Synology RackStation RS4021xs+

Enterprise NAS with built-in service continuity engineered for data-intensive applications

Description

 

Hardware Specifications

CPU Model Intel Xeon D‑1541
CPU Quantity 1
CPU Core 8
CPU Architecture 64‑bit
CPU Frequency 2.1 GHz (base) / up to 2.7 GHz (turbo)
Hardware Encryption Engine Yes (AES‑NI)
System Memory 16 GB DDR4 ECC UDIMM (16 GB × 1)
Total Memory Slots 4
Maximum Memory Capacity 64 GB (16 GB × 4)
Drive Bays 16
Maximum Drive Bays with Expansion Unit 40 (with 2 × RX1217 / RX1217RP)
Drive Type 3.5″ SATA HDD, 2.5″ SATA SSD
Hot Swappable Drive Yes
External Ports USB 3.2 Gen 1 ×2, Expansion Ports ×2 (Infiniband)
LAN Ports RJ‑45 1GbE ×4, RJ‑45 10GbE ×2
PCIe Expansion 2 × Gen3 x8 slots (x8 link)
Form Factor (RU) 3U Rackmount
Dimensions (H × W × D) 132.3 mm × 482 mm × 656.5 mm
Weight 17.4 kg
Rack Installation Support 4‑post 19″ rack (Rail Kit RKS‑02 sold separately)
System Fan 80 mm × 80 mm × 3 pcs
Fan Speed Modes Full‑Speed Mode, Cool Mode, Quiet Mode
Noise Level 44.7 dB(A)
Scheduled Power On/Off Yes
Wake on LAN/WAN Yes
Power Supply Unit 800 W or 550 W (revision dependent), Redundant PSU supported
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption (Access) 145.79 W
Power Consumption (HDD Hibernation) 62.68 W
Operating Temperature 0°C to 35°C (32°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Operating Humidity 8% to 80% RH
Storage Humidity 5% to 95% RH
Certifications FCC, CE, BSMI, VCCI, RCM, EAC, CCC, KC, BIS, UL, RoHS Compliant
Warranty 5 Years
Packaging Content Main Unit ×1, Accessory Pack ×1, AC Power Cord ×2, Quick Installation Guide ×1
Optional Accessories • DDR4 ECC UDIMM: D4EC‑2666‑16G
• Expansion Units: RX1217 / RX1217RP
• Enterprise Series 3.5″ SATA HDD: HAT5300 Series
• Enterprise Series 2.5″ SATA SSD: SAT5200 Series
• M.2 SSD & 10GbE Combo Adapter Card: E10M20‑T1
• M.2 SSD Adapter Card: M2D20
• 25GbE NIC: E25G30‑F2
• 10GbE NICs: E10G30‑F2, E10G30‑T2, E10G18‑T1
• Rail Kit Sliding: RKS‑02

 Software Specifications

Maximum Single Volume Size 1 PB (64 GB memory required for RAID 6 groups only); 200 TB (32 GB memory); 108 TB (default)
Maximum Internal Volume Number 256
SSD Read/Write Cache Supported
SSD TRIM Supported
Supported RAID Types RAID F1, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
File System — Internal Btrfs, ext4
File System — External Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT
File Services & Protocols SMB, AFP, NFS, FTP, WebDAV, Rsync
Maximum SMB Connections 1,500 (FSCT‑based)
Accounts & Sharing Max Local Users: 5,120; Max Local Groups: 512; Max Shared Folders: 512
Hybrid & Cloud Snapshot Replication, Hyper Backup, Active Backup Suite, Hybrid Share
Virtualization Support VMware vSphere, Microsoft Hyper‑V, Citrix XenServer, OpenStack

 

Additional information

Model

RS4021xs+

Form Factor

Num. of Hard drive bay

Series

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