CPU

CPU

Quad-core AMD® Ryzen™

Throughput

Throughput

Up to 172,552/82,917 4K random read/write IOPS1

Form Factor

Form Factor

Rackmount 1U

Networking

Networking

Built-in dual 10GbE and dual Gigabit Ethernet ports

Dependable storage for many scenarios

Synology NAS is a versatile storage platform that fits perfectly in file server, block storage, or light application server roles that require high availability, reliability, and leading-edge storage technology.

Simple and efficient SAN storage

Choose certified block storage that fits into any environment from day one, with a short learning curve, easy management plugins, free snapshots, and built-in high availability options.

Fast and secure SMB file sharing

Get great shared file storage that makes permission management a breeze, with powerful RAID options, reliable SMB file serving, efficient backup tools, and easy maintenance.

Business application platform

Host cost-efficient business solutions, including a powerful free backup server, a versatile mail server, lightweight directory server, or surveillance server with transparent licensing.

Built to boost service continuity

The FS2500 protects data and services through robust hardware and software safeguards, ensuring access to your digital assets even in the face of disaster.


Redundancy first

Dual power supply

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

Modular components

The FS2500 also comes with hot-swappable fans and system trays for easy replacement in case of malfunction.

Automatic failover

Network ports supporting automatic failover eliminate single points of hardware failure, ensuring stable operation at all times.

Dual power supply
Modular components
Automatic failover

Availability and protection

Synology High Availability (SHA)

Enable automatic minute-level failover by pairing up two FS2500 units to create a high-availability cluster, minimizing service downtime in the event of a server failure. Learn more

Snapshot Replication

Create point-in-time snapshots of LUNs and shared folders with an RPO as low as 5 minutes, with support for granular version control. Learn more

Hyper Backup

Back up files, LUNs, applications, and system configurations on your NAS to other Synology NAS, Synology C2 Storage, public cloud platforms, USB devices, file servers, or local folders. Learn more

Availability and protection

Complete virtualization platform

Deploy the FS2500 as fast and efficient VM storage and benefit from free native hosting, management, and protection tools in Synology DiskStation Manager (DSM).

Deploy and facilitate storage operations in various virtualization environments with full certification for VMware® vSphere™, Microsoft® Hyper-V®, Citrix® XenServer™, and OpenStack, and a Kubernetes CSI driver for integrated volume management.

VM and container storage on all-flash arrays can benefit from volume-wide data deduplication, a technology that removes identical data to optimize storage use.3

vmware
windows2016
citrix
openstack

Synology Virtual Machine Manager (VMM) is a hypervisor for Windows® and Linux® VMs or Virtual DSM, a virtualized version of DSM.4 Use your Synology device as an alternative host for VMs to quickly recover services following failure or run failover copies of PCs, servers, and VMs created with Active Backup for Business (ABB), DSM’s data protection tool for physical and virtual environments. Learn more

Alternative VM host for testing and recovery

Manage storage directly from your hypervisor with Synology Storage Console for VMware® or Windows platforms, provision volumes directly from the Kubernetes CLI, and offload storage operations and speed up data transfer through VMware® VAAI integration and Windows ODX. Learn more

Streamlined configuration and administration

Get more with DiskStation Manager

Take advantage of a whole host of native productivity, management, and security solutions available on the web-based Synology DSM operating system.

Synology has you covered

Synology has you covered

The FS2500 is backed by Synology's 5-year limited warranty,5 including technical support and hardware replacement services to maximize your return on investment and ensure continued high-quality performance. Learn more

Synology Replacement Service (SRS)

Synology Replacement Service (SRS)

SRS provides free advance replacement units as early as the next business day in selected regions, maximizing the service uptime for your mission-critical storage and ensuring your business continuity. Learn more

FlashStation FS2500

product FS2500 front view photo
product FS2500 back view photo
  • 1Power button and indicator
  • 2Status indicator
  • 3Alert indicator
  • 4Beep off button
  • 5Drive status indicator
  • 6Drive tray
  • 7Power port
  • 8PCI Express Expansion Slot
  • 9PSU Indicators and Beep Off Buttons
  • 10PSU Fans
  • 111GbE RJ-45 port
  • 1210GbE RJ-45 port
  • 13Console port
  • 14USB 3.2 Gen 1 port
  • 15Reset button

More ways to harness your NAS

Notes:

  1. 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.

  2. For the most up-to-date list of compatible NICs, please check our compatibility list.

  3. Data deduplication is only available on select models and only for Btrfs volumes built on Synology SSDs. Visit this page for more information.

  4. Certain advanced features require Virtual Machine Manager Pro. One Virtual DSM license is included. Additional Virtual DSM instances require the purchase of Virtual DSM Licenses.

  5. The warranty period starts from the date of purchase as stated on your purchase receipt. Visit https://www.synology.com/company/legal/warranty for more information.

Hardware Specifications

CPU

CPU

CPU Model AMD Ryzen V1780B
CPU Quantity 1
CPU Architecture 64-bit
CPU Frequency 4-core 3.35 (base) / 3.6 (turbo) GHz
Hardware Encryption Engine (AES-NI)

Memory

Memory

System Memory 8 GB DDR4 ECC UDIMM
Memory Module Pre-installed 8 GB (8 GB x 1)
Total Memory Slots 2
Maximum Memory Capacity 32 GB (16 GB x 2)
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

Storage

Drive Bays 12
Compatible Drive Type* (See all supported drives) 2.5" SATA SSD
Hot Swappable Drive
Notes
  • 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.

External Ports

External Ports

RJ-45 1GbE LAN Port* 2 (with Link Aggregation / Failover support)
RJ-45 10GbE LAN Port 2 (with Link Aggregation / Failover support)
USB 3.2 Gen 1 Port* 2
Notes
  • This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
  • The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.

PCIe

PCIe

PCIe Expansion 1 x Gen3 x8 slot (x4 link)

File System

File System

Internal Drives
  • Btrfs
  • EXT4
External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT

Appearance

Appearance

Form Factor (RU) 1U
Size (Height x Width x Depth) 44 mm x 481.9 mm x 555.9 mm
Weight 8.3 kg
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS-01)
Notes The rail kit is sold separately

Others

Others

System Fan 40 mm x 40 mm x 4 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level* 57.6 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 350 W
Redundant Power Supply
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 74.83 W (Access)
British Thermal Unit 255.17 BTU/hr (Access)
Notes
  • The power consumption of the NAS model is measured when it is fully loaded with Synology SAT5200-3840G solid-state drives.
  • Noise Level Testing Environment: A Synology NAS loaded with Synology 480GB SAT5200-480G solid-state drive(s) in idle state. Each G.R.A.S. type 40AE microphone is placed at a 1-meter distance from the front and rear of a Synology NAS. 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)
Relative Humidity 5% to 95% RH

Certification

Certification

  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • KC
  • UL

Warranty

Warranty

5 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

Environment

Environment

RoHS Compliant

Packaging Content

Packaging Content

  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1

Optional Accessories

Optional Accessories

Notes All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

DSM Specifications

Storage Management

Storage Management

Maximum Single Volume Size*
  • 200 TB (32 GB memory required)
  • 108 TB
Maximum Internal Volume Number 256
SSD Read / Write Cache (White Paper)
SSD TRIM
RAID Group
Supported RAID Type
  • RAID F1
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
  • RAID F1
  • JBOD
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Notes 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).

File Services

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) 8,000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
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

Account & Shared Folder

Maximum Local User Accounts 16,000
Maximum Local Groups 512
Maximum Shared Folder 512
Maximum Shared Folder Sync Tasks 32

Hybrid Share

Hybrid Share

Hybrid Share Folder Number 8
Notes For more supported details, please check this article.

High Availability

High Availability

Synology High Availability

Log Center

Log Center

Syslog Events per Second 3,000

Virtualization

Virtualization

VMware vSphere with VAAI
Windows Server 2016
Windows Server 2019
Citrix Ready
OpenStack

General Specifications

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
  • 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

Antivirus by McAfee (Trial)

Antivirus by McAfee (Trial)

Central Management System

Central Management System

Synology Chat

Synology Chat

Maximum Users 4,000
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.

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 (Licenses required for additional accounts)
Maximum Number of Concurrent Users 300
Maximum Server Performance 3,486,240 emails per day, approx. 102 GB
Notes
  • FS series were installed with 12 SSDs in RAID F1 configuration.
  • 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).

Snapshot Replication

Snapshot Replication

Maximum Snapshots per Shared Folder 1,024
Maximum of System Snapshots 65,536

Surveillance Station

Surveillance Station

Maximum IP cam (Licenses required) 100 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264) 3000 FPS @ 720p (1280x720)
2800 FPS @ 1080p (1920x1080)
1200 FPS @ 3M (2048x1536)
700 FPS @ 5M (2591x1944)
500 FPS @ 4K (3840x2160)
Total FPS (H.265) 3000 FPS @ 720p (1280x720)
3000 FPS @ 1080p (1920x1080)
2400 FPS @ 3M (2048x1536)
1300 FPS @ 5M (2591x1944)
800 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

Synology Drive

Recommended Number of Hosted Files 50,000,000 (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 900 (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

Synology Office

Maximum Users 2,900
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

Virtual Machine Manager

Virtual Machine Manager

Recommended Virtual Machine Instances 8 (Learn more)
Recommended Virtual DSM Number (Licenses required) 8 (including 1 Free License)
Notes The specifications vary depending on system configuration and memory size.

VPN Server

VPN Server

Maximum Connections 60

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 our regional partners for professional advice.