Synology RS3621RPxs is a powerful 12-bay storage server. Its 6-core processor enables compute-intensive services while its redundant power, ECC memory, and Btrfs file system safeguard mission-critical data. Capable of delivering 189,098 4K random read IOPS and 4,718 MB/s sequential read throughput1, it is ideal for small businesses. CPU Model Intel Xeon D-1531 CPU Architecture 64-bit CPU Frequency 6-core 2.2 (base) / 2.7 (turbo) GHz System Memory 8 GB DDR4 ECC UDIMM Maximum Memory Capacity 64 GB (16 GB x 4) Maximum Drive Bays with Expansion Unit 36 (RX1217/RX1217RP x 2) Compatible Drive Type* (See all supported drives) 3.5' SATA HDD 2.5' SATA SSD Maximum Single Volume Size* 200 TB (32 GB RAM required, for RAID 5 or RAID 6 groups only) 108 TB Hot Swappable Drive RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support) USB 3.2 Gen 1 Port* 2 Expansion Port 2 PCIe Expansion 2 x Gen3 x8 slots (x8 link) Form Factor (RU) 2U Rack Installation Support* 4-post 19' rack (Synology Rail Kit - RKS1317) System Fan 80 mm x 80 mm x 4 pcs Power Supply Unit / Adapter 500 W AC Input Power Voltage 100 V to 240 V AC Redundant Power Supply Operating Temperature 0°C to 35°C (32°F to 95°F) Warranty 5 Years