NTP基础培训说课.ppt

* HJ210 NTP网络时间服务器---技术特点 使用GPS/北斗/GLONASS参考源为一级网络时间服务器 选取高稳定的工业级服务器主板，无风扇设计，采用用高效嵌入式Linux操作系统 可选配高稳晶振或铷原子钟作为守时部件，支持独立时间守时功能 授时精度高，PPS最高精度30ns，服务器时间精度25us ，局域网精度5ms 时间误差小10年在无天线情况下误差1s 无故障运行两万六千小时 支持SNMP网管功能 NTP请求量8000次/秒，支持万台客户端访问 1s=1000ms 1ms=1000us * 时间服务器安装过程 将天线和NTP服务器的ANT头相连即可 采集卫星时间 连接吸盘天线后，锁定状态为locked，接受至少一个小时时间。 * HJ210 NTP网络时间服务器---后视图 4路独立10/100/1000自适应以太网接口* 电源接入 1PPS、10MHz频率输出 双路TOD信息输出：卫星状态时间、位置信息 * 天线或时间信号输入 * HJ210 NTP网络时间服务器---前视图 VFD高亮度液晶屏* 滚动显示GPS收星状态、时间、GPS卫星个数、经纬度、高度、各网卡IP、系统工作状态 三色指示灯* 指示NTP服务是否启动、网络连接是否正常、NTP请求是否超过8000次/秒和GPS是否锁定等 * 时间服务器基本命令 1 ipset 设置服务器IP地址和网管 * 时间服务器 2 ntpq -p 3 ntpdate –d IP * 四 NTP同步网络构建方案—系统管理 * 银行实施案例—人民银行清算总中心 ? 2013 TFT Corporation ? 2010 IBM Corporation ? 2013 TFT Corporation * We see clients working hard at solving the Storage Efficiency challenge, in an attempt to managing Storage Growth, Cost, and Complexity. Top strategies include: Shrinking the data you have to store, so you can stop storing so much Moving the right data to the right storage technology to balance costs and performance Getting more utilization from the equipment you already have on the floor All these are good efforts that can help improve Storage Efficiency …. * We see clients working hard at solving the Storage Efficiency challenge, in an attempt to managing Storage Growth, Cost, and Complexity. Top strategies include: Shrinking the data you have to store, so you can stop storing so much Moving the right data to the right storage technology to balance costs and performance Getting more utilization from the equipment you already have on the floor All these are good efforts that can help improve Storage Efficiency …. * We see clients working hard at solving the Storage Efficiency challenge, in an attempt to managing Storage Growth, Cost, and Complexity. Top strategies include: Shrinking the data you have to store, so you can stop storing so much Moving the right data to the right storage tech