The Synology DS1821+ is an 8 disk NAS unit.
- 8 x 3.5″ or 2.5″ SATA HDD/SSD (drives not included)
- 2 x M.2 2280 NVMe SSD (drives not included)
- Usage High read/write performance with RAID
- Diskless System
- AMD Ryzen V1500B 4-core 2.2 GHz Processor
- 4 GB DDR4 ECC SODIMM / 32 GB Max
- 4 x 10/100/1000M
- 4 x USB3.2 Gen 1
Synology supports Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
The DS1821+ is an n-2 NAS which can tolerate 2 disk failures. In old servers this is called RAID6. Its advisable to have at least 2 spare hard disks so that the array can be secure during a resilvering operation.
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.
Supporting 32GB of RAM can give the DS1821+ a leg up for handling multiple requests. Installing a large capacity M.2 SSD can markedly improve the read and writes.