ATCA介绍全解
ATCA — 概述Advanced Telecommunications Computing Architecture 对高性能计算机和网络通信设备的要求： 1) 足够强的数据处理能力 2) 足够高的数据传输速度 3) 足够的外部连接接口 4) 系统管理机制安全高效 5) 标准可靠的系统连接模式 6) 易于维护的系统结构 7) 良好的开放性和可扩展性 8) 抗恶劣环境 9) 容错性强 CompactPCI到CompactPCI Express的发展 CPCI 采用33MHz/32bit~66MHz/64bit 并行总线结构，528Mbyte/s。 从Hot Swap到Multi-computing 从PMC到CompactPCI Bridging 从Power Interface到System Management H.110 CTbus支持包交换背板Gigabit Ethernet以及StarFabric Bus Based with master slot Management loosely defined CompactPCI* PICMG 2.0 CompactPCI* 2.16 Ethernet 2.9 Management PICMG 3.0 Core PICMG 3.1 GbE PICMG 3.2 IBA Bus Based with master slot Node based with switch slot Intel Central Management Module Node based with switch slot Mesh or dual star topologies Centralized Management 2****- - - 1999-2001 1995 Feature PICMG 2.x (cPCI) PICMG 3.x (ATCA) Board Size 6U x 160 mm 0.8” slot pitch Max 21 slots in 19” rack 8U x 280 mm 1.2” slot pitch Max 14 slots in 19” rack Useable Power/Slot 35-70Watts/slot 200~300 Watts/slot Redundancy features 2.16 offers redundant switch fabrics (Dual Star) and Hot Swap, but no mandatory requirements for redundant power, RSS, and system management No requirement for System Management in 2.9 Redundant power rails mandatory to each blade Switch fabric offers many redundant topologies Dual Star, Mesh Redundant IPMI based system management is mandatory Backplane PCI support is optional in 2.16 2.5 support (including telephony clocking) is optional in 2.16 Fabric based architecture no PCI Telephony clocking in base specification Ecosystem Established New AdvancedTCA PICMG 3.0 CompactPCI PICMG 2.16 Interconnect Bandwidth Up to 10 Gbps ~40Gbps(Fabric) 1 Gbps (PICMG 2.16) ~4 Gbps (PCI only) Board Area ~140 sq. in. (930 sq. cm) ~58 sq. in. (374 sq. cm) Power Distribution -48 VDC 3.3, 5, ±12 VDC Thermals (typical slot cooling) 120 - 300 watts 50 - 70 watts PIII P4 Xeon Itanium Nehalem Westmere NP ATCA Deerfield is first Itanium to allow support for DP to allow supp