RackStation® RS2825RP+ RackStation® RS2825RP+
RackStation® RS2825RP+ Reliable storage for data protection, file serving, and more. See why Synology drives are ideal
Features Specs Accessories
Trusted by professionals across all industries.
Synology is a solid storage with great capabilities out of the box. The licensing model of all-inclusive software adds great value to the product.
Information Technology Manager - Government
Synology provides a single-platform solution for all of our backup needs in a cost effective manner.
Director of Enterprise Infrastructure - Education
Synology's DSM is a masterpiece, designed to be user-friendly even for non-IT professionals, helping us become less reliant on out IT teams.
Director Media Services - Media
Working with Synology Products has just been the best. Its an all in one product that can cater for all aspects of Storage.
Senior Systems Engineer - Media
The Synology brand is very feature-rich and unbeatable in terms of price/performance in the NAS segment. Our current testing was primarily focused on backup, which delivered reliability alongside adequate performance.
CEO - IT Services
Smooth storage server setup with intuitive OS and reliable automation features
Server Administrator - Retail
Versatile and scalable storageDownload Datasheet Flexible storage with redundancyOver 3,519/1,790 MB/s seq. read/write , built-in 10GbE, and up to 560 TB raw storage after expansionFlexible configurationAdd 12 extra drive bays, 10/25GbE ports, and SSD cache volumes whenever neededVersatile applicationsBack up endpoints, manage up to 90 IP cameras, or safely sync and share files across sites
Built for reliabilityRedundant powerRedundant power supplies ensure maximum server uptime by preventing single-point power failures.High-availabilityPair two identical devices with Synology High Availability and enable automatic minute-level failover between both devices in the event one server fails. Learn moreNetwork redundancy and load balancingBuilt-in 1x 10GbE and 2x 1GbE ports can be bonded with Link Aggregation to enable automatic network failover and load balancing.
Accommodates future expansionThe RS2825RP+ can be flexibly configured to meet evolving needs through faster networking, local SSD cache, or increased storage.Flexible networking optionsImprove I/O or add redundancy with 10GbE or 25GbE SFP+/SFP28 networking, or 1GbE/10GbE Ethernet (RJ-45) networking.SSD cacheReduce latency and increase IOPS in HDD arrays with the performance boost of SSD caching.Storage expansionExpand to 28 drive bays with one RX1225RP expansion unit.Intuitive storage for on-site and remote teamsProvide secure and convenient cross-platform tile access, sharing, and synchronization across multiple locations.
A secure private cloud solution for enterprise collaborationA private cloud suite for file sharingEmpower your entire organization with streamlined access, sharing, and syncing of data from any location. Establish granular control over file and folder access and sharing permissions. Maintain a comprehensive audit trail of file activities and track changes to file share settings with detailed records. Learn moreMulti-platform supportAccess personal and shared data from mobile apps, desktop clients, web browsers, or another Synology system. Any changes you make are automatically synced to other devices as soon as they are connected.Collaboration in a secure cloudEnhance workplace collaboration with Synology's productivity solutions. Create, edit, and share documents across teams in real time. Host an on-premises mail server to provide web-based email access while maintaining full data ownership. Additionally, stay connected through secure one-on-one chats, public channels, encrypted private channels, and group conversations. Learn more
Efficient multi-site synchronizationCloud-powered multi-site syncingEmpower global workflows with high-speed access to data from anywhere in your network. Our hybrid cloud solution caches frequently used files locally for rapid access, while less frequently accessed data is stored in the cloud, reducing your on-site storage requirements.Learn moreNAS-to-NAS synchronizationAutomate site-to-site data synchronization for better team workflows. Options for one-way or two-way syncing keeps files and folders up-to-date across every data site. Learn moreSync to public cloud providersConnect seamlessly to public cloud services including Amazon S3, BackBlaze B2, Dropbox, Google Cloud Storage, Microsoft Azure, and OpenStack Swift. Multiple protocol support, client-side encryption, and customizable sync and bandwidth controls enable efficient storage management across various platforms. Learn moreComprehensive backup solutionsPC, Mac, Server, VM, and NAS/SAN protectionSecurely back up a wide range of systems including Windows, Mac, and Linux endpoints, VMware® and Hyper-V® virtual machines, and Synology servers. Expand protection to physical servers running Windows or Linux, as well as storage solutions such as Nutanix Files, NetApp ONTAP, and Windows Server with VSS (Volume Shadow Copy Service). Built-in deduplication technology optimizes storage efficiency, while multi-versioning capabilities provide flexible restoration options. Learn moreMicrosoft 365 and Google WorkspaceCentralize backups of Microsoft 365 and Google Workspace data to protect cloud data from accidents and simplify compliance with data retention policies. Schedulable backups, flexible file versioning, and block-level deduplication ensure flexibility and storage and bandwidth savings.Advanced data protection and recoveryEfficient and reliable Synology system backupBack up entire systems or all data, applications, and configurations to a wide range of storage destinations, including Synology C2 Storage. In case of data loss, quickly restore complete systems through bare-metal recovery or retrieve individual files as needed. Advanced features including automated scheduling, granular access controls, end-to-end encryption, data deduplication, and multi-version retention empower you to create the optimal backup plan for your data deployment. Learn moreTamper-proof protection with immutable snapshotsSafeguard critical LUNs and shared folders with automated immutable snapshots backed by custom retention policies. Built-in support for offsite replication further ensures robust business continuity. Learn moreSurveillanceSynology Surveillance StationProtecting your business has never been easier, with centralized management, support for over 8,700 IP camera models, and remote monitoring and playback. Synology’s scalable video management system provides all the tools you need for live monitoring, investigation, management, and backup.Learn moreDual recording to the cloudSecure your surveillance footage with robust cloud backup that supports end-to-end encryption. Our cloud-based surveillance backup solution safeguards your Surveillance Station recordings, allowing you to access, view, share, and download footage through a convenient web portal. Ensure your data remains available even if your on-premises system is compromised.Learn moreCentralized monitoring and managementMonitor and manage your Synology fleet from a central interface, on-prem or in the cloud.Central Management SystemManage Synology servers from a central console using group policies, task delegation, batch updates, and more.Learn moreActive InsightMonitor your global Synology fleet's performance, backup status, login activity, and more with the power of the cloud.Learn more

Performance backed by Synology drives

Designed for Synology systems, Synology drives deliver consistent performance and unmatched reliability for your deployments.

HDD
Enterprise Series 3.5" SATA Plus Series 3.5" SATA
SSD
Enterprise Series 2.5" SATA Enterprise Series M.2 NVMe
Hard drives designed for SynologySee how Synology hard drives deliver reliability, consistent performance, and simplified system management through deep hardware-software integration.Watch video
Extra protection with Extended Warranty PlusAdd an additional two years to your standard three-year limited hardware warranty and gain access to premium services that accelerate recovery in the event of a disaster. Learn more
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Find out why

Hardware Overview

productRS2825RPplusfront view photo
productRS2825RPplusback view photo
  • 1Power button and indicator
  • 2Status indicator
  • 3Alert indicator
  • 4Alarm silence button
  • 5Drive status indicator
  • 6Drive trays
  • 7Rail kit release tabs
  • 8PSU fans
  • 9Power ports
  • 10PSU indicators
  • 11Console port
  • 121GbE RJ-45 ports
  • 1310GbE RJ-45 port
  • 14USB 3.2 Gen 1 ports
  • 15Expansion port
  • 16Reset button
  • 17PCI Express expansion slot
  • First Product Image
  • Second Product Image
  • Third Product Image
  • Fourth Product Image
  • Fifth Product Image
  • Sixth Product Image
Get in touchWhere to buyLearn moreAsk SynologyLearn moreNotes:Gartner® and Peer Insights™ are trademarks of Gartner, Inc. and/or its affiliates. All rights reserved. Gartner Peer Insights content consists of the opinions of individual end users based on their own experiences, and should not be construed as statements of fact, nor do they represent the views of Gartner or its affiliates. Gartner does not endorse any vendor, product or service depicted in this content nor makes any warranties, expressed or implied, with respect to this content, about its accuracy or completeness, including any warranties of merchantability or fitness for a particular purpose.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.Raw capacity calculated using 20 TB drives. Usable storage capacity may vary depending on drives used and RAID configuration. RS2825RP+ supports up to 28 drives with a Synology RX1225RP Expansion Unit, sold separately.Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.This figure represents the recommended number of IP cameras operating at 1080p.For the most up-to-date list of compatible PCIe add-in cards (sold separately), please check our compatibility list.SSD cache can be enabled by using Synology Enterprise Series 2.5" SATA SSDs in drive bays or without occupying drive bays by installing Synology Enterprise Series M.2 NVMe SSDs using M2D20 or E10M20-T1 adapter cards, sold separately.Five MailPlus email accounts are included. Additional email accounts can be added with the purchase of Synology MailPlus License Packs. Learn more.C2 Storage for Hyper Backup and Hybrid Share requires purchase of an eligible annual or monthly subscription. A free trial is available for each newly registered account. Learn moreSurveillance Station includes two free licenses. Connecting more cameras and devices requires additional licenses. Learn more.C2 Backup for Surveillance requires purchase of an eligible annual subscription. Each additional channel requires a separate subscription. A free trial is available.Synology Active Insight includes three free licenses. Additional licenses can be added with the purchase of an annual subscription.Extended Warranty Plus must be purchased within 90 days of the device purchase date or, if none is available, 180 days of the device manufacturing date. A Synology Account is required for the purchase. The starting date of Extended Warranty Plus additional coverage is calculated based on the purchase date of your Synology NAS. If you cannot provide proof of purchase, the device manufacturing date applies.Premium services including express shipping is a paid add-on available in select countries only.
Hardware Specs Software Specs
Hardware Specifications
CPU
CPU
 CPU Model AMD Ryzen V1780B
CPU Quantity 1
CPU Cores 4
CPU Threads 8
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
Total Memory Slots 2
Maximum Memory Capacity 32 GB (16 GB x 2)
Notes
  • Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and 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 multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
Storage
Storage
 Drive Bays 16
Maximum Drive Bays with Expansion Unit 28 (RX1225RP x 1)
Drive Type (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
Notes Compatible drives are mandatory. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.
External Ports
External Ports
 RJ-45 1GbE LAN Port 2
RJ-45 10GbE LAN Port 1
USB 3.2 Gen 1 Port 2
Expansion Port 1
Expansion Port Type Mini-SAS HD
Notes This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
PCIe
PCIe
 PCIe Expansion 1 x Gen3 x8 slot (x4 link)
Appearance
Appearance
 Form Factor (RU) 3U
Size (Height x Width x Depth) 132.3 mm x 482 mm x 656.5 mm
Weight 17.3 kg
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS-02)
Notes The rail kit is sold separately
Others
Others
 System Fan 80 mm x 80 mm x 3 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level* 49.6 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 550 watts
Redundant Power Supply
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption 134.48 watts (Access)
50.81 watts (HDD Hibernation)
British Thermal Unit 459.17 BTU/hr (Access)
173.49 BTU/hr (HDD Hibernation)
Notes
  • For more information on how power consumption is measured, refer to this article.
  • Noise testing was conducted with the Synology system fully installed with Synology SATA SSDs and in an idle state. Two G.R.A.S. type 40AE microphones were placed at a 1 m distance from the front and rear of the device. 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)
Operating Humidity 8% to 80% RH
Storage Humidity 5% to 95% RH
Certification
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • UL
Warranty
Warranty
 3-year hardware warranty, extendable to 5 years with EW202 or Extended Warranty Plus
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • Extended Warranty Plus is only available in Europe and North America. EW201/EW202 is only available in Asia, Africa, and Oceania. For exact availability information please visit their respective websites.
Environment
Environment
 RoHS Compliant
Packaging Content
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
Optional Accessories
Optional Accessories
Notes For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
DSM Specifications
Storage Management
Storage Management
 Maximum Single Volume Size
  • 200 TB (32 GB memory required)
  • 108 TB
Maximum Internal Volume Number 32
SSD Read/Write Cache (Determining cache size)
SSD TRIM
Supported RAID Type
  • Synology Hybrid RAID
  • 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
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Notes
  • Volumes over 108 TB require 32 GB of memory or more.
  • Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
  • 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.
File System
File System
 Internal Drives
  • Btrfs
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
File Services
File Services
 File Protocol
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Number of SMB Connections (FSCT-Based) 560
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Notes
  • Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration:
    • Test workload: HomeFolder scenario provided by the FSCT tool
    • Test duration: 600 seconds
    • Domain controller & FSCT controller: Windows Server 2022
    • FSCT clients: 8 × Windows 10 machines
    • SMB feature: Directory leasing enabled
Account & Shared Folder
Account & Shared Folder
 Maximum Local User Accounts 1,024
Maximum Local Groups 256
Maximum Shared Folder 256
Maximum Shared Folder Sync Tasks 12
Hybrid Share
Hybrid Share
 Maximum Hybrid Share Folders 10
Hyper Backup
Hyper Backup
 Folder and Package Backup
Entire System Backup
High Availability
High Availability
 Synology High Availability
Log Center
Log Center
 Syslog Events per Second 1,000
Virtualization
Virtualization
 VMware vSphere ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5
Microsoft Hyper-V Windows Server 2022
Citrix XenServer XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
OpenStack Cinder
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 AI Console
Synology AI Console
 Third-Party AI Model Integration
Maximum De-Identification Rate 500 words per second
Notes
  • De-identification performance measurement: Filters for Credit Card Numbers, IBAN, Individual Taxpayer Identification Number, SSN, and Names applied to a 4,355-word English text.
  • To enable de-identification, your device must have at least 8 GB of memory and Container Manager installed.
Synology Chat
Synology Chat
 Maximum Number of Users 300
Notes
  • Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds.
  • Models with expandable memory are tested with the maximum supported quantity installed.
Download Station
Download Station
 Maximum Concurrent Download Tasks 80
SAN Manager
SAN Manager
 Maximum iSCSI Target Number 64
Maximum LUN 128
LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server
Synology MailPlus / MailPlus Server
 Free Email Accounts 5 (Additional accounts require purchase of licenses)
Maximum Number of Users 1,100
Notes
  • The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users receiving 20 emails per day. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements.
  • Operating in high-availability mode will incur additional overhead.
  • Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).
Media Server
Media Server
 DLNA Compliance
Synology Photos
Synology Photos
 Facial Recognition
Object Recognition
Snapshot Replication
Snapshot Replication
 Maximum Snapshots per Shared Folder 256
Maximum Snapshots per LUN 64
Maximum Snapshots per System 4,096
Maximum Replication Tasks for Shared Folders 32
Maximum Replication Tasks for LUNs 16
Maximum Replication Tasks per System 32
Surveillance Station
Surveillance Station
 Default Licenses 2 (Additional cameras require purchase of licenses)
Maximum IP Cameras and Total FPS (H.264)
  • 1080p: 90 channels, 2250 FPS
  • 3M: 90 channels, 1500 FPS
  • 5M: 90 channels, 900 FPS
  • 4K: 55 channels, 550 FPS
Maximum IP Cameras and Total FPS (H.265)
  • 1080p: 90 channels, 2700 FPS
  • 3M: 90 channels, 2250 FPS
  • 5M: 90 channels, 1500 FPS
  • 4K: 90 channels, 1080 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 number of video channels that can be viewed simultaneously is double the maximum number of cameras for the same codec and resolution.
Synology Drive
Synology Drive
 Maximum Number of Users 1,000
Maximum Number of Hosted Files 15,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Notes
  • The suggested maximum number of users is based on the following workload: 20% of users randomly perform file operations (upload, download, move, and delete), and 80% of users are logged in but idle. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Synology Office
 Maximum Number of Users 900
Notes
  • The suggested maximum number of users is based on the following workload: 20% of users are executing random actions at an average of 30-second intervals, and 80% of users are logged in and viewing a file. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity 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 12
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.
Compatible Synology Accessories
RX1225RP
3.5" SATA HDD
Plus Series
  • HAT3300-2T
  • HAT3300-4T
  • HAT3300-6T
  • HAT3320-8T
  • HAT3310-12T
  • HAT3310-16T
Enterprise Series
  • HAT5320-4T
  • HAT5320-8T
  • HAT5300-12T
  • HAT5300-16T
  • HAT5310-20T
  • HAT5320-24T
2.5" SATA SSD
Enterprise Series
  • SAT5221-480G
  • SAT5221-960G
  • SAT5221-1920G
  • SAT5221-3840G
  • SAT5210-7000G
M.2 NVMe SSD
Enterprise Series
  • SNV3410-400G
  • SNV5420-400G
  • SNV5420-800G
  • SNV5420-1600G
  • M2D20
  • E25G30-F2
  • E10M20-T1
  • E10G30-T2
  • E10G30-F2
  • E10G18-T1
  • D4EU02-8G
  • D4EU02-16G
RKS-02
RX1225RP
3.5" SATA HDD
Plus Series
  • HAT3300-2T
  • HAT3300-4T
  • HAT3300-6T
  • HAT3320-8T
  • HAT3310-12T
  • HAT3310-16T
Enterprise Series
  • HAT5320-4T
  • HAT5320-8T
  • HAT5300-12T
  • HAT5300-16T
  • HAT5310-20T
  • HAT5320-24T
2.5" SATA SSD
Enterprise Series
  • SAT5221-480G
  • SAT5221-960G
  • SAT5221-1920G
  • SAT5221-3840G
  • SAT5210-7000G
M.2 NVMe SSD
Enterprise Series
  • SNV3410-400G
  • SNV5420-400G
  • SNV5420-800G
  • SNV5420-1600G
  • M2D20
  • E25G30-F2
  • E10M20-T1
  • E10G30-T2
  • E10G30-F2
  • E10G18-T1
  • D4EU02-8G
  • D4EU02-16G
RKS-02
Notes: For more information about drive firmware, EOL accessories, etc, see Synology Product Compatibility list.