Synology Disk Station DS1821+ - NAS server - 8 bays - 128 TB - SATA 6Gb/s / eSATA - HDD 16 TB x 8 - RAID RAID 0, 1, 5, 6, 10, JBOD - RAM 4 GB - Gigabit Ethernet - iSCSI support More information: General | Width | 34.3 cm | ![](/p.gif) | Depth | 24.3 cm | ![](/p.gif) | Height | 16.6 cm | ![](/p.gif) | Weight | ) | ![](/p.gif) | Device Type | NAS server | ![](/p.gif) | Built-in Devices | Led panel | ![](/p.gif) | Installed Devices / Modules Qty | 8 (installed) / 8 (max) | ![](/p.gif) | Total Storage Capacity | 128 TB | ![](/p.gif) | Host Connectivity | Gigabit Ethernet | Expansion / Connectivity | Interfaces | 4 x Ethernet 1000Base-T - RJ-45 ¦ 4 x USB 3.2 Gen 1 - Type A ¦ 2 x eSATA | ![](/p.gif) | Expansion Bays | 8 (total) / 0 (free) x hot-swap - 2.5" / 3.5" | ![](/p.gif) | Expansion Slots | 2 (total) / 1 (free) x SO-DIMM 260-pin ¦ 2 (total) / 2 (free) x M.2 2280 ¦ 1 (total) / 1 (free) x PCI Express 3.0 x8 | Manufacturer Warranty | Service & Support | Limited warranty - 3 years | Networking | Features | Firewall protection, hardware encryption, LDAP support, wake on LAN (WOL), manageable, High Availability, web server, backup server, download client, file sharing, Access Control List (ACL) support, RADIUS support, iTunes server, FTP server, e-mail server, reset button, bandwidth control, surveillance station, PXE support, DNS server, DLNA Media Server, Apple Time Machine compatible, cloud backup, VPN Server, Dropbox support, mobile users support, Link Aggregation, Google Drive support, scheduler, failover protection, Yandex Disk support, Microsoft OneDrive support, B-tree file system (Btrfs), file station, hubiC support, OpenStack Swift-compatible, Baidu cloud support, EXT4 file system, iSCSI LUN clone/snapshot, Windows ODX, MailPlus server, Amazon S3 support, Rsync compatible, Alibaba Cloud OSS support, Backblaze B2 support, MegaDisk support, Tencent COS support, wake on WAN (WOW) | ![](/p.gif) | Data Link Protocol | 10Mb LAN, 100Mb LAN, GigE | ![](/p.gif) | Network / Transport Protocol | TCP/IP, PPTP, L2TP, IPSec, iSCSI, SMTP, FTP, DNS, POP3, IMAP, SMB, NFS, SFTP, HTTP, HTTPs | ![](/p.gif) | Compliant Standards | DLNA CERTIFIED | ![](/p.gif) | Remote Management Protocol | SNMP, Telnet, HTTP, HTTPS, TFTP, SSH, SFTP, LDAP, RADIUS | ![](/p.gif) | Encryption Algorithm | SSL, TLS, AES-NI | ![](/p.gif) | Network Services Compatibility | Microsoft Active Directory (AD), DNS, File Level Security (ACLs), Microsoft CIFS, FTP, Server Message Block (SMB), Apple File Protocol (AFP), HTTP, HTTPS, Web-based Distributed Authoring and Versioning (WebDAV), Calendaring Extensions to WebDAV (CalDAV), SFTP, Server Message Block 2.0 (SMB 2.0), Server Message Block 3.0 (SMB 3.0), Network File System v3 (NFS v3), Network File System v4 (NFS v4), Network File System v4.1 (NFS v4.1) | Miscellaneous | Features | Security lock slot (cable lock sold separately), wake on LAN, built-in 2 cooling fans, hardware encryption, scheduled power on/off, Hybrid RAID, VPN support, built-in firewall, reset button, lockable tray | ![](/p.gif) | Compliant Standards | VCCI, BSMI, CCC, FCC, RoHS, KC, EAC, RCM | ![](/p.gif) | Cables Included | 2 x network cable | ![](/p.gif) | Included Accessories | Accessory pack, 2 x drive tray keys | ![](/p.gif) | Security Slot Type | Kensington security slot | Power | Power Device | Internal power supply | ![](/p.gif) | Voltage Required | AC 100-240 V (50/60 Hz) | ![](/p.gif) | Power Provided | 250 Watt | Software / System Requirements | Software Included | McAfee AntiVirus (Trial) | ![](/p.gif) | OS Required | Microsoft Windows 7 or later, Apple macOS 10.12 or later | ![](/p.gif) | Storage Operating System | Synology DiskStation Manager | Environmental Parameters | Min Operating Temperature | 0 °C | ![](/p.gif) | Max Operating Temperature | 40 °C | ![](/p.gif) | Humidity Range Operating | 5 - 95% RH | Storage Controller | Type | RAID | ![](/p.gif) | Interface Type | SATA 6Gb/s / eSATA | ![](/p.gif) | RAID Level | RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD | Hard Drive | Type | HDD - hot-swap - 3.5" | ![](/p.gif) | Interface Type | SATA 6Gb/s | ![](/p.gif) | Capacity | 8 x 16 TB | ![](/p.gif) | Spindle Speed | 7200 rpm | ![](/p.gif) | Manufacturer | Synology | Processor / Memory | Features | ECC | ![](/p.gif) | Max Supported Qty | 1 | ![](/p.gif) | RAM | 4 GB (installed) / 32 GB (supported) - DDR4 | ![](/p.gif) | Processors Installed | 1 x AMD Ryzen Embedded V1500B 2.2 GHz | ![](/p.gif) | Number of Cores | Quad-Core | Security DVR | Image Resolution | 1280x720, 1920x1080, 2048x1536, 2591x1944, 3840x2160 | ![](/p.gif) | Compression Format | MJPEG, H.264, H.265 | ![](/p.gif) | IP Cameras Supported | 40 |
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