Synology RackStation RS2421+ 12 Bay NAS Synology RS2821RP+ is a 3U 16-bay storage server designed to accommodate a diverse set of business requirements. Scalable to 28 drives, the unit provides powerful backup and restoration functionality for the SMB sector. It delivers 2,200 MB/s sequential read and 105K 4K random read performance1, and can be upgraded with SSD cache and 10/25Gb Ethernet2 options. CPU Model AMD Ryzen V1500B CPU Quantity 1 CPU Architecture 64-bit CPU Frequency 4-core 2.2 GHz Hardware Encryption Engine (AES-NI) ystem Memory 4 GB DDR4 ECC UDIMM Memory Module Pre-installed 4 GB (4 GB x 1) Total Memory Slots 2 Maximum Memory Capacity 32 GB (16 GB x 2) Maximum Drive Bays with Expansion Unit 28 (RX1217/RX1217RP x 1) Compatible Drive Type* (See all supported drives) 3.5' SATA HDD 2.5' SATA HDD 2.5' SATA SSD Hot Swappable Drive RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support) USB 3.2 Gen 1 Port* 2 Expansion Port 1 PCIe Expansion 1 x Gen3 x8 slot (x4 link) Form Factor (RU) 3U Rack Installation Support* 4-post 19' rack (Synology Rail Kit - RKS-02) System Fan 80 mm x 80 mm x 3 pcs Scheduled Power On / Off Wake on LAN / WAN Power Supply Unit / Adapter 550 W Redundant Power Supply AC Input Power Voltage 100 V to 240 V AC Power Frequency 50/60 Hz, Single Phase Operating Temperature 0°C to 35°C (32°F to 95°F) 3-year hardware warranty, extendable to 5-year coverage - EW202