit from deduplication, multiversioning to quickly jump back in time, and additional data efficiency optimizations for reduced bandwidth and storage use.

Fully certified storage virtualization solutions
Synology iSCSI storage fully supports mainstream virtualization solutions to enhance work efficiency with an easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments.

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

Powered by Synology DiskStation Manager

Synology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.
Surveillance Station
Complete surveillance solution for recording, monitoring, and management.
Collaboration Suite
Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.
Short Description
24TB, 2U, Intel Xeon D-1541 (8x 2.1GHz), 8GB DDR4, 12x 2.5"/3.5", 4x 1GbE RJ-45, 2x 10GbE RJ-45, 2x USB 3.2 Gen1
SA3400, Intel Xeon D-1541, 16 GB DDR4, 12x 2.5/3.5" SAS/SATA, 4x 1G RJ-45, 2x 10G RJ-45, 2x USB 3.0, 88x482x724 mm
RackStation SA3600, 12 x 3.5"/2.5" SAS/SATA HDD/SSD, Intel Xeon D-1567 12-core 2.1 GHz, 16 GB DDR4 ECC RDIMM, 10/25/40GbE, PCIe 3.0, USB, 88 x 430.5 x 692 mm
Intel Xeon D-1541, 8-core 2.1 (base) / 2.7 (turbo) GHz, 16 GB DDR4 ECC UDIMM, 16 Drive Bays, 3U
2U, AMD Ryzen V1500B (4x 2.2GHz), 4GB DDR4, 8x 2.5"/3.5" SATA, 4x RJ-45, 2x USB 3.2 Gen 1, 1x eSATA, 250W
2U, AMD Ryzen V1500B (4x 2.2GHz), 4GB DDR4, 8x 2.5"/3.5" SATA, 4x RJ-45, 2x USB 3.2 Gen 1, 1x eSATA, 250W
Manufacturer
Synology
Synology
Synology
Synology
Synology
Synology