CPU CPU Model AMD Ryzen V1500B   CPU Architecture 64-bit   CPU Frequency 4-core 2.2 GHz   Hardware Encryption Engine (AES-NI)   Memory System Memory 4 GB DDR4 ECC SODIMM   Memory Module Pre-installed 4 GB (4 GB x 1)   Total Memory Slots 2   Maximum Memory Capacity 32 GB (16 GB x 2)   Notes 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. Synology reserves the right to replace memory modules with the same or higher frequency based on supplier"s product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance. Storage Drive Bays 8   Maximum Drive Bays with Expansion Unit 12 (RX418 x 1)   Compatible Drive Type* (See all supported drives) 3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD   Maximum Single Volume Size* 108 TB   Hot Swappable Drive     Notes "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. Each internal volume (may consist of multiple drives) is expandable up to 108TB. External Ports RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support)   USB 3.2 Gen 1 Port* 2   eSATA Port 1   Notes The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. PCIe PCIe Expansion 1 x Gen3 x8 slot (x4 link) File System Internal Drives Btrfs EXT4   External Drives Btrfs EXT4 EXT3 FAT NTFS HFS+ exFAT*   Notes exFAT Access is purchased separately in Package Center. Appearance Form Factor (RU) 2U   Size (Height x Width x Depth) RS1221+ :88 mm x 482 mm x 306.6 mmRS1221RP+ :88 mm x 482 mm x 407.5 mm   Weight RS1221+ :6.9 kgRS1221RP+ :11.7 kg   Rack Installation Support* RS1221+ : 2-post 19" rack (direct mounting) 4-post 19" rack (Synology Rail Kit - RKM114/RKS1317) RS1221RP+ :4-post 19" rack (Synology Rail Kit - RKS1317)   Notes The rail kit is sold separately Others System Fan 80 mm x 80 mm x 2 pcs   Fan Speed Mode Full-Speed Mode Cool Mode Quiet Mode   Power Recovery     Noise Level* RS1221+ :25.2 dB(A)RS1221RP+ :40 dB(A)   Scheduled Power On / Off     Wake on LAN / WAN     Power Supply Unit / Adapter RS1221+ :250 WRS1221RP+ :350 W   Redundant Power Supply     AC Input Power Voltage 100 V to 240 V AC   Power Frequency 50/60 Hz, Single Phase   Power Consumption* RS1221+ :49.89 W (Access) 22.64 W (HDD Hibernation) RS1221RP+ :61.94 W (Access) 29.98 W (HDD Hibernation)   British Thermal Unit RS1221+ :170.23 BTU/hr (Access) 77.25 BTU/hr (HDD Hibernation) RS1221RP+ :211.35 BTU/hr (Access) 102.30 BTU/hr (HDD Hibernation)   Notes Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s). Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75°C; Humidity: 58.2-61.8% Temperature Operating Temperature 0°C to 35°C (32°F to 95°F)   Storage Temperature -20°C to 60°C (-5°F to 140°F)   Relative Humidity 5% to 95% RH Certification FCC CE BSMI EAC CCC KC VCCI RCM Warranty 3-year hardware warranty, extendable to 5-year coverage - EW202   Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Environment RoHS Compliant Packaging Content RS1221+ : Main Unit X 1 Accessory Pack X 1 AC Power Cord X 1 C13 to C14 power cord x 1 Quick Installation Guide X 1 RS1221RP+ : Main Unit X 1 Accessory Pack X 1 AC Power Cord X 2 Quick Installation Guide X 1 Optional Accessories RS1221+ : DDR4 ECC SODIMM: D4ES01-4G/D4ES01-8G/D4ECSO-2666-16G Expansion Units: RX418 3.5" SATA HDD: HAT5300 2.5" SATA SSD: SAT5200 M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1 M.2 SSD Adapter Card: M2D20 10GbE Network Interface Card: E10G18-T2/E10G18-T1/E10G17-F2 Rail Kit Sliding: RKS1317 Rail Kit Mounted: RKM114* VisualStation: VS960HD/VS360HD Surveillance Device License Pack RS1221RP+ : DDR4 ECC SODIMM: D4ES01-4G/D4ES01-8G/D4ECSO-2666-16G Expansion Units: RX418 3.5" SATA HDD: HAT5300 2.5" SATA SSD: SAT5200 M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1 M.2 SSD Adapter Card: M2D20 10GbE Network Interface Card: E10G18-T2/E10G18-T1/E10G17-F2 Rail Kit Sliding: RKS1317 VisualStation: VS960HD/VS360HD Surveillance Device License Pack   Notes RS1221+ : Certain items may not be available in your location. Please contact your local distributors for more information. All memory modules will operate at the maximum frequency specified by the CPU manufacturer. RS1221RP+ :All memory modules will operate at the maximum frequency specified by the CPU manufacturer.