RackStation RS1221RP+​/​RS1221+

RackStation RS1221RP+​/​RS1221+

A powerful storage solution for businesses and IT enthusiasts with redundancy and service continuity features.

Product Image RS1221plus
Product Image RS1221plus
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
Compact and reliable The RS1221RP+/RS1221+, at only 30 to 38 centimeters deep, is built for space-sensitive deployments. Boasting over 100K 4K random read IOPS and 2,315 MB/s sequential read, the RS1221RP+/RS1221+ is equipped to handle heavy workloads in data-intensive environments. The RS1221RP+ additionally features an extra level of protection with redundant power supplies. Download Datasheet ComputeAMD Ryzen™ V1500B quad-core 2.2 GHzThroughput2,300 MB/s seq. read 100K 4K random read IOPSMemory4 GB ECC DDR4 Up to 32 GBCompact30cm depth (38cm for RP model)

A compact design for space efficiency

The RS1221+ and its RX418 expansion units are designed to help you save space in compact deployments. At only 30 centimeters, half the length of a typical 2U unit, it fits perfectly snug onto 2-post or shallow rackmount enclosures. The RS1221RP+ with dual power supplies comes in at 38 cm, also fitting most shallow depth enclosures.

  • Fits into shallow rackmount enclosures
  • Easy-to-install on 2-post racks
A compact design for space efficiency

Built for reliability

Redundant power

Reduce the chance that power disruptions on a single distribution channel or PDU causes data and service availability degradation.

Maximize service availability

When paired with another identical unit, Synology High Availability enables automatic minute-level failover between two clustered servers in the event of a server failure to minimize service downtime.Learn more

Data integrity and protection

ECC memory and the Btrfs file system bring higher reliability and snapshot capabilities to help prevent data corruption and simplify data protection.Learn more

Built for reliability
High performance storage for anythingUp to 2,315/1,147 MB/s sequential read and write throughput and over 100K/54K random read/write IOPS ensures ample performance for demanding workloads.
4KB Random IOPS Sequential Throughput
The RS1221+ features 285% faster random 4K IOPS reads and 117% faster random 4K IOPS writes compared to its predecessor
The RS1221+ features 62% faster sequential reads and 137% faster sequential writes compared to its predecessor
With room to grow with youEasily upgrade the RS1221RP+/RS1221+ to match your usage environment, whether it’s for performance, faster networking, or higher storage capacity.SSD cacheBoost read/write IOPS over HDD-only arrays by 16X or more with NVMe or SATA SSD Cache10GbE readyImprove I/O with faster SFP+ or RJ-45 networkingStorage expansionExpand to 12 drive bays with a RX418 expansion unitData protection solutions, built-in
Maximize data availabilityHyper BackupA comprehensive backup and recovery solution for added data protection. Create backup destinations locally, on another Synology device, rsync servers, or cloud-based destinations, such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2 Storage, a dedicated backup destination for Synology devices. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage use. Learn more Snapshot ReplicationEasily schedule flexible point-in-time backups of shared folders and 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. Learn more
Protect your entire IT infrastructureProtect your entire office with Active BackupThe Active Backup suite enables administrators to easily secure their entire IT infrastructure by backing up mission-critical data to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Benefit from deduplication, multiversioning to quickly jump back in time, and additional data efficiency optimizations for reduced bandwidth and storage use. Learn more

Works best with Synology drives

Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.

HDD
Enterprise Series 3.5" SATA Plus Series 3.5" SATA
SSD
Enterprise Series 2.5" SATA Enterprise Series M.2 NVMe

RackStation RS1221RP+​/​RS1221+

Synology High Availability

Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.

Learn more

Virtual Machine Manager

Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.

Learn more

Synology Drive

Instantly access your NAS files across multiple devices whenever you want, wherever you are.

Learn more

Central Management System

Conveniently manage your fleet of Synology NAS from a centralized console.

Learn more

Surveillance

Protect your home or business with intelligent monitoring and video management tools.

Learn more

Collaboration Suite

Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.

Learn more

Extra protection with Extended Warranty Plus

Extend the standard 3-year hardware warranty of your RS1221RP+/RS1221+ with 2 more years of Synology-certified support and premium services that help you recover faster in the event of disaster.

Learn more
Hardware Overview RS1221RP+ RS1221+
  • 1Power indicator
  • 2Power button
  • 3Alert Off Button
  • 4Status indicator
  • 5Alert indicator
  • 6Drive status indicator
  • 7Drive tray
  • 8System fan
  • 9PCIe expansion slot
  • 10Reset button
  • 11USB 3.2 Gen 1 port
  • 121GbE RJ-45 port
  • 13Expansion port
  • 14Console port
  • 15Power port
  • 16PSU Indicators & Alert Off Buttons
  • First Product Image
  • Second Product Image
  • Third Product Image
  • Fourth Product Image
  • Fifth Product Image
  • Sixth Product Image
  • 1Power indicator
  • 2Power button
  • 3Alert Off Button
  • 4Status indicator
  • 5Alert indicator
  • 6Drive status indicator
  • 7Drive tray
  • 8System fan
  • 9PCIe expansion slot
  • 10Reset button
  • 11USB 3.2 Gen 1 port
  • 121GbE RJ-45 port
  • 13Expansion port
  • 14Console port
  • 15Power port
  • First Product Image
  • Second Product Image
  • Third Product Image
  • Fourth Product Image
  • Fifth Product Image
  • Sixth Product Image
Notes: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 testing conducted by Synology with 10GbE NIC installed. Actual results may vary depending on system configuration, testing methods, and other environmental variables. Check the performance page for additional details.Compared to typical 2U rackmount chassis depth of 24" (61cm) or more. Actual fit will may depend on cabinet design, including usable space, cable routing, weight tolerance, and more. Synology is unable to provide guidance on compatibility with specific rackmount equipment.Network adapter cards, expansion units, other PCIe add-in-cards, and storage drives are sold separately. Refer to the compatibility list for compatible devices. Learn moreNVMe SSD cache can be enabled via a M2D20 or E10M20-T1 PCIe expansion card and 2x Synology SNV3400/3500 M.2 NVMe SSDs. Read/write SATA SSD cache can be enabled via 2x Synology SAT5200 2.5" SATA SSDs.
Hardware Specs Software Specs
Hardware Specs
Hardware Specifications
RS1221RP+
RS1221+
CPU
CPU Model AMD Ryzen V1500B AMD Ryzen V1500B
CPU Quantity 1 1
CPU Core 4 4
CPU Architecture 64-bit 64-bit
CPU Frequency 2.2 GHz 2.2 GHz
Hardware Encryption Engine
Memory
System Memory 4 GB DDR4 ECC SODIMM 4 GB DDR4 ECC SODIMM
Total Memory Slots 2 2
Maximum Memory Capacity 32 GB (16 GB x 2) 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.
  • 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
Drive Bays 8 8
Maximum Drive Bays with Expansion Unit 12 (RX418 x 1) 12 (RX418 x 1)
Drive Type (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
External Ports
RJ-45 1GbE LAN Port 4 4
USB 3.2 Gen 1 Port 2 2
Expansion Port 1 1
Expansion Port Type eSATA eSATA
PCIe
PCIe Expansion 1 x Gen3 x8 slot (x4 link) 1 x Gen3 x8 slot (x4 link)
Appearance
Form Factor (RU) 2U 2U
Size (Height x Width x Depth) 88 mm x 482 mm x 407.5 mm 88 mm x 482 mm x 306.6 mm
Weight 8.4 kg 6.9 kg
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS-02)
  • 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
  • 2-post 19" rack (direct mounting)
Notes
 The rail kit is sold separately The rail kit is sold separately
Others
System Fan 80 mm x 80 mm x 2 pcs 80 mm x 80 mm x 2 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Power Recovery
Noise Level* 53.5 dB(A) 37.8 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 350 watts 250 watts
Redundant Power Supply -
AC Input Power Voltage 100 V to 240 V AC 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase 50/60 Hz, Single Phase
Power Consumption 61.94 watts (Access)
29.98 watts (HDD Hibernation) 		49.89 watts (Access)
22.64 watts (HDD Hibernation)
British Thermal Unit 211.35 BTU/hr (Access)
102.30 BTU/hr (HDD Hibernation) 		170.23 BTU/hr (Access)
77.25 BTU/hr (HDD Hibernation)
Notes
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX 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%
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX 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) 0°C to 35°C (32°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F) -20°C to 60°C (-5°F to 140°F)
Operating Humidity 8% to 80% RH 8% to 80% RH
Storage Humidity 5% to 95% RH 5% to 95% RH
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
Warranty
3-year hardware warranty, extendable to 5 years with EW202 or Extended Warranty Plus 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.
  • 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
RoHS Compliant RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • C13 to C14 power cord X 1
  • Quick Installation Guide X 1
Optional Accessories
Notes
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
Hardware Specs
Hardware Specifications
RS1221RP+
RS1221+
CPU CPU Model AMD Ryzen V1500B AMD Ryzen V1500B
CPU Quantity 1 1
CPU Core 4 4
CPU Architecture 64-bit 64-bit
CPU Frequency 2.2 GHz 2.2 GHz
Hardware Encryption Engine
Memory System Memory 4 GB DDR4 ECC SODIMM 4 GB DDR4 ECC SODIMM
Total Memory Slots 2 2
Maximum Memory Capacity 32 GB (16 GB x 2) 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 Drive Bays 8 8
Maximum Drive Bays with Expansion Unit 12 (RX418 x 1) 12 (RX418 x 1)
Drive Type (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
External Ports RJ-45 1GbE LAN Port 4 4
USB 3.2 Gen 1 Port 2 2
Expansion Port 1 1
Expansion Port Type eSATA eSATA
PCIe PCIe Expansion 1 x Gen3 x8 slot (x4 link) 1 x Gen3 x8 slot (x4 link)
Appearance Form Factor (RU) 2U 2U
Size (Height x Width x Depth) 88 mm x 482 mm x 407.5 mm 88 mm x 482 mm x 306.6 mm
Weight 8.4 kg 6.9 kg
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS-02)
  • 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
  • 2-post 19" rack (direct mounting)
Notes The rail kit is sold separately
Others System Fan 80 mm x 80 mm x 2 pcs 80 mm x 80 mm x 2 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Power Recovery
Noise Level* 53.5 dB(A) 37.8 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 350 watts 250 watts
Redundant Power Supply -
AC Input Power Voltage 100 V to 240 V AC 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase 50/60 Hz, Single Phase
Power Consumption 61.94 watts (Access)
29.98 watts (HDD Hibernation) 		49.89 watts (Access)
22.64 watts (HDD Hibernation)
British Thermal Unit 211.35 BTU/hr (Access)
102.30 BTU/hr (HDD Hibernation) 		170.23 BTU/hr (Access)
77.25 BTU/hr (HDD Hibernation)
Notes
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX 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) 0°C to 35°C (32°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F) -20°C to 60°C (-5°F to 140°F)
Operating Humidity 8% to 80% RH 8% to 80% RH
Storage Humidity 5% to 95% RH 5% to 95% RH
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
Warranty 3-year hardware warranty, extendable to 5 years with EW202 or Extended Warranty Plus 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 RoHS Compliant RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • C13 to C14 power cord X 1
  • Quick Installation Guide X 1
Optional Accessories
Notes
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
Software Specs
DSM Specifications
RS1221RP+
RS1221+
Maximum Single Volume Size 108 TB 108 TB
Maximum Internal Volume Number 64 64
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
  • 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
  • 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
  • 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
  • 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
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Notes
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • 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.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • 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.
Internal Drives
  • Btrfs
  • ext4
  • Btrfs
  • ext4
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
File Protocol
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Number of SMB Connections (FSCT-Based) 180 180
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
  • 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
Maximum Local User Accounts 1,024 1,024
Maximum Local Groups 256 256
Maximum Shared Folder 256 256
Maximum Shared Folder Sync Tasks 8 8
Maximum Hybrid Share Folders 10 10
Folder and Package Backup
Entire System Backup
Notes
 Full-system backup requires DSM 7.2 or later. Full-system backup requires DSM 7.2 or later.
Synology High Availability
Syslog Events per Second 1,000 1,000
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 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, Windows Server 2019, Windows Server 2016 Windows Server 2022, Windows Server 2019, Windows Server 2016
Citrix XenServer XenServer 8, Citrix Hypervisor 8.2 LTSR CU1 XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
OpenStack Cinder Cinder
Supported Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
  • Chrome
  • Firefox
  • Edge
  • Safari
  • 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 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. For an updated list of supported browser versions, check the DSM Technical Specifications.
Synology AI Console
Third-Party AI Model Integration
Maximum De-Identification Rate 180 words per second 180 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.
  • 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.
Maximum Number of Users 150 150
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.
  • 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
Maximum Concurrent Download Tasks 80 80
Maximum iSCSI Target Number 64 64
Maximum LUN 128 128
LUN Clone/Snapshot, Windows ODX
Free Email Accounts 5 (Additional accounts require purchase of licenses) 5 (Additional accounts require purchase of licenses)
Maximum Number of Users 380 380
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).
  • 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).
DLNA Compliance
Facial Recognition
Object Recognition
Maximum Snapshots per Shared Folder 256 256
Maximum Snapshots per LUN 64 64
Maximum Snapshots per System 4,096 4,096
Maximum Replication Tasks for Shared Folders 32 32
Maximum Replication Tasks for LUNs 16 16
Maximum Replication Tasks per System 32 32
Default Licenses 2 (Additional cameras require purchase of licenses) 2 (Additional cameras require purchase of licenses)
Maximum IP Cameras and Total FPS (H.264)
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
Maximum IP Cameras and Total FPS (H.265)
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 FPS
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 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.
  • 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.
Maximum Number of Users 320 320
Maximum 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) 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)
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.
  • 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.
Maximum Number of Users 320 320
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
  • 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
Recommended Virtual Machine Instances 8 (Learn more) 8 (Learn more)
Recommended Virtual DSM Number (Licenses required) 8 (including 1 Free License) 8 (including 1 Free License)
Notes
 The specifications vary depending on system configuration and memory size. The specifications vary depending on system configuration and memory size.
Maximum Connections 8 8
Software Specs
DSM Specifications
RS1221RP+
RS1221+
Storage Management Maximum Single Volume Size 108 TB 108 TB
Maximum Internal Volume Number 64 64
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
  • 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
  • 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
  • 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
  • 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
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Notes
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • 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 Internal Drives
  • Btrfs
  • ext4
  • Btrfs
  • ext4
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
File Services File Protocol
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Number of SMB Connections (FSCT-Based) 180 180
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 Maximum Local User Accounts 1,024 1,024
Maximum Local Groups 256 256
Maximum Shared Folder 256 256
Maximum Shared Folder Sync Tasks 8 8
Hybrid Share Maximum Hybrid Share Folders 10 10
Hyper Backup Folder and Package Backup
Entire System Backup
Notes Full-system backup requires DSM 7.2 or later.
High Availability Synology High Availability
Log Center Syslog Events per Second 1,000 1,000
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 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, Windows Server 2019, Windows Server 2016 Windows Server 2022, Windows Server 2019, Windows Server 2016
Citrix XenServer XenServer 8, Citrix Hypervisor 8.2 LTSR CU1 XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
OpenStack Cinder Cinder
General Specifications Supported Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
  • Chrome
  • Firefox
  • Edge
  • Safari
  • 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 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.
Central Management System
Synology AI Console Third-Party AI Model Integration
Maximum De-Identification Rate 180 words per second 180 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 Maximum Number of Users 150 150
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 Maximum Concurrent Download Tasks 80 80
SAN Manager Maximum iSCSI Target Number 64 64
Maximum LUN 128 128
LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server Free Email Accounts 5 (Additional accounts require purchase of licenses) 5 (Additional accounts require purchase of licenses)
Maximum Number of Users 380 380
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 DLNA Compliance
Synology Photos Facial Recognition
Object Recognition
Snapshot Replication Maximum Snapshots per Shared Folder 256 256
Maximum Snapshots per LUN 64 64
Maximum Snapshots per System 4,096 4,096
Maximum Replication Tasks for Shared Folders 32 32
Maximum Replication Tasks for LUNs 16 16
Maximum Replication Tasks per System 32 32
Surveillance Station Default Licenses 2 (Additional cameras require purchase of licenses) 2 (Additional cameras require purchase of licenses)
Maximum IP Cameras and Total FPS (H.264)
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
Maximum IP Cameras and Total FPS (H.265)
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 FPS
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 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 Maximum Number of Users 320 320
Maximum 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) 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)
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 Maximum Number of Users 320 320
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 Recommended Virtual Machine Instances 8 (Learn more) 8 (Learn more)
Recommended Virtual DSM Number (Licenses required) 8 (including 1 Free License) 8 (including 1 Free License)
Notes The specifications vary depending on system configuration and memory size.
VPN Server Maximum Connections 8 8