| Brand |
Synology |
| Model |
ds1821+ |
| Port RJ-45 |
4 x 10/100/1000M |
| Port USB |
4 x USB3.2 Gen 1 |
| Port eSATA |
2 x eSATA |
| HDD Interface |
8 x 3.5" or 2.5" SATA HDD/SSD (drives not included)
2 x M.2 2280 NVMe SSD (drives not included) |
| Form Factor |
8-Bay |
| Processor |
AMD Ryzen V1500B 4-core 2.2 GHz |
| Default/ Max. Memory |
4 GB DDR4 ECC SODIMM / 32 GB Max |
| Included HDD Capacity |
Diskless System |
| Drive Compatibility |
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe SSD |
| RAID |
Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
| Supported Protocols |
SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN, L2TP) |
| Power |
100 V to 240 V AC, 50/60 Hz, single phase |
| Temperature |
Operating: 0°C - 40°C (32°F - 104°F)
Storage: -20°C - 60°C (-5°F - 140°F) |
| Humidity |
5-95% R.H |
| Features |
Up to 110,000 4K random read IOPS and 2300 MB/s sequential write speeds for demanding workloads
Dual M.2 2280 slots for NVMe SSD lets you maximize performance and capacity efficiently
Features 8 bays, supporting both SATA HDD/SSD 2.5" and 3.5" drives and can be expanded by using two Synology DX517 expansion units for a total capacity of 18 bays
Powered by Synology DSM, our unified data management operating system |
| Usage |
High read/write performance with RAID |
| Dimensions |
6.54" x 13.50" x 9.57" |
| Weight |
13.23 lbs. |