Synology RS2421+
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PNP : UAE's TOP Data Storage Integrator Since 2005


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PNP : UAE's TOP Data Storage Integrator Since 2005
Synology RS2421+/RS2421RP+ are versatile 2U 12-bay storage servers designed to accommodate a diverse set of business environments. Scalable up to 24 drives, they are designed for cost-effective file management and sharing and include powerful backup capabilities designed for businesses with a growing data footprint. The unit delivers 2,200 MB/s 64K sequential read and 1154 MB/s sequential write performance , and can be optionally enhanced with SSD cache and 10/25Gb Ethernet .
AMD Ryzen V1500B quad-core 2.2 GHz
2,200 MB/s seq. read and 1154 MB/s seq. write performance
4 GB ECC DDR4, up to 32 GB
Up to 24 drive bays with RX1217(RP)
Over 106K/59K random read/write IOPS and up to 2,200/1,154 MB/s sequential read/write throughput ensure ample performance for demanding workloads.
* compared to predecessor RS2418(RP)+
Read
Write
Read
Write
Reduce the possibility of power disruptions on a single distribution channel or PDU adversely impacting data and service availability.
Pair two identical devices with Synology High Availability and enable automatic minute-level failover between both devices in the event one server fails.
ECC memory brings higher system reliability, while the Btrfs file system helps prevent data corruption, supports snapshot technology, and simplifies data protection.
Easily adapt the RS2421+/RS2421RP+ to any business environment by adding faster networking, local SSD cache, or storage capacity.
Support for 10/25GbE NICs lets you boost maximum network throughput using Link Aggregation (bonding).
Boost read/write IOPS over HDD-only arrays by up to 16 times or more with NVMe or SATA SSD Cache
Expand to 24 drive bays with a expansion unit
Easily adapt the RS2421+/RS2421RP+ to any business environment by adding faster networking, local SSD cache, or storage capacity.
Support for 10/25GbE NICs lets you boost maximum network throughput using Link Aggregation (bonding).
Boost read/write IOPS over HDD-only arrays by up to 16 times or more with NVMe or SATA SSD Cache
Expand to 24 drive bays with a expansion unit
Back up your NAS to other devices
Consolidate backups to your NAS
Back up files, iSCSI LUNs, installed applications, and system configurations to destinations including Synology C2 Storage, public cloud platforms, USB devices, file servers, local folders, or other Synology NAS.
Set and forget backup tasks with regular schedules, enhance security with fine-grained user permissions and encryption, keep backup sizes small with built-in deduplication
, and restore data flexibly with multi-versioning.
Snapshot Replication enables flexible point-in-time snapshots of shared folders and virtual machines with an RPO as low as 5 minutes and recovery within seconds.
Securely back up Windows clients and servers, Microsoft 365 and Google Workspace accounts, file servers, and VMware and Hyper-V virtual machines with the Active Backup Suite.
Leverage built-in deduplication
technology to reduce backup sizes and multi-versioning to allow flexible restoration.
Keep your remote workforce connected with powerful out-of-the-box solutions for collaboration, file sharing, and communication.
Host your own private cloud behind the safety of your NAS with 100% data ownership and no subscription fees.
Create documents, spreadsheets, and slides in a multi-user environment. Real-time collaboration and automatic saving make remote work sessions a breeze.
Discuss and collaborate with colleagues using secure messaging designed for teams, with mobile, desktop, and browser clients.
Keep your remote workforce connected with powerful out-of-the-box solutions for collaboration, file sharing, and communication.
Host your own private cloud behind the safety of your NAS with 100% data ownership and no subscription fees.
Create documents, spreadsheets, and slides in a multi-user environment. Real-time collaboration and automatic saving make remote work sessions a breeze.
Discuss and collaborate with colleagues using secure messaging designed for teams, with mobile, desktop, and browser clients.
DSM streamlines provisioning for and management of virtual machines with full certification for VMware
vSphere
, Microsoft
Hyper-V
, Citrix
XenServer
, and OpenStack virtualization environments.
Synology Storage Console for VMware or Windows platforms lets you manage storage directly from your hypervisor. VMware VAAI integration and Windows ODX help offload storage operations and speed up data transfer.
Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.
The web-based DiskStation Manager (DSM) operating system supports a host of native productivity and management solutions.
Conveniently manage your fleet of Synology NAS from a centralized console.
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.
Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.
Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.
Protect your home or business with intelligent monitoring and video management tools.
RS2421+/RS2421RP+ is backed by Synology's three-year hardware warranty. An optional two-year extended warranty that extends coverage to five years is available in select regions.
Notes:
Hardware Specifications
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CPU
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CPU
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CPU Model | AMD Ryzen V1500B |
CPU Quantity | 1 | |
CPU Architecture | 64-bit | |
CPU Frequency | 4-core 2.2 GHz | |
Hardware Encryption Engine (AES-NI) | ||
Memory
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Memory
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System Memory | 4 GB DDR4 ECC UDIMM |
Memory Module Pre-installed | 4 GB (4 GB x 1) | |
Total Memory Slots | 2 | |
Maximum Memory Capacity | 32 GB (16 GB x 2) | |
Notes |
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Storage
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Storage
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Drive Bays | 12 |
Maximum Drive Bays with Expansion Unit | 24 (RX1217/RX1217RP x 1) | |
Compatible Drive Type* |
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Hot Swappable Drive | ||
Notes |
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External Ports
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External Ports
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RJ-45 1GbE LAN Port | 4 (with Link Aggregation / Failover support) |
USB 3.2 Gen 1 Port* | 2 | |
Expansion Port | 1 | |
Notes | The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. | |
PCIe
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PCIe
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PCIe Expansion | 1 x Gen3 x8 slot (x4 link) |
File System
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File System
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Internal Drives |
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External Drives |
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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. | |
Appearance
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Appearance
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Form Factor (RU) | 2U |
Size (Height x Width x Depth) |
RS2421+ :
88 mm x 482 mm x 552 mm
RS2421RP+ : 88 mm x 482 mm x 578 mm |
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Weight |
RS2421+ :
11.5 kg
RS2421RP+ : 11.9 kg |
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Rack Installation Support* | 4-post 19' rack (Synology Rail Kit - ) | |
Notes | The rail kit is sold separately | |
Others
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Others
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System Fan | 60 mm x 60 mm x 3 pcs |
Fan Speed Mode |
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Easy Replacement System Fan | ||
Power Recovery | ||
Noise Level* |
RS2421+ :
50.1 dB(A)
RS2421RP+ : 54 dB(A) |
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Scheduled Power On / Off | ||
Wake on LAN / WAN | ||
Power Supply Unit / Adapter |
RS2421+ :
500 W
RS2421RP+ : 350 W |
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Redundant Power Supply |
RS2421+ :
-
RS2421RP+ : |
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AC Input Power Voltage | 100 V to 240 V AC | |
Power Frequency | 50/60 Hz, Single Phase | |
Power Consumption* |
RS2421+ :
79.56 W (Access)
34.89 W (HDD Hibernation) RS2421RP+ : 91.76 W (Access) 48.21 W (HDD Hibernation) |
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British Thermal Unit |
RS2421+ :
271.65 BTU/hr (Access)
119.13 BTU/hr (HDD Hibernation) RS2421RP+ : 313.31 BTU/hr (Access) 164.61 BTU/hr (HDD Hibernation) |
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Notes |
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Temperature
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Temperature
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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
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Certification
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Warranty
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Warranty
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3-year hardware warranty, extendable to 5-year coverage - | |
Notes | The warranty period starts from the purchase date as stated on your purchase receipt. | |
Environment
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Environment
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RoHS Compliant | |
Packaging Content
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Packaging Content
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RS2421+ :
RS2421RP+ :
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Notes | All memory modules will operate at the maximum frequency specified by the CPU manufacturer. |
DSM Specifications
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Maximum Single Volume Size* | 108 TB | |
Maximum Internal Volume Number | 64 | |
SSD Read / Write Cache | ||
SSD TRIM | ||
Supported RAID Type |
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RAID Migration |
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Volume Expansion with Larger HDDs |
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Volume Expansion by Adding a HDD |
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Global Hot Spare Supported RAID Type |
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Notes | Each internal volume (may consist of multiple drives) is expandable up to 108TB. | |
File Protocol | SMB/AFP/NFS/FTP/WebDAV | |
Maximum Concurrent SMB/AFP/FTP Connections | 1,000 | |
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) | 2,000 | |
Windows Access Control List (ACL) Integration | ||
NFS Kerberos Authentication | ||
Notes |
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Maximum Local User Accounts | 2,048 | |
Maximum Local Groups | 256 | |
Maximum Shared Folder | 512 | |
Maximum Shared Folder Sync Tasks | 16 | |
Maximum Hybrid Share Folders | 10 | |
Notes | For more details about the maximum number of Hybrid Share folders, check . | |
Synology High Availability | ||
Syslog Events per Second | 1,000 | |
Virtualization
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Virtualization
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VMware vSphere with VAAI | |
Windows Server 2016 | ||
Windows Server 2019 | ||
Citrix Ready | ||
OpenStack | ||
Networking Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV | |
Supported Browsers |
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Supported Language | English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ???????, ???, ???, ????, ???? | |
Notes | For an updated list of supported browser versions, check the . | |
Add-on Packages
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Antivirus by McAfee (Trial)
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Antivirus by McAfee (Trial)
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Maximum Users | 1,500 | |
Notes |
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Document Viewer
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Document Viewer
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Download Station
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Download Station
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Download Station
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Maximum Concurrent Download Tasks | 80 |
Maximum iSCSI Target Number | 128 | |
Maximum LUN | 256 | |
LUN Clone/Snapshot, Windows ODX | ||
Notes | iSCSI Manager has been renamed to SAN Manager in DSM 7.0. | |
Free Email Accounts | 5 | |
Maximum Number of Concurrent Users | 150 | |
Maximum Server Performance | 1,484,000 emails per day, approx. 45GB | |
Notes |
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DLNA Compliance | ||
Facial Recognition | ||
Notes | Photo Station and Synology Moments are succeeded by Synology Photos in DSM 7.0. For a features comparison, check . | |
Maximum Snapshots per Shared Folder | 1,024 | |
Maximum of System Snapshots | 65,536 | |
Maximum IP cam | 40 (including 2 Free License) | |
Total FPS (H.264) |
1200 FPS @ 720p (1280x720)
1050 FPS @ 1080p (1920x1080) 600 FPS @ 3M (2048x1536) 440 FPS @ 5M (2591x1944) 320 FPS @ 4K (3840x2160) |
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Total FPS (H.265) |
1200 FPS @ 720p (1280x720)
1200 FPS @ 1080p (1920x1080) 1120 FPS @ 3M (2048x1536) 600 FPS @ 5M (2591x1944) 480 FPS @ 4K (3840x2160) |
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Notes |
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Recommended Number of Concurrent Sync Clients | 550 (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 . For file access through other standard protocols, refer to the File Services section above) | |
Notes |
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Maximum Users | 1,800 | |
Notes |
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Recommended Virtual Machine Instances | 8 | |
Recommended Virtual DSM Number | 8 (including 1 Free License) | |
Notes | The specifications vary depending on system configuration and memory size. | |
Maximum Connections | 40 |