Technical Specifications
Hardware
CPU AMD RyzenTM V1500B quad-core 2.2 GHz
Hardware encryption engine Yes (AES-NI)
Memory 4 GB DDR4 ECC SODIMM (expandable up to 32 GB)
Compatible drive type: • 6 x 3.5" or 2.5" SATA HDD/SSD (drives not included)
• 2 x M.2 2280 NVMe SSD (drives not included)
Hot swappable drive Yes
External port • 3 x USB 3.2 Gen 1
• 2 x eSATA
Size (HxWxD) 166 x 282 x 243 mm
Weight 5.1 kg
LAN port 4 x 1GbE RJ-45
Wake on LAN/WAN Yes
PCIe 3.0 slot • 1 x 4-lane x8 slot
• Supports 10GbE network interface cards
Scheduled power on/off Yes
System fan 2 (92 x 92 x 25 mm)
AC input power voltage 100 V to 240 V AC
Power frequency 50/60 Hz, single phase
Operating temperature 0¡ãC to 40¡ãC (32¡ãF to 104¡ãF)
Storage temperature -20¡ãC to 60¡ãC (-5¡ãF to 140¡ãF)
Relative humidity 5% to 95% RH
Maximum operating altitude 5,000 m (16,400 ft)
General DSM specification
Networking protocol SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN™, L2TP)
File system • Internal: Btrfs, ext4
• External: Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT11
Supported RAID type Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
Storage management
• Maximum single volume size: 108TB
• Maximum system snapshots: 65,53612
• Maximum internal volume: 64
SSD cache • Read/write cache support
• M.2 NVMe SSD support
File sharing capability
• Maximum local user account: 2,048
• Maximum local group: 256
• Maximum shared folder: 512
• Maximum concurrent SMB/NFS/AFP/FTP connection: 1,000
Privilege Windows® Access Control List (ACL), application privileges
Directory service Windows® AD integration: Domain users login via SMB/NFS/AFP/FTP/File Station, LDAP integration
Virtualization VMware vSphere® 6.5, Microsoft Hyper-V®, Citrix®, OpenStack®
Security Firewall,shared folder encryption,SMB encryption,FTP over SSL/TLS,SFTP, rsync over SSH, login auto block, Let's Encrypt support, HTTPS (customizable cipher suite)
Supported client Windows® 7 onwards, macOS® 10.12 onwards
Supported browser Chrome®, Firefox®, Edge®, Internet Explorer® 10 onwards, Safari® 10 onwards, Safari (iOS 10 onwards), Chrome (Android™ 6.0 onwards) on tablets
Interface language
English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svensk, Nederlands, §²§å§ã§ã§Ü§Ú, Polski, Magyar,Portugu¨ºs do Brasil, Portugu¨ºs Europeu, T¨¹rkçe, Český,
Packages and Applications
File Server & Synchronization Drive
Provide a universal portal to synchronize your files across various platforms, including Windows®, macOS®, Linux®, Android™ and iOS. The built-in universal portal allows you to access data anytime and anywhere.
• Maximum number of hosted files: 1,000,000
• Maximum number of concurrent connections for PC clients: 550
File Station Virtual drives, remote folders, Windows® ACL editor, compressing/extracting archived files, bandwidth control for specific users/groups, creating sharing links, transfer logs FTP Server Bandwidth control for TCP connections, custom FTP passive port range, anonymous FTP, FTP SSL/TLS and SFTP protocol,boot over the network with TFTP and PXE support, transfer logs
Presto File Server13 High-speed data transfer over WAN with exclusive SITA technology between Synology NAS and desktop
Cloud Sync
One or two-way synchronization with public cloud storage providers including Alibaba Cloud OSS, Amazon S3-compatible storage, Backblaze B2, Baidu Cloud, Box, Dropbox, Google Cloud Storage, Google Drive, hubiC, MegaDisk, Microsoft OneDrive, OpenStack Swift-compatible storage, Tencent COS, WebDAV servers, Yandex Disk
Universal Search Offer global search into applications and files
iSCSI Storage & Virtualization
iSCSI Manager
• Maximum iSCSI target: 128
• Maximum iSCSI LUN: 256
• iSCSI LUN clone/snapshot support
Virtual Machine Manager Deploy and run various virtual machines on Synology NAS, including Windows®, Linux®, or Virtual DSM
Data Protection & Backup Solution
Hyper Backup Support local backup, network backup, and data backup to public clouds
Backup tools DSM configuration backup, macOS® Time Machine® support, Synology Drive Client desktop application
Shared folder sync - maximum task number: 16
Snapshot Replication • Maximum of shared folder snapshots: 1,024
• Maximum of replication: 32
Synology High Availability Reduce service downtime by setting up two identical NAS into one high-availability cluster
Active Backup for G Suite Support G Suite My Drive and Team Drive backup and restoration
Active Backup for Microsoft 365 Supports Microsoft 365 OneDrive for Business, mail, contacts, and calendar backup and restoration
Active Backup for Business All-in-one backup solution designed for heterogeneous business IT environment, enabling IT admins to remotely manage and monitor protection over PC, servers and VM on one centralized console
Productivity & Collaboration
Collaboration tools
Collaborate with instant message service Synology Chat, online editor Synology Office, and scheduling assistant Synology
Calendar
• Chat maximum user: 1,500
• Office maximum user: 1,800
• Calendar: support CalDAV and access via mobile devices
Note Station Rich-text note organization and versioning, encryption, sharing, media embedding and attachments
Synology MailPlus Server Secure, reliable, and private mail solution with high-availability, load balancing, security and filtering design (includes 5 free
email account licenses; additional accounts require the purchasing of additional licenses)
Synology MailPlus Intuitive webmail interface for Synology MailPlus Server, customizable mail labels, filters, and user interface
Multimedia
Moments
Support smart AI album with facial and subject recognition, photo editing and sharing features, similar photo detection, autoediting functions such as color correction and angle adjustments, and AI selection of the best photos. Mobile applications are available on iOS and Android™ devices
Other packages Video Station, Photo Station, Audio Station, iTunes® Server
Surveillance
Surveillance Station Maximum IP camera: 40 (total of 1,200 FPS at 720p, H.264) (Including two free camera licenses. Additional cameras require the purchasing of additional licenses)
All-in-One Server
Synology Directory Server Provide a flexible and cost-effective domain controller solution
Central Management System Provide a single interface to manage and monitor multiple Synology NAS
VPN Server Maximum connection: 30. Supported VPN protocol: PPTP, OpenVPN™, L2TP/IPSec
Mail Server Supported Mail Server protocol: POP3, SMTP, IMAP. LDAP/AD account support
Mail Station Webmail interface for Mail Server to receive emails from multiple POP3 mailboxes, customizable SMTP server
Web Station Virtual host (up to 30 websites), PHP/MariaDB®, 3rd-party applications support
Other packages DNS Server, RADIUS Server, Log Center
Others
Storage Analyzer Volume and quota usage, total size of files, volume usage and trends based on past usage, size of shared folders, large files,most recently modified files, least recently accessed files
Antivirus Essential Full system scan, scheduled scan, white list customization, virus definition auto update iOS/Android™ applications Synology Drive, Synology MailPlus, Synology Chat, Synology LiveCam, Moments, DS audio, DS photo, DS video, DS cam, DS
file, DS finder, DS note
Other packages Additional 3rd-party packages available on Package Center
Environment and Packaging
Environment safety RoHS compliant
Package content
• 1 x DS1621+ main unit
• 1 x Quick Installation Guide
• 1 x Accessory pack
• 1 x AC power cord
• 2 x RJ-45 LAN cable
Optional accessories14
• DDR4 ECC SO-DIMM: D4ES01-4G/D4ES01-8G/D4ECSO-2666-16G
• 10GbE Network Interface Card: E10G18-T2/E10G18-T1/E10G17-F2
• 2.5" SATA SSD: SAT5200
• M.2 2280 NVMe SSD: SNV3400
• Expansion Unit: DX517
• VisualStation: VS960HD/VS360HD
• Surveillance Device License Pack
• MailPlus License Pack
• Virtual DSM License Pack
Warranty 3 years15
*Model specifications are subject to change without notice. Please refer to www.synology.com for the latest information.
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