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The 8-bay Synology DS1821+ is aimed at IT enthusiast and SMB customers looking for a powerful and scalable storage solution, its business-grade backup solutions keep users safe and protected from potential data loss, while major improvements to compute capabilities and throughput means workloads are finished faster than ever before.
Reduce transfer times with the DS1821+, designed to accelerate your workloads. Easily add faster networking and NVMe drives to further boost performance.
Make the most of high-performance networking and file access without taking up unnecessary space. DS1821+ comes equipped with 8 bays and can scale up to 18 bays with 2 DX517 expansion units as your data needs grow.
Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.
DS1821+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.
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CPU |
CPU Model |
AMD Ryzen V1500B |
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CPU Quantity |
1 |
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CPU Architecture |
64-bit |
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CPU Frequency |
4-core 2.2 GHz |
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Hardware Encryption Engine (AES-NI) |
Yes | |
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Memory |
System Memory |
4 GB DDR4 ECC SODIMM |
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Memory Module Pre-installed |
4 GB (4 GB x 1) |
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Total Memory Slots |
2 |
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Maximum Memory Capacity |
32 GB (16 GB x 2) |
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Notes |
· Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical 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 more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product. |
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Storage |
Drive Bays |
8 |
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Maximum Drive Bays with Expansion Unit |
18 (DX517 x 2) |
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M.2 Drive Slots |
2 (NVMe) |
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Compatible Drive Type* (See all supported drives) |
· 3.5" SATA HDD · 2.5" SATA HDD · 2.5" SATA SSD · M.2 2280 NVMe SSD |
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Hot Swappable Drive* |
Yes | |
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Notes |
· The hot swappable drive feature is not supported by M.2 SSD slots. · "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. |
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External Ports |
RJ-45 1GbE LAN Port |
4 (with Link Aggregation / Failover support) |
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USB 3.2 Gen 1 Port* |
4 |
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eSATA Port |
2 |
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Notes |
The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. |
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PCIe |
PCIe Expansion |
1 x Gen3 x8 slot (x4 link) |
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Appearance |
Size (Height x Width x Depth) |
166 mm x 343 mm x 243 mm |
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Weight |
6 kg |
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Others |
System Fan |
120 mm x 120 mm x 2 pcs |
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Fan Speed Mode |
· Full-Speed Mode · Cool Mode · Quiet Mode |
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Easy Replacement System Fan |
Yes | |
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Brightness Adjustable Front LED Indicators |
Yes | |
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Power Recovery |
Yes | |
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Noise Level* |
22.2 dB(A) |
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Scheduled Power On / Off |
Yes | |
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Wake on LAN / WAN |
Yes | |
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Power Supply Unit / Adapter |
250 W |
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AC Input Power Voltage |
100V to 240V AC |
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Power Frequency |
50/60 Hz, Single Phase |
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Power Consumption |
59.8 W (Access) |
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British Thermal Unit |
204.05 BTU/hr (Access) |
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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% |
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Temperature |
Operating Temperature |
0°C to 40°C (32°F to 104°F) |
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Storage Temperature |
-20°C to 60°C (-5°F to 140°F) |
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Relative Humidity |
5% to 95% RH |
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Certification |
· FCC · CE · BSMI · EAC · CCC · KC · VCCI · RCM |
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Warranty |
3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus |
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Notes |
The warranty period starts from the purchase date as stated on your purchase receipt. |
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Environment |
RoHS Compliant |
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Packaging Content |
· Main Unit X 1 · Accessory Pack X 1 · AC Power Cord X 1 · RJ-45 LAN Cable X 2 · Quick Installation Guide X 1 |
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Optional Accessories |
· DDR4 ECC SODIMM: D4ES01-4G/D4ES01-8G/D4ECSO-2666-16G · Expansion Units: DX517 · Enterprise Series 3.5" SATA HDD: HAT5300 Series · Plus Series 3.5" SATA HDD: HAT3300 Series · Enterprise Series 2.5" SATA SSD: SAT5200 Series · Enterprise Series M.2 2280 NVMe SSD: SNV3400 Series · 25GbE Network Interface Card: E25G30-F2 · 10GbE Network Interface Card: E10G21-F2/E10G30-T2/E10G18-T1 |
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Notes |
All memory modules will operate at the maximum frequency specified by the CPU manufacturer. |
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DSM Specifications
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|---|---|---|
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Storage Management
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Maximum Single Volume Size | 108 TB |
| Maximum Internal Volume Number | 64 | |
| M.2 SSD Storage Pool Support* | Yes | |
| SSD Read / Write Cache (White Paper) | Yes | |
| SSD TRIM | Yes | |
| 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
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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. | |
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File Services
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File Protocol |
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| 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 | Yes | |
| NFS Kerberos Authentication | Yes | |
| Notes |
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Account & Shared Folder
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Maximum Local User Accounts | 2,048 |
| Maximum Local Groups | 256 | |
| Maximum Shared Folder | 512 | |
| Maximum Shared Folder Sync Tasks | 16 | |
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Hybrid Share
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Maximum Hybrid Share Folders | 10 |
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Hyper Backup
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Folder and Package Backup | Yes |
| Entire System Backup | Yes | |
| Notes | Full-system backup requires DSM 7.2 or later. | |
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High Availability
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Synology High Availability | Yes |
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Log Center
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Syslog Events per Second | 1,000 |
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Virtualization
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VMware ESXi 6.5 and VAAI | Yes |
| Windows Server 2016 | Yes | |
| Windows Server 2019 | Yes | |
| Windows Server 2022 | Yes | |
| Citrix Ready | Yes | |
| OpenStack | Yes | |
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General Specifications
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Supported 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, 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. | |
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Add-on Packages view the complete package list
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Antivirus by McAfee (Trial)
|
Yes | |
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Central Management System
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Yes | |
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Synology Chat
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Suggested Maximum Users | 1,500 |
| Suggested Concurrent Users | 150 | |
| Notes | When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections. | |
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Download Station
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Maximum Concurrent Download Tasks | 80 |
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SAN Manager
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Maximum iSCSI Target Number | 128 |
| Maximum LUN | 256 | |
| LUN Clone/Snapshot, Windows ODX | Yes | |
| Notes | iSCSI Manager has been renamed to SAN Manager in DSM 7.0. | |
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Synology MailPlus / MailPlus Server
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Free Email Accounts | 5 (Additional accounts require purchase of licenses) |
| Suggested Maximum Users | 750 | |
| Suggested Concurrent Users | 150 | |
| Maximum Server Performance | 1,484,000 emails per day, approx. 45GB | |
| Notes |
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Media Server
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DLNA Compliance | Yes |
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Synology Photos
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Facial Recognition | Yes |
| Object Recognition | Yes | |
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Snapshot Replication
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Maximum Snapshots per Shared Folder | 1,024 |
| Maximum of System Snapshots | 65,536 | |
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Surveillance Station
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Default Licenses | 2 (Additional cameras require purchase of licenses) |
| Maximum IP Cameras and Total FPS (H.264) |
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| Maximum IP Cameras and Total FPS (H.265) |
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| Notes |
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Synology Drive
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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 Synology Drive. For file access through other standard protocols, refer to the File Services section above) | |
| Notes |
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Synology Office
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Suggested Maximum Users | 4,500 |
| Suggested Concurrent Users | 1,800 | |
| Notes |
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Video Station
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Virtual Machine Manager
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Recommended Virtual Machine Instances | 8 |
| Recommended Virtual DSM Number (Licenses required) | 8 (including 1 Free License) | |
| Notes | The specifications vary depending on system configuration and memory size. | |
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VPN Server
|
Maximum Connections | 40 |
We offer shipping across all Lebanon, facilitated by our dedicated delivery team servicing the Beirut district and through our partnership with Wakilni for orders beyond Beirut.
Upon placing an order, we provide estimated shipping and delivery dates tailored to your item's availability and selected product options. For precise shipping details, kindly reach out to us through the contact information listed in our Contact Us section.
Please be aware that shipping rates may vary depending on the destination.
We operate a 3-day exchange policy, granting you 3 days from receipt of your item to initiate an exchange.
To qualify for an exchange, your item must remain in its original condition, unworn or unused, with tags intact, and in its original unsealed packaging. Additionally, you will need to provide a receipt or proof of purchase.
To initiate an exchange, please contact us at admin@961souq.com. Upon approval of your exchange request, we will furnish you with an exchange shipping label along with comprehensive instructions for package return. Please note that exchanges initiated without prior authorization will not be accepted.
Should you encounter any damages or issues upon receiving your order, please inspect the item immediately and notify us promptly. We will swiftly address any defects, damages, or incorrect shipments to ensure your satisfaction.
Certain items are exempt from our exchange policy, including perishable goods (such as headsets, earphones, and network card wifi routers), custom-made products (such as special orders or personalized items), and pre-ordered goods. Additionally, we cannot accept exchanges for hazardous materials, flammable liquids, or gases. For queries regarding specific items, please reach out to us.
Unfortunately, we are unable to accommodate exchanges for sale items or gift cards.
The most efficient method to secure the item you desire is to exchange the original item, and upon acceptance of your exchange, proceed with a separate purchase for the desired replacement.
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