This week on the podcast, Dwayne chats with Marc Trouard-Riolle, about Nutanix Cloud Clusters (NC2) on Azure and how to get started. Nutanix Cloud Clusters (NC2) on Microsoft Azure enables your applications to be run where you want them, on-premises or in the public cloud, all operated as a single cloud.<\/p>

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问题

靠近Sync不为特定的VM工作

  • 2022年5月27日
  • 8个答复
  • 130次观看
m
徽章 +1

大家好，

我启动了一个新项目，我们需要为在不同地区的2个Nutanix集群之间进行灾难恢复做好准备。我从一开始就从Prism Central那里得到了数据保护，并且已经具有8 VM，而RPO为15分钟。但是，这一新的VM最近给我带来了麻烦，由于以下问题，我的RPO最多为3个小时：

警告：远程站点的快照复制正在滞后。

警告：快照排队以复制到远程站点

警告：实体正在过渡到较低的频率快照时间表。

公平地说，这个新的VM有点大，有10个内核，50GB RAM和1.22 TB存储。它适用于高的交易MSSQL Server数据库。

我基本上坚持决定这是网络问题，还是Nutanix问题的工作负载能力。

据推测，我们使用的是200Mbps lan-to-lan网络，延迟了20ms。这应该足够吗？

另一方面，我在Nutanix的分析部分中查找群集带宽I/O有时会有一些大峰，并且读取IOPS有时会达到97％。这可能是原因吗？

Hello everyone,<\/p>

I started a new project in which we need to be prepared for a Disaster Recovery between 2 Nutanix clusters in different regions. I did the Data Protection from Prism Central just fine in the beginning, already have 8 VM with NearSync enabled with RPO of 15min. However, this new VM has been giving me trouble lately, giving me a RPO up to 3 hours because of the following issues:
\u00a0<\/p>

Warning : Snapshot Replication to Remote Site is Lagging.<\/p>

Warning : Snapshot queued for replications to remote site<\/p><\/blockquote>

Warning : Entity is being transitioned to a lower frequency snapshot schedule.<\/p><\/blockquote>

\u00a0<\/p>

To be fair this new VM is kinda big, with 10 cores, 50GB RAM, and 1.22 TB storage used. It\u2019s for a high transactional MSSQL Server database.<\/p>

I am basically stuck deciding if this is a networking problem, or a workload capacity from Nutanix problem.<\/p>

We are supposedly using 200MBps LAN-to-LAN networking, with a 20ms latency. Should this be enough?<\/p>

On the other hand, I am looking in Nutanix\u2019s Analysis section that the cluster bandwidth I\/O sometimes have some big peaks, and the Read IOPS goes up to 97% sometimes. Could this be the reason?<\/p>","quoteUsername":"MiguelMartinez","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

8个答复

Bartdonders
Userlevel 1
徽章 +1

嗨，米格尔，

对服务器的变更率有任何想法吗？也许它不适合近乎共同的技术。

您的消息中的第一个警告是暗示带宽问题…

您是否可以从网络角度监视200MBPS连接？链接上没有饱和度？

Hi Miguel,<\/p>

Any idea of the change rate of your server? Maybe it is not suitable for the technology of Nearsync.<\/p>

The first warning in your message is suggesting bandwidth issues\u2026<\/p>

Are you able to monitor the 200Mbps connection from network perspective? No saturation on the link?<\/p>","quoteUsername":"BartDonders","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

m
徽章 +1

你好巴特，

如何确定此VM的变化率？这可以在Nutanix的分析部分中完成吗？

根据网络团队的数据，200Mbps连接的使用率为100％，但Nutanix“无法完全接受”，也就是说，无法获得200MBPS带宽。我真的不认为是这种情况，但我不是Nutanix基础架构的专家。

Hello Bart,<\/p>

How can I determine the change rate of this VM? Can this be done in Nutanix\u2019s Analysis section?<\/p>

According to the network team, the 200MBps connection is being used at 100%, but Nutanix \u201ccan\u2019t receive it completely\u201d, that is, cannot get the 200MBps bandwidth. I don\u2019t really think that\u2019s the case but I am not an expert in Nutanix infrastructure.<\/p>","quoteUsername":"MiguelMartinez","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

Bartdonders
Userlevel 1
徽章 +1

如果线路被充分利用，那么您会遇到问题……三角洲快照不会及时交付……Nutanix将恢复回异步。

If line is fully utilized, then you have your problem\u2026 The delta snapshots are not delivered in time\u2026 Nutanix will revert back to async.<\/p>","quoteUsername":"BartDonders","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
Bartdonders
Userlevel 1
徽章 +1

我认为您应该增加Nutanix复制的带宽。

I think you should increase the bandwidth for the Nutanix replication.<\/p>","quoteUsername":"BartDonders","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
m
徽章 +1

是的，我们计划将其增加到500Mbps。一旦他们确认我的更改，我将发布结果。感谢您的建议。

Yeah we are planning to increase it to 500MBps. I will post results once they confirm me this change. Thanks for the suggestion.<\/p>","quoteUsername":"MiguelMartinez","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
m
UserLevel 3
徽章 +4

你好 @miguelmartinez

您可以通过计算最后4个增量备份大小的平均值来确定通过备份解决方案的变化率。

穆斯塔法·欣达威
Hello @MiguelMartinez<\/user-mention>\u00a0<\/p>

You can determine the change rate through your backup solution by calculate the average of last 4 incremental backup size.<\/p>","quoteUsername":"Moustafa Hindawi","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

m
徽章 +1

你好 @Mousttafa Hindawi

不幸的是回收空间Prism Central中每个快照的列总是空白的，这很奇怪，因为在Prism元素中，我可以在数据保护部分中查看它们。IIRC增量备份的平均值在1GB -2GB之间。

感谢您的信息。

Hello @Moustafa Hindawi<\/user-mention>\u00a0<\/p>

Unfortunately the Reclaiming Space<\/em> column for each snapshot in Prism Central is always blank, which is strange because in Prism Element I could view them in the Data Protection section. IIRC the average of the incremental backups were between 1GB - 2GB.<\/p>

Thank you for the information.<\/p>","quoteUsername":"MiguelMartinez","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

m
徽章 +1

大家好，

只是想提及我对这个问题的解决方案，（嗯，至少部分）正在修复/调整开关中的策略。显然，这不是因为带宽，在我们的情况下，200Mbps就足够了。

但是，我仍然得到警告：快照排队以复制到远程站点然而，但是至少有15分钟的RPO靠近索尼克现在正在工作。

感谢大家提供的建议和信息。

Hello everyone,<\/p>

Just wanted to mention my solution to this issue, (well, at least partially) was fixing\/adjusting the policies in our switches. Apparently it was not because of the bandwidth, 200Mbps was enough in our case.<\/p>

However, I am still getting the Warning : Snapshot queued for replications to remote site<\/em> yet, but at least NearSync with 15min RPO is working now.<\/p>

Thanks everyone for your advice and information provided.<\/p>","quoteUsername":"MiguelMartinez","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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