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当Nutanix节点的本地存储不足以存储本地虚拟机的数据时，会发生什么情况?

  • 2016年3月14日
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T
徽章 ＋5
  • Teru
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你好,
根据我手头的材料，Nutanix将在本地存储中保存一份副本，以满足本地数据的需要。因此，如果某个节点上运行着一些存储密集型的虚拟机，而该节点的本地存储不足以存储所有本地虚拟机的数据，那么还需要在远程节点上检索一些数据?想知道确切的行为。

还有一个关于dr的问题。如果我使用vsphere，我仍然需要购买SRM许可，或者SRM是可选的(例如，对于一些专用特性?)对于Hyper-V，由于Hyper-V的容灾特性不如VM那么丰富，我们还能在Hyper-V中使用Nutanix的“保护域”特性进行容灾吗?

提前谢谢你!

最好的问候,
Teru Lei
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最佳答案乔恩2016年3月14日14:29

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    \nAccording to my material on hand that Nutanix will keep a copy in local storage for local data required. So if there are some storage intensive VMs running in one node and the local storage in that node is not enough for data of all local VM, some data should still need to be retrieved in remote node? would like to know the exact behavior.
    \n
    \nAnd one more question for DR. If I use vsphere, I still need to buy SRM license or SRM is optional (e.g. for some dedicated features?). For Hyper-V, since the DR feature of Hyper-V is not as rich as VM, can we still use the \"Protect Domain\" feature in Nutanix for DR in Hyper-V?
    \n
    \nThanks a lot in advance!
    \n
    \nBest Regards,
    \nTeru Lei","quoteUsername":"Teru","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

    3回复

    乔恩
    排名
    Userlevel 6
    徽章 + 29
    Teru -谢谢你的帮助

    RE“大虚拟机”——这是一个粗略的高级示例
    如果每个节点有10TB的容量，而您有一个4节点的系统，那么您将有40TB的存储空间。

    在我们支持的任何hypervisor上，“数据存储”(又名容器)将显示为40TB，您可以提供一个非常大的VM，也许为它分配20TB的容量就可以了。

    显然，这比单个节点要大，因此我们的软件将监视数据的访问模式，并将最热的数据保存在该节点的本地，而将其余的数据放在其他地方。


    现在，例如，如果20TB VM一直都是100%的活动数据(在EPIC Cache等应用中可以看到)，这将是所有闪存的完美用例，这样本地或远程数据都将在闪存中。在大多数应用程序中，情况并非如此，其中很多数据实际上是冷的，只有一个子集(称为“工作集”)实际上是热的。

    从调整大小的角度来看，如果你不做所有的闪存，你将需要确保你有足够的SSD来覆盖工作集的大小。

    再保险SRM /博士
    它只是可选的，不是严格要求的。SRM很擅长提供编排，使运行簿基本实现数字化。我们有一个经过认证的SRA (SRM适配器)，所以如果您选择使用SRM，那就太好了。

    如果没有，您仍将拥有很棒的内建在每个vm上的复制，但还没有(目前还没有)内建编排。
    JonKohler |技术总监，工程，Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler |如果有用请赞美!
    \n
    \nRE \"Big VMs\" - Here's a rough high level example
    \nIf each node had 10TB of capacity, and you had a 4 node system, you'd have 40TB of storage.
    \n
    \nOn any hypervisor we support, the \"datastore\" (aka container) will show up as 40TB, You could provision a very large VM, perhaps with 20TB of capacity assigned to it just fine.
    \n
    \nObviously this is bigger than a single node, so our software will monitor the access patterns of the data and keep the hottest data local to that node, and put the rest of the data elsewhere.
    \n
    \n
    \nNow, for example, if that 20TB VM was 100% active data all the time (which is seen in applications like EPIC Cache), this would be a perfect usecase for all flash everywhere, such that data local or remote would all be in flash. This is not the case in most applications, where lots of data is actually cold, and only a subset (known as the \"Working set\") is actually hot.
    \n
    \nFrom a sizing perspective, if you dont do all flash, you'll want to make sure you've got enough SSD to cover the working set size.
    \n
    \nRE SRM\/DR
    \nIt is optional only, not strictly required. SRM is great at providing orchestration to basically make your runbooks digital. We have a certified SRA (SRM Adapter), so if you chose to use SRM, thats great.
    \n
    \nIf not, you'll still have great built in per-VM replication, but not (yet) orchestration built in.","quoteUsername":"Jon","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
    乔恩
    排名
    Userlevel 6
    徽章 + 29
    此外，关于存储结构/IO和DR的主题，请参阅Nutanix Bible。

    http://nutanixbible.com
    JonKohler |技术总监，工程，Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler |如果有用请赞美!
    T
    徽章 ＋5
    嗨，Jon，非常感谢你的信息!最好的问候,Teru Lei

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