Throughout this article, the term rolling upgrade is used to refer to this feature.

在本文中，术语滚动升级（rolling upgrade） 用于指这个特性。

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Using the rolling upgrade feature allows you to upgrade the cluster with zero or minimal down time.

使用滚动升级特性允许您使用最少的、甚至零停机时间升级集群。

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The rolling upgrade process starts with a check to see if the secondary server can be transformed into an ER server.

滚动升级流程的第一步是检查辅助服务器是否能够转换为 ER 服务器。

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To juice its terminal sales, the company is rolling out an upgrade to the service, dubbed Bloomberg Next, which it unveiled at a press briefing this week.

FORBES: Despite Setback, Bloomberg Still on Track for Giant 2014 Bonuses

Loose-lips Friday continues with word from that pesky ThinkSecret source (whom we're sure Steve Jobs would love to tar and feather) that Apple will be rolling out a significant upgrade to its current video-download service when and if it announces a new Mac mini at January's Macworld Expo.

ENGADGET: Apple may offer streaming video "downloads"

The move is part of a rolling programme to replace or upgrade the department's radiology equipment.

BBC: MRI scanner