问题

关于NearSync容灾的问题

  • 2019年8月14日
  • 1回复
  • 1072的浏览量
H
Userlevel 2
徽章 + 17
你好,
我的客户正在考虑将NearSyncDR用于其生产集群。
看起来我必须向他们解释如何配置NearSync，以及它是如何工作的，以满足他们未来计划的需求。
重要的是，我在Nutanix的门户网站上找到了一些与此技术相关的文档，但没有任何东西能在下面的例子中清楚地解释为什么它应该按其行为运行:
在这种情况下，我配置了一个时间表，重复1分钟和本地集群5天的保留策略，NearSync将工作，因为它将:
  • 每分钟创建一个快照，并保留15分钟。
  • 创建每小时快照，并保留6小时。
  • 创建每日快照，并保留5天。
所以问题是，如果快照a在15分钟后被创建和删除，在这种情况下，用户想要使用快照a来恢复他的文件，他怎么做?
快照的保留时间可以通过任何命令改变吗?
\nMy customer is considering leveraging NearSyncDR for their production clusters.
\nLooks like I have to explain to them how NearSync should be configured and how it works to match their needs for future plan.
\nAs it matters, I have dived around Nutanix portal for some documents related to this technology but nothing explains clearly why it should run by its behavior in the example below:
\nIn the case I configured a schedule that repeats 1 min and retention policy of local cluster for 5 days, NearSync will work as that it will:
\n
    \n
  • Create a snapshot per minute and retain it for 15 minutes. \n
  • Create hourly snapshots and retain for 6 hours. \n
  • Create daily snapshots and retain for 5 days. \n<\/ul>So the question is if a snapshot A was created and deleted in 15 mins later, in the case user wanted to use this snapshot A to recover his file, how did he do?
    \nIs snapshot retaining time able to be changed by any command?","quoteUsername":"hienle","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

1回复

米
排名

你好,

根据您在问题中提供的配置，一旦快照A被删除，您在15分钟后无法恢复快照A。然而，你可能/可能不会在每小时快照中找到用户文件。这意味着，如果删除文件和快照a，您将丢失从最后0到最大45分钟的工作。

没有办法更改计划快照的过期时间，不过在这种情况下，手动快照可能很有用。此外，您可以在创建手动快照时为其提供过期日期。

因此，建议/建议是在删除用户文件之前进行手动快照(有/没有过期)。

最好的问候,

曼西Rajeshbhai Vankawala

希望这可以帮助!
Hello,<\/p>

As per the configuration you have provided in your question, you can not recover snapshot A after 15 min, once it\u2019s deleted. However, you may\/ may not find user file in hourly snapshots. That means you will loose work from last 0 to maximum 45 mins, if you delete a file and snapshot A.<\/p>

\u00a0<\/p>

There is no way to change expiry time for scheduled snapshots, though manual snapshot can be useful in\u00a0this case. Also, you can provide expiry date for Manual Snapshots on it\u2019s creation.\u00a0<\/p>

\u00a0<\/p>

Thus, the suggestion\/advice would be to take a manual snapshot (with\/without no expiry) before user file deletion.\u00a0 \u00a0\u00a0<\/p>

\u00a0<\/p>

Best Regards,<\/p>

Mansi Rajeshbhai Vankawala<\/p>","quoteUsername":"Mansi Rajeshbhai","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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