The Synology DS1821+ is equipped with pretty much the exact same connectivity ports as the 6-bay model that is, four RJ-45 1GbE LAN ports, two eSATA ports, and four USB 3.2 Gen 1 ports (one more than the DS1621+). The DS1621+ also can be outfitted with up to 32GB DDR4 ECC SODIMM RAM, though it ships 4GB with the standard build. The above-mentioned performance will slow down a bit when leveraging this technology due to the encryption process. Nonetheless, the DS1821+ is able to reach these numbers due to its AMD Ryzen V1500B 4-core 2.2 GHz 64-bit (also inside the DS1621+), which features Hardware Encryption Engine (AES-NI). These numbers are pretty much on par with the DS1621+ model we reviewed last week. Businesses can also significantly increase the capacity of the DS1821+ using dual DX517 expansion devices, which ups the drive count to 18 for a maximum single volume size of 108TB.Īs far as performance goes, Synology quotes the DS1821+ around 2.3GB/s read and 1.15GB/s write in sequential speeds using (when using optional aggregated 10GbE connectivity), while random speeds are expected to reach up to 113,000 IOPS read and 54,000 IOPS write (when using 10GbE iSCSI). Like others from the line, this 8-bay NAS solution features an AMD Ryzen CPU and two M.2 2280 slots for NVMe Cache, which helps to drive its solid performance. The Synology DiskStation DS1821+ is an 8-bay NAS solution designed for SMBs looking for an effective way to store and protect their data.

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