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为什么启用自动返回是一个好主意

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适用场景

  • ONTAP 9

问题解答

这是一个最佳实践 设置、有各种充分的理由

  • 从ONTAP 9™0及更高版本开始,默认情况下会启用自动恢复
  • 95%以上因瞬时错误而导致的Panic/HA存储故障案例可通过系统重置得到解决
常见问题:

在发生故障后、启动循环和重复接管- Givback又如何?

  • 只要节点 未处于"Waiting for Giveback "状态、ONTAP就不会尝试自动对其进行Givback
  • ONTAP在被否决时不会强制执行Givback

  • 如果同一节点不稳定并在第三次停用自动恢复时发生故障、ONTAP将(默认设置)尝试在60分钟内对该节点执行两次自动恢复

如果加密密钥不同步该怎么办?

  • ONTAP将执行CFO交还、因为数据聚合的交还会自动被否决

示例:

CLUSTER::> storage failover show-giveback

  (storage failover show-giveback)

Node                     Aggregate                Giveback Status

--------------         -----------------          ---------------------------------------------

NODE-1                 CFO Aggregates           Done

                       Data01_Node2             Failed: Operation was vetoed by keymanager                                                  Check the event log

NODE-2                                            No aggregates to give back

2 entries were displayed.

 

结束语:

在大多数环境中、最佳做法是在NetApp存储系统上启用自动恢复、尤其是那些需要高可用性、最佳性能和最低管理开销的环境。

自动交还功能可确保系统能够从故障或维护事件中快速恢复、从而保持平衡和性能、而无需过多手动干预。

此外、通过自动执行交还过程、可以最大限度地降低发生双重故障的风险、因为资源会立即恢复到原始状态、从而减少两个节点都可能发生故障的漏洞窗口。

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