Description RS4021XS Key Features : 16-bay enterprise rackmount NAS for data centers High-performance architecture for demanding workloads Designed for virtualization and enterprise applications Advanced data protection and RAID support Scalable storage with expansion unit compatibility Reliable 24/7 operation with Synology DSM Hardware Specifications CPU CPU Model Intel Xeon D-1541 CPU Quantity 1 CPU Core 8 CPU Architecture 64-bit CPU Frequency 2.1 (base) / 2.7 (turbo) GHz Hardware Encryption Engine Memory System Memory 16 GB DDR4 ECC UDIMM Total Memory Slots 4 Maximum Memory Capacity 64 GB (16 GB x 4) Notes Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and performance. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion. For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations. Storage Drive Bays 16 Maximum Drive Bays with Expansion Unit 40 (RX1217 x 2) Drive Type (See all supported drives) 3.5″ SATA HDD 2.5″ SATA SSD Hot Swappable Drive* Notes Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability. External Ports RJ-45 1GbE LAN Port 4 RJ-45 10GbE LAN Port 2 USB 3.2 Gen 1 Port 2 Expansion Port 2 Expansion Port Type Infiniband PCIe PCIe Expansion 2 x Gen3 x8 slots (x8 link) 1Power button and indicator 2Alert Off Button 3Drive tray 4Drive status indicator 5PSU fan 6Power Port 7PSU Indicators & Alert Off Buttons 8Console port 91GbE/10GbE RJ-45 Ports 10USB 3.2 Ports 11Expansion port 12PCIe expansion slot 13Reset button Show More Show Less
