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发明授权
CN101630237B 一种对RAID进行控制的方法、装置和系统 有权 转让

一种对RAID进行控制的方法、装置和系统
摘要：
本发明实施例公开了一种对RAID进行控制的方法、装置和系统。本发明实施例所提供的方法，实际上是在检测到RAID中有成员盘离线时，并不是直接将该成员盘的离线状态告知RAID控制器，而是将RAID控制器对离线成员盘下发的命令保存起来，为离线成员盘设置了一个安全时限，如果在安全时限内该离线成员盘又上线了，就将存储的RAID控制器对离线成员盘下发的命令返回给该成员盘，成员盘可以继续进行正常状态，从而避免了如同现有技术中直接将该成员盘离线状态汇报给RAID控制器，造成RAID进入降级模式的情况。本发明实施例所提供的方法是将安全时限内突发性成员盘离线和上线事件进行屏蔽，从而避免这种安全时限内的成员盘离线和上线事件导致RAID读写能力下降。
摘要（英）：

The embodiment of the invention discloses a method, a device and a system for controlling RAID. The method for controlling RAID comprises the following steps: when an off-line member disc is detected in RAID actually, preserving a command which is issued by the off-line member disc by a RAID controller instead of directly reforming an off-line state of the member disc to the RAID controller; setting a safe time limit for the off-line member disc; if the off-line member disc is online in the safe time limit, returning the issued command of the off-line member disc by the stored RAID controllerto the member disc to ensure that the member disc can continuously operate in a normal state, thereby avoiding the condition that the off-line state of the member disc is directly reported to the RAID controller to cause the RAID to enter a degrading mode in the prior art. The method for controlling RAID is used for shielding instant off-line and online events of the member disc in the safe time limit and avoiding RAID literacy reduction caused by the off-line and online events of the member disc in the safe time limit.

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