Synology DiskStation DS1821+ 8-Bay 3.5 Diskless 4xGbE NAS (Tower) , AMD Ryzen Quad Core 2.2GHz,4GB RAM,4xUSB3.2, 2x eSATA, Scalable.3 year Wty
Synology DiskStation DS1821+ is a powerful 8-bay network-attached-storage solution designed to store and protect mission-critical data. Designed to tackle increasing amounts of unstructured data, the low-noise, desktop form-factor of the DS1821+ is built for both SOHO and SMB environments. With performance over 110K or 177% higher, 4K random read IOPS than its predecessor, the DS1821+ is fast, with ample room for scalability. 5-year warranty is available as an optional add-on with EW201, a 2-year warranty extension.

Quad-core, 2.2 GHz CPU
Quad-core, 2.2 GHz CPU
4 GB DDR4 1550 pre-installed, expandable up to 32 GB
4 GB DDR4 1550 pre-installed, expandable up to 32 GB
177% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor
177% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor
Dual M.2 2280 slots for NVMe SSD lets you maximize performance and capacity efficiently
Dual M.2 2280 slots for NVMe SSD lets you maximize performance and capacity efficiently
Four Gigabit LAN ports (RJ-45) with failover and Link Aggregation support
Four Gigabit LAN ports (RJ-45) with failover and Link Aggregation support
Optional 10GbE add-on card provides high-speed data transfer rate
Optional 10GbE add-on card provides high-speed data transfer rate
Scalable up to 18 drives with 2 expansion unit DX517 to meet high capacity demands
Scalable up to 18 drives with 2 expansion unit DX517 to meet high capacity demands
Ready for deploying dynamic virtualization environments includes VMware vSphere, Microsoft Hyper-V,
Ready for deploying dynamic virtualization environments includes VMware vSphere, Microsoft Hyper-V,
Maximum IP camera: 40 (total of 1200 FPS at 720p, H.264) (including two free camera licenses; additional cameras require the purchasing of additional licenses)
Maximum IP camera: 40 (total of 1200 FPS at 720p, H.264) (including two free camera licenses; additional cameras require the purchasing of additional licenses)
PCIe 3.0 slot - 1 x 4-lane x8 slot - 10GbE network interface card support / M.2 NVMe/SATA SSD adapter card support
PCIe 3.0 slot - 1 x 4-lane x8 slot - 10GbE network interface card support / M.2 NVMe/SATA SSD adapter card support
Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10

Unit Measure 46*36*32