Synology FlashStation FS2500 12-Bay NAS Enclosure

The Synology FlashStation FS2500 is a compact, 1U rackmount NAS server purpose-built for all-flash storage. It’s designed to provide a high-performance, low-latency solution for small to medium-sized businesses and enterprise departments that need to accelerate I/O-intensive and latency-sensitive applications like virtualization, databases, and email servers.

Boost your applications with low-latency storage

CPU

Quad-core AMD^® Ryzen

Throughput

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

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.

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

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

Modular components

Automatic failover

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

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.

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.

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.

Flash volume deduplication

Leverage volume-wide deduplication to remove duplicate data on all-flash arrays and greatly increase storage efficiency. Eliminate redundant data to save up to 65% of storage space use in applications like virtual desktop infrastructure and virtual machines.³

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).

Certified storage for VMs and containers

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.

Alternative VM host for testing and recovery

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.

Hardware Specifications Tables

CPU

Attribute	Specification
CPU Model	AMD Ryzen™ V1780B
CPU Quantity	1
CPU Cores	4
CPU Architecture	64-bit
CPU Frequency	3.35 GHz (base) / 3.6 GHz (turbo)
Hardware Encryption Engine	—

Memory

Attribute	Specification
System Memory	8 GB DDR4 ECC UDIMM
Pre-installed Module	8 GB (8 GB × 1)
Total Memory Slots	2
Maximum Memory Capacity	32 GB (16 GB × 2)
Notes	Use Synology-qualified modules for full warranty and stability.

Storage

Attribute	Specification
Drive Bays	12
Supported Drive Type	2.5″ SATA SSD
Hot-swappable Drives	Yes
Notes	Only validated drives guarantee full functionality and reliability.

Network & External Ports

Port Type	Quantity	Notes
RJ-45 1 GbE LAN	2	MTU limit 1500
RJ-45 10 GbE LAN	2
USB 3.2 Gen 1 Type-A	2	Renamed from USB 3.0 in 2019

Expansion

Slot Type	Quantity	Notes
PCIe Expansion	1 × Gen 3 ×8 (x4 link)	For NICs or NVMe cache adapter card
Rack Installation	4-post 19″ (RKS-01)	Rail kit sold separately

Physical & Environmental

Attribute	Specification
Form Factor	1U
Dimensions (H × W × D)	44 mm × 481.9 mm × 555.9 mm
Weight	8.3 kg
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, UKCA, EAC, KC, UL
RoHS Compliance	Yes

Cooling & Noise

Attribute	Specification
System Fans	4 × 40 mm × 40 mm hot-swappable
Fan Speed Modes	Full-Speed, Cool, Quiet
Noise Level	57.6 dB(A)
Notes	Measured idle with Synology SATA SSDs at 1 m distance

Power

Attribute	Specification
Power Supply Unit / Adapter	350 W
Redundant Power Supply	Supported (optional)
AC Input Voltage	100 V to 240 V AC
Power Frequency	50/60 Hz, single phase
Power Consumption (Access)	74.83 W
BTU (Access)	255.17 BTU/hr
Notes	Measured fully loaded per Synology guidelines

Warranty & Packaging

Attribute	Details
Warranty	5 years
Packaging Contents	Main unit ×1, accessory pack ×1, power cords ×2, guide ×1
Optional Accessories	DDR4 ECC UDIMM (4/8/16 GB), SAT5200 SSDs, NICs, rail kit