FlashStation FS2500

Performance Compatibility Downloads Compare

Business advice

Performance Compatibility Downloads Compare

Business advice

FlashStation FS2500

Cost-effective all-flash storage for small and medium-sized businesses

Features
Specs

Boost your applications with low-latency storage

Download Datasheet

CPU

Quad-core AMD^® Ryzen™

Throughput

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

Form Factor

Rackmount 1U

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.

All the connectivity options you need

Ample built-in and supported networking options ensure that your applications fully benefit from the speed of all-flash arrays and make the FS2500 easy to integrate in any IT environment.

Built-in connectivity

Leverage fast transfer speeds right out of the box and integrate easily with your existing infrastructure with dual 10GbE and dual 1GbE ports.

Support for 25/40GbE

Enable faster networking with 25 or 40GbE network interface cards, thanks to the PCIe 3.0 expansion slot.

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

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

Flash volume deduplication

Remove duplicate data on all-flash arrays with volume-wide deduplication to greatly increase storage efficiency. Eliminate redundant data to save up to 65% in storage space use in applications like virtual desktop infrastructure, and virtual machine.

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.

Synology Virtual Machine Manager (VMM) is a hypervisor for Windows^® and Linux^® VMs or Virtual DSM, a virtualized version of DSM. 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

Enabling effective collaboration

Give your teams reliable tools to collaborate and communicate, wherever they are. Learn more

Synology MailPlus

Set up a private and secure mail server that can be merged with existing IT infrastructure and platforms. Learn more

Synology Office

Collaborate in real time on documents, spreadsheets, and slides for greater synergy and productivity. Learn more

Synology Drive

Host your own private cloud on the safety of your NAS with 100% data ownership and no subscription fees. Learn more

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.

Data Protection

Keep your business safe from data loss and minimize service downtime.

Learn more

User Management

Manage user accounts and devices throughout your business with powerful directory services.

Learn more

Security

Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.

Learn more

File Management

Manage, sync, and share files from multiple devices through a centralized platform.

Learn more

System Administration

Manage the health of your deployments and centrally administer updates with ease.

Learn more

Public Cloud Integration

Back up and synchronize data easily between public cloud accounts and your NAS.

Learn more

Synology has you covered

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

Performance backed by Synology drives

Engineered to handle high-intensity workloads, Synology hard drives consistently deliver top-grade performance.

Enterprise Series 2.5" SATA

Hardware Overview

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

Notes:

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 most up-to-date list of compatible NICs, please check our compatibility list.
Flash volume deduplication is available on flash-only volumes comprised of compatible Synology SSD. Synology measured a data reduction ratio of over 3.15:1 based on 10 VMs configured for remote desktop with two operating systems and enterprise applications installed.
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.
Storage drives are sold separately. Refer to the compatibility list for compatible devices.
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 Core	4
	CPU Architecture	64-bit
	CPU Frequency	3.35 (base) / 3.6 (turbo) GHz
	Hardware Encryption Engine
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	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. 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 about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
Storage
Storage	Drive Bays	12
	Compatible Drive Type* (See all supported drives)	2.5" SATA SSD
	Hot Swappable Drive*
	Notes	Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability. "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
	RJ-45 10GbE LAN Port	2
	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)
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 watts
	Redundant Power Supply
	AC Input Power Voltage	100V to 240V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption	74.83 watts (Access)
	British Thermal Unit	255.17 BTU/hr (Access)
	Notes	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% The power consumption of the NAS model is measured when it is fully loaded with Synology SAT5200-3840G solid-state drives.
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	DDR4 ECC UDIMM: D4EU01-8G/D4EU01-16G Enterprise Series 2.5" SATA SSD: SAT5200 Series 25GbE Network Interface Card: E25G30-F2 10GbE Network Interface Card: E10G21-F2/E10G30-T2/E10G18-T1 Rail Kit Sliding: RKS-01

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 (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
	Global Hot Spare Supported RAID Type	RAID F1 RAID 1 RAID 5 RAID 6 RAID 10
	Notes	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. Volumes over 108 TB require 32 GB of memory or more.
File System
File System	Internal Drives	Btrfs ext4
	External Drives	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
	Notes	exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center.
File Services
File Services	File Protocol	SMB AFP NFS FTP WebDAV Rsync
	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	30
Hyper Backup
Hyper Backup	Data & Folder Backup
	Entire System Backup
	Notes	Full-system backup requires DSM 7.2 or later.
High Availability
High Availability	Synology High Availability
Log Center
Log Center
	Syslog Events per Second	3,000
Virtualization
Virtualization	VMware ESXi 6.5 and VAAI
	Windows Server 2022
	Citrix Ready
	OpenStack
General Specifications
General Specifications	Supported Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, 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 Chat
Synology Chat
	Suggested Users	300
	Notes	Models with expandable memory are tested with their maximum supported memory.
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)
	Suggested Users	5,000
	Maximum Server Performance	3,486,240 emails per day, approx. 102 GB
	Notes	FS series were installed with 12 SSDs in RAID F1 configuration. Suggested users is derived from testing in an environment with 20% heavy users (each with 20,000 pre-populated emails and receiving 240 emails per day) and 80% light users (each receiving an average of 20 emails per day). Learn more Models with expandable memory are tested with their maximum supported memory. 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
	Default Licenses	2 (Additional cameras require purchase of licenses)
	Suggested Maximum IP Cameras and Total FPS (H.264)	720p: 100 channels, 3000 FPS 1080p: 100 channels, 2800 FPS 3M: 100 channels, 1200 FPS 5M: 70 channels, 700 FPS 4K: 50 channels, 500 FPS
	Suggested Maximum IP Cameras and Total FPS (H.265)	720p: 100 channels, 3000 FPS 1080p: 100 channels, 3000 FPS 3M: 100 channels, 2400 FPS 5M: 100 channels, 1300 FPS 4K: 80 channels, 800 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
Synology Drive
Synology Drive
	Recommended Number of Concurrent Sync Clients	900 (the number of connections that can be maintained when the recommended number of hosted files was reached)
	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)
	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. Models with expandable memory are tested with their maximum supported memory. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Synology Office
	Suggested Users	12,500
	Notes	Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more Models with expandable memory are tested with their maximum supported memory. 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:

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.