The SAS also eures that the subscriber's security module receives the authorization needed to view the programs, and the SAS acts as a backup system in case of failure.

SAS还欧元，订阅者的安全模块接收授权需要查看项目，和SAS作为备份系统的失败。

youdao

Ipsotek's system can serve as crucial backup in such a case, potentially averting an attack and saving lives.

Ipsotek系统对于可能避免的攻击并挽救生命这样的案件能起到关键的后援作用。

youdao

A fairly large (and possibly new) hard disk is important, as this system may serve as your backup server.

相当大的(可能也是新的)硬盘很重要，因为此系统可以充当您的备份服务器。

youdao

This acts as a network-based backup and synchronisation system for Apple's smartphones and tablets.

BBC: Fifth iPhone expected to be launched by Apple

Just one year ago, the Bush administration announced it would keep the ground-based LORAN system operational to serve as a backup for the satellite-based global positioning systems, which are becoming ubiquitous in cars, planes and ships.

CNN: Navigation system, aid to farmers among budget cuts

And you have a certain amount of redundancy in the system as well in terms of storage you can remove, a place where pictures and backup files can reside, and a way for files to be moved around without having to play around with cables or network connections.

FORBES: Beware The False Economy Of Extra Storage On Your Samsung Galaxy S4