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H3C S9855-G Series 400G 200G High-Density Lossless Data Center Switches for AI Compute Spine Backbone
Overview
High-performance data center switches designed for AI and high-performance computing environments, featuring ultra-large bandwidth and comprehensive lossless networking capabilities.
Ultra-large 22.4T/25.6T non-blocking bandwidth with native 400G/200G ports for AI & HPC spine backbone
Complete data center lossless suite with RoCEv2 zero packet loss and ultra-low latency for RDMA computing clusters
Standard EVPN-VXLAN Fabric + M-LAG device redundancy with hitless batch device upgrade capability
Full-link telemetry: INT real-time monitoring + PTP high-precision clock for fast fault diagnosis
Programmable ASIC supporting OpenFlow/Ansible/NETCONF for SDN automatic deployment
Full hardware redundancy: hot-swappable PSUs & fans with bidirectional airflow for data center cooling
Multi-layer security: uRPF, MACsec, ARP/ND defense, and multi-level ACL to isolate malicious traffic
Product Specifications
Item
S9855-24B16DH-G
S9855-32DH-G
Dimensions (H * W * D) /mm
44 * 442 * 550
Weight
≤12.3kg
Console port
1
Out-of-band management port
10M/100M/1000M Base-T port: 1
USB port
1
CPU
2.2GHz
Flash/SDRAM
NAND FLASH: SSD 128G RAM: 16G
Latency
1μs
Buffer
64MB
Switching capacity
22.4T (bidirection)
25.6T (bidirection)
Forwarding capacity
5.6Bpps
AC-input voltage
100V-240V AC; 50/60Hz
DC-input voltage
240V DC
Power module slot
2
Fan tray slot
6
Air flow direction
Port Panel and Fan Panel Side Exhaust Airflow
Static power consumption
Single power: 232W / Dual power: 247W
Single power: 258W / Dual power: 272W
Typical power consumption (full cables, 50% load)
Single power: 320W / Dual power: 331W
Single power: 344W / Dual power: 350W
Typical power consumption (full transceivers, 100% load)