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未将备用磁盘设为零的任何影响

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适用场景

ONTAP

问题解答

无影响。

驱动器不需要归零即可开始重建。重建将覆盖磁盘上的块、因此不需要预置零。开始重建时、备用磁盘标签区域将被擦除;但是、这只需要很少的时间、因此可以忽略。Sick Disk Copy (Sick Disk Copy、SDC)也是如此、它会复制磁盘的全部内容、而在当前版本的Data ONTAP上、Sick Disk Copy (SDC)是更换磁盘的首选方法(避免重建)。

唯一需要置零磁盘的情况是、构建新聚合或添加新磁盘以增加现有聚合的大小。但是、在这种情况下、将自动开始置零。因此、将磁盘归零的唯一优势是、如果管理员希望增加聚合的大小、可以立即添加磁盘。

注意:如果由于硬件出现某些故障,一个RAID组中的多个磁盘出现故障,并且无法重新恢复,例如,由于时间戳/CP计数过时而导致这些磁盘成为孤立磁盘,则Data ONTAP可能会将这些磁盘分配给备用磁盘池。此外、如果受影响的RAID组仍处于脱机状态、则将这些磁盘置零可能会适得其反、因为这些磁盘仍包含数据、对于数据恢复来说可能很有价值。因此、应谨慎对待磁盘预置零操作、并且仅在系统运行状况良好时执行。

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