以下的情况经常会出现：接口不可用，因为需要使用补丁修复错误；或者开发人员必须安排宕机时间来处理活动测试窗口中的接口。
Situations always arise where an interface is unavailable because it needs a patch to resolve an issue, or developers must schedule downtime to work with an interface within an active testing window.
Eclipse建立在允许安排多个窗口的基本概念之上。
Eclipse builds on this basic concept by allowing multiple arrangements of Windows.
如果调整根文件系统的大小，那么只有ext3支持联机调整(这意味着不必安排维护窗口)。
If you resize your root file system, only ext3 is supported for online resizing (which means you don't have to schedule a maintenance window for the system).
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