Synology DS1821+ DiskStation DS1821+ 8-bay.4 x DS1821+

Designed for scalability and performance
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.

A powerhouse on all fronts
The DS1821+ can handle demanding application workloads and a greater number of concurrent users. Experience faster file indexing in Synology Drive, photo organization in Moments, and more responsive web services.

Turbocharge and supersize it
Upgrade your DS1821+ to match your data requirements, whether it is for faster networking or for higher storage capacity.

Ultimate file management and sharing
File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operations without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and file sharing. For complete compatibility, DS1821+ supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.

Fully certified storage virtualization solutions
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.

Ultimate Backup Solution
DS1821+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.

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

Certificates



Certification



RoHS FCC CE BSMI EAC CCC KC VCCI RCM


Design



Cable lock slot



Yes


Cable lock slot type



Kensington


Chassis type



Tower


Cooling type



Active


Fan diameter



12 cm


Fan diameter 2



12 cm


LED indicators



Y, Yes


Number of fans



2 fan(s)


Product colour



Black


Logistics data



Harmonized System (HS) code



84714100


Memory



ECC



Yes


Internal memory



4 GB


Internal memory type



DDR4


Maximum RAM supported



32 GB


Memory form factor



SO-DIMM


Memory slots



2


Network



Ethernet LAN



Yes


Ethernet LAN data rates



1000


iSCSI support



Yes


Link aggregation



Yes


Supported network protocols



SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV


Wake-on-LAN ready



Yes


Operational conditions



Operating relative humidity (H-H)



5 - 95 %


Operating temperature (T-T)



0 - 40 �C


Storage temperature (T-T)



-20 - 60 �C


Package dimensions



Depth (package,cm)



46.5 cm


Gross Weight (Package, kg)



8.46 kg


Height (package,cm)



30.5 cm


Width (package,cm)



37 cm


Packaging content



Cables included



AC, LAN (RJ-45)


Performance



Access Control List (ACL)



Yes


Backup features



Cloud, iSCSI LUN


Backup function



Yes


Browser supported



Google Chrome, Firefox, Microsoft Edge, Internet Explorer 10+, Safari 10+


Device class



Large Enterprise Business


Hot spare



Yes


Multilingual support



Yes


Noise level



22.2 dB


Number of users



2048 user(s)


On/off switch



Yes


Reset button



Yes


Snapshot



Yes


System log



Yes


Type



NAS


Web-based management



Yes


Ports & interfaces



eSATA ports quantity



2


Ethernet LAN (RJ-45) ports



4


PCI Express x8 (Gen 3.x) slots



1


USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity



4


USB port



Yes


Power



AC input frequency



50 - 60 Hz


AC input voltage



100-240 V


Number of power supply units



1


Power consumption (HDD standby)



26.18 Watt


Power consumption (typical)



59.8 Watt


Power supply location



Built-in


Power supply unit (PSU) capacity



250 Watt


Processor



On-board graphics card model



Not available


Processor cores



4


Processor family



AMD Ryzen


Processor frequency



2.2 GHz


Processor manufacturer



AMD


Processor model



V1500B


Product dimensions



Net Weight (Product, kg)



6 kg


Product Depth



24.3 cm


Product Height



16.6 cm


Product Width



34.3 cm


Software



Operating system installed



DiskStation Manager


Server operating systems supported



Windows Server 2016, Windows Server 2019


Storage



Hot-swap drive bays



Yes


Installed storage drive type



No


Maximum supported storage capacity



108 TB


Number of M.2 (M & B) slots



2


Number of storage drives supported



8


Online RAID expansion



Yes


Online RAID migration



Yes


RAID levels



0, 1, 5, 6, 10, JBOD


RAID support



Yes


Storage drive sizes supported



2.5, 3.5, M.2


Storage drives installed



No


Supported file systems



BTRFS, Fat, HFS+, NTFS, ext3, ext4


Supported storage drive interfaces



M.2, Serial ATA


Supported storage drive types



HDD & SSD


Technical details



Harmonized System (HS) code



84714100


Vendor information



Brand Name


Synology


Warranty



3 Year(s)