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SSD cache
Boost read/write IOPS over HDD-only arrays by 16X or more with NVMe or SATA SSD Cache4
Synology RS1221+ 8-Bay 2U Rackmount NAS
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Synology RS1221+ 8-Bay 2U Rackmount NAS [AMD Ryzen V1500B Quad-Core, 4GB DDR4 ECC SODIMM, 8 x 2.5″/3.5″ SATA HDD/SSD, Up to 12-Bay w/ RX418 x 1, 4 x GbE RJ45, 2 x USB3.2 Gen1, 1 x PCIe Gen3 x8 Slot, 1 x eSATA, Compatible w/ HAT3300 / HAT5300 HDD & SAT5210 SSD]
RackStation RS1221RP+/RS1221+
A powerful storage solution for businesses and IT enthusiasts with redundancy and service continuity features.
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 read1, 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.
Compute
AMD Ryzen™ V1500B quad-core 2.2 GHz
Throughput
2,300 MB/s seq. read 100K 4K random read IOPS1
Memory
4 GB ECC DDR4 Up to 32 GB
Compact
30cm 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.2
- Fits into shallow rackmount enclosures
- Easy-to-install on 2-post racks
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
High performance storage for anything
Up 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.1
4KB Random IOPS Sequential Throughput
Read
285 %
faster
Write
117 %
faster
Read
0 %
faster
Write
0 %
faster
Data protection solutions, built-in
Hyper Backup
A 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 Replication
Easily 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
Works best with Synology drives
Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.
Powered by Synology DiskStation Manager
Synology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.
Surveillance
Protect your home or business with intelligent monitoring and video management tools.
Collaboration Suite
Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.
We have you covered
RS1221RP+/RS1221+ 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. Learn more
- 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
Notes:
- 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 more
- NVMe 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
Hardware Specifications | RS1221RP+ | RS1221+ | |
|---|---|---|---|
| CPU | CPU Model | AMD Ryzen V1500B | AMD Ryzen V1500B |
| CPU Quantity | 1 | 1 | |
| CPU Architecture | 64-bit | 64-bit | |
| CPU Frequency | 4-core 2.2 GHz | 4-core 2.2 GHz | |
| Hardware Encryption Engine | |||
| Memory | System Memory | 4 GB DDR4 ECC SODIMM | 4 GB DDR4 ECC SODIMM |
| Memory Module Pre-installed | 4 GB (4 GB x 1) | 4 GB (4 GB x 1) | |
| Total Memory Slots | 2 | 2 | |
| Maximum Memory Capacity | 32 GB (16 GB x 2) | 32 GB (16 GB x 2) | |
| Notes |
| ||
| Storage | Drive Bays | 8 | 8 |
| Maximum Drive Bays with Expansion Unit | 12 (RX418 x 1) | 12 (RX418 x 1) | |
| Compatible Drive Type* (See all supported drives) |
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| Hot Swappable Drive* | |||
| Notes | “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 | RJ-45 1GbE LAN Port | 4 (with Link Aggregation / Failover support) | 4 (with Link Aggregation / Failover support) |
| USB 3.2 Gen 1 Port* | 2 | 2 | |
| eSATA Port | 1 | 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 | 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) | ||
| 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 |
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| |
| 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 W | 250 W | |
| 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 W (Access) 29.98 W (HDD Hibernation) | 49.89 W (Access) 22.64 W (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 |
| ||
| 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) | |
| Relative Humidity | 5% to 95% RH | 5% to 95% RH | |
| Certification |
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| |
| 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 |
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| |
| Environment | RoHS Compliant | RoHS Compliant | |
| Packaging Content |
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| Optional Accessories |
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| Notes |
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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 |
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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 |
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| File System | 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. | ||
| File Services | File Protocol |
|
|
| Maximum Concurrent SMB/AFP/FTP Connections | 1,000 | 1,000 | |
| Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) | 2,000 | 2,000 | |
| Windows Access Control List (ACL) Integration | |||
| NFS Kerberos Authentication | |||
| Notes |
| ||
| Account & Shared Folder | Maximum Local User Accounts | 2,048 | 2,048 |
| Maximum Local Groups | 256 | 256 | |
| Maximum Shared Folder | 512 | 512 | |
| Maximum Shared Folder Sync Tasks | 16 | 16 | |
| 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 ESXi 6.5 and VAAI | ||
| Windows Server 2016 | |||
| Windows Server 2019 | |||
| Windows Server 2022 | |||
| Citrix Ready | |||
| OpenStack | |||
| 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 |
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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, 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. | ||
Add-on Packages view the complete package list | |||
| Antivirus by McAfee (Trial) | |||
| Central Management System | |||
| Synology Chat | |||
| Suggested Maximum Users | 1,500 | 1,500 | |
| Suggested Concurrent Users | 150 | 150 | |
| Notes | When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections. | ||
| Download Station | |||
| Maximum Concurrent Download Tasks | 80 | 80 | |
| SAN Manager | |||
| Maximum iSCSI Target Number | 128 | 128 | |
| Maximum LUN | 256 | 256 | |
| LUN Clone/Snapshot, Windows ODX | |||
| Notes | iSCSI Manager has been renamed to SAN Manager in DSM 7.0. | ||
| Synology MailPlus / MailPlus Server | |||
| Free Email Accounts | 5 (Additional accounts require purchase of licenses) | 5 (Additional accounts require purchase of licenses) | |
| Suggested Maximum Users | 750 | 750 | |
| Suggested Concurrent Users | 150 | 150 | |
| Maximum Server Performance | 1,484,000 emails per day, approx. 45GB | 1,484,000 emails per day, approx. 45GB | |
| Notes |
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| Media Server | |||
| DLNA Compliance | |||
| Synology Photos | |||
| Facial Recognition | |||
| Object Recognition | |||
| Snapshot Replication | |||
| Maximum Snapshots per Shared Folder | 1,024 | 1,024 | |
| Maximum of System Snapshots | 65,536 | 65,536 | |
| Surveillance Station | |||
| Default Licenses | 2 (Additional cameras require purchase of licenses) | 2 (Additional cameras require purchase of licenses) | |
| Suggested Maximum IP Cameras and Total FPS (H.264) |
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| Suggested Maximum IP Cameras and Total FPS (H.265) |
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| Notes |
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| Synology Drive | |||
| Recommended Number of Concurrent Sync Clients | 550 (the number of connections that can be maintained when the recommended number of hosted files was reached) | 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 Synology Drive. For file access through other standard protocols, refer to the File Services section above) | 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 |
| ||
| Synology Office | |||
| Suggested Maximum Users | 4,500 | 4,500 | |
| Suggested Concurrent Users | 1,800 | 1,800 | |
| Notes |
| ||
| Video Station | |||
| 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 | 40 | 40 | |
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