In this layer, they also run a second HDFS installation (with a separate name node), which acts as a hot standy - if the primary HDFS is down, the system writes to the backup HDFS.

在这个层次，运行第二个HDFS实例(使用单独的名字节点)，作为热备份——如果主HDFS宕机，系统将向备份的HDFS写入。

youdao

Also, the system had to run around the clock, so we wanted hot standby, replication, and other availability and fault tolerance features.

同时，系统必须可以24小时不间断运行，因此我们希望它具有热备功能、复制、其他的可用性和容错特性。

youdao

Once completed, existing building systems will be switched over to run off the new district hot water system, further reducing dependence on fossil fuels.

一旦完成，现在的建筑体系将形成新的区域热水系统，进一步减少对于化石燃料的依赖。

youdao

With more volts you don't need as many amps, which means the system doesn't run as hot and less energy is wasted.

FORBES: OutFront