Synology RS3621XS+ SAN/NAS Storage System

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. Learn more

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 environment2.

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.


Keep disaster at bay:

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.

Backup your entire IT infrastructure:
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 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 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:
- Secure data with comprehensive built-in security tools to protect your devices against evolving threats.

Public Cloud Integration:
- Back up and synchronize data easily between public cloud accounts and your NAS.
- Power button and indicator
- Alert Off Button
- Drive tray
- Drive status indicator
- Power Port
- PSU Indicators & Alert Off Buttons
- PSU fan
- Console port
- 1GbE/10GbE RJ-45 Ports
- USB 3.2 Ports
- Expansion port
- PCIe expansion slot
- Reset button


Hardware specsspecifications:


CPU:
- CPU Model: Intel Xeon D-1541
- CPU Quantity: 1
- CPU Architecture: 64-bit
- CPU Frequency: 8-core 2.1 (base) / 2.7 (turbo) GHz
- Hardware Encryption Engine (AES-NI): yes

Memory:
- System Memory: 8 GB DDR4 ECC UDIMM
- Memory Module Pre-installed: 8 GB (8 GB x 1)
- Total Memory Slots: 4
- Maximum Memory Capacity: 64 GB (16 GB x 4)
- Notes: 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 more information on the recommended memory configurations, visit here.
- Synology reserves the right to replace memory modules with the same or higher frequency based on supplier´s product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.

Storage:
- Drive Bays: 12
- Maximum Drive Bays with Expansion Unit: 36 (RX1217/RX1217RP x 2)
- Compatible Drive Type* (See all supported drives):
- 3.5´´ SATA HDD
- 2.5´´ SATA SSD
- Maximum Single Volume Size*:
- 200 TB (32 GB memory required)
- 108 TB
- Hot Swappable Drive:
- Notes: yes
- It is strongly recommended that you only install drives listed on your device´s compatibility list. Storage pool and volume creation processes may fail when using unverified drives. Synology is unable to provide technical support for devices using unsupported components.
- Compatible drive type´´ indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
- Each internal volume (may consist of multiple drives) is expandable up to 108 TB (with memory less than 32 GB) or 200 TB (with memory equal to or greater than 32 GB).
- External Ports
- RJ-45 1GbE LAN Port: 4 (with Link Aggregation / Failover support)
- RJ-45 10GbE LAN Port: 2 (with Link Aggregation / Failover support)
- USB 3.2 Gen 1 Port*: 2
- Expansion Port: 2
- Notes: The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.

PCIe:
- PCIe Expansion: 2 x Gen3 x8 slots (x8 link)

File System:
- Internal Drives: yes
- Btrfs
- EXT4
- External Drives: yes
- Btrfs
- EXT4
- EXT3
- FAT
- NTFS
- HFS+
- exFAT*
- Notes: exFAT Access is purchased separately in Package Center.

Appearance:
- Form Factor (RU): 2U
- Size (Height x Width x Depth): 88 mm x 482 mm x 724 mm
- Weight: 14.5 kg
- Rack Installation Support*: 4-post 19´´ rack (Synology Rail Kit - RKS1317)
- Notes: The rail kit is sold separately

Others:
- 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*: 50.2 dB(A)
- Scheduled Power On / Off:
- Wake on LAN / WAN: yes
- Power Supply Unit / Adapter: 500 W
- Redundant Power Supply: yes
- AC Input Power Voltage: 100 V to 240 V AC
- Power Frequency: 50/60 Hz, Single Phase
- Power Consumption*: 142.5 W (Access)
- 72.76 W (HDD Hibernation)
- British Thermal Unit: 485.93 BTU/hr (Access)
- 248.11 BTU/hr (HDD Hibernation)
- Notes: Power consumption is measured when it is fully loaded with Synology 8TB HAT5300-8T hard drive(s).
- Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%

Temperature:
- Operating Temperature: 0°C to 35°C (32°F to 95°F)
- Storage Temperature: -20°C to 60°C (-5°F to 140°F)
- Relative Humidity: 5% to 95% RH

Certification:
- FCC
- CE
- BSMI
- VCCI
- RCM
- EAC
- CCC
- KC
- UL

Environment:
- RoHS Compliant
- Packaging Content
- Main Unit X 1
- Accessory Pack X 1
- AC Power Cord X 2
- Quick Installation Guide X 1
- Optional Accessories
- DDR4 ECC UDIMM: D4EC-2666-8G/D4EC-2666-16G
- Expansion Units: RX1217/RX1217RP
- 3.5´´ SATA HDD: HAT5300
- 2.5´´ SATA SSD: SAT5200
- M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1
- M.2 SSD Adapter Card: M2D20
- 25GbE Network Interface Card: E25G21-F2
- 10GbE Network Interface Card: E10G21-F2/E10G18-T2/E10G18-T1
- Rail Kit Sliding: RKS1317
- VisualStation: VS960HD/VS360HD
- Surveillance Device License Pack

Software Specs:
- Maximum Internal Volume Number: 256

SSD Read / Write Cache (White Paper):
- SSD TRIM: yes
- RAID Group: yes

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

File Services:
- File Protocol: SMB/AFP/NFS/FTP/WebDAV
- Maximum Concurrent SMB/AFP/FTP Connections: 2,000
- Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion): 10,000
- Windows Access Control List (ACL) Integration: yes
- NFS Kerberos Authentication: yes
- Notes: Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
- During testing, the maximum number of SSDs supported by this model is installed in a RAID 5 configuration.
- The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.

Account & Shared Folder:
- Maximum Local User Accounts: 16,000
- Maximum Local Groups: 512
- Maximum Shared Folder: 512
- Maximum Shared Folder Sync Tasks: 32

High Availability:
- Synology High Availability: yes
- Log Center: Syslog Events per Second: 3,000

Virtualization:
- VMware vSphere with VAAI: yes
- Windows Server 2016: yes
- Windows Server 2019: yes
- Citrix Ready: yes
- OpenStack: yes

General Specifications:
- Networking Protocols: SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
- Supported Browsers: Google Chrome
- Firefox
- Microsoft Edge
- Internet Explorer 11 onwards
- Safari 13 onwards
- Safari (iOS 13.0 onwards)
- Google Chrome (Android 11.0 onwards)
- Antivirus by McAfee (Trial): yes
- Central Management System: yes

Synology Chat:
- Maximum Users: 6,000
- Notes: The number of concurrent HTTP connections for Synology Chat was configured to the maximum.
- For tested models with expandable memory, the maximum amount of RAM was installed.
- Document Viewer
- Download Station
- Maximum Concurrent Download Tasks: 80
- exFAT Access (Optional)
- iSCSI Manager
- Maximum iSCSI Target Number: 256
- Maximum iSCSI LUN: 512
- iSCSI LUN Clone/Snapshot, Windows ODX:
- Synology MailPlus / MailPlus Server
- Free Email Accounts: 5 (Licenses required for additional accounts)
- Maximum Number of Concurrent Users: 800
- Maximum Server Performance: 4,235,000 emails per day, approx. 129GB
- Notes: Models with more than 4 bays were installed with two SSDs for SSD cache.
- For tested models with expandable memory, the maximum amount of RAM was installed.
- The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
- Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).

Media Server:
- DLNA Compliance: yes

Moments:
- Facial Recognition: yes
- Subject Recognition: yes
- Auto Color & Rotate: yes
- Moments Select: yes
- Snapshot Replication
- Maximum Snapshots per Shared Folder: 1,024
- Maximum of System Snapshots: 65,536

Surveillance Station:
- Maximum IP cam (Licenses required): 90 (including 2 Free License) (See All Supported IP Cameras)
- Total FPS (H.264): 2700 FPS @ 720p (1280x720)
- 2250 FPS @ 1080p (1920x1080)
- 1500 FPS @ 3M (2048x1536)
- 900 FPS @ 5M (2591x1944)
- 550 FPS @ 4K (3840x2160)
- Total FPS (H.265): 2700 FPS @ 720p (1280x720)
- 2700 FPS @ 1080p (1920x1080)
- 2250 FPS @ 3M (2048x1536)
- 1500 FPS @ 5M (2591x1944)
- 1080 FPS @ 4K (3840x2160)
- Notes: Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera.
- The maximum channel number also includes devices installed on Virtual DSM.
- Total FPS may be affected by other services running at the same time (e.g., archive tasks performed by Archive Vault).

Synology Drive:
- Recommended Number of Hosted Files: 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
- Recommended Number of Concurrent Sync Clients: 2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached)
- Notes: Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
- Utilizing SSD cache can significantly improve performance.
- For tested models with expandable memory, the maximum amount of RAM was installed.
- Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.

Synology Office:
- Maximum Users: 3,000
- Notes: Multiple files were opened for testing and each file was edited by 30 users simultaneously.
- For tested models with expandable memory, the maximum amount of RAM was installed.
- Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM

Video Station:
- Virtual Machine Manager
- Recommended Virtual Machine Instances: 16 (Learn more)
- Recommended Virtual DSM Number (Licenses required): 16 (including 1 Free License)
- Notes: The specifications vary depending on system configuration and memory size.

VPN Server:
- Maximum Connections: 40

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