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关于DR Design，如何计算WAN带宽？

w
徽章 +4
大家好



我是泰国的Nutanix合作伙伴，当我在DR中介绍Nutanix产品时，一个问题一直来自对此功能的客户出现。

“如何刺激WAN带宽？”，这意味着DR功能的有效压缩和重复数据删除。



我在Google和Nutanix网站上找不到此信息。

请给我提意见。



tia。

    \n

    \nI'm a Nutanix partner in Thailand, when I present Nutanix product in DR feature one question alway arise from the customers who seriously interest in this feature.

    \n\"How to caculate WAN bandwidth ?\", that mean to how effective compression and deduplication of DR feature.

    \n

    \n I can not find this information on the Google and Nutanix site.

    \n Please advise me.

    \n

    \nTIA.","quoteUsername":"wichein","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
    该主题已关闭以供评论

    5个答复

    Thedude
    秩
    UserLevel 2
    徽章 +11
    你好 -



    您可以分解它的一种方法是以下内容：



    第一个复制大小（种子复制）=（总数据大小 - 已经存在于目标站点上的数据） *压缩％

    要么

    首先复制尺寸（种子复制）=（目标总数 *预期的共同数据） * compresstion％



    在哪里：


    • 总数据尺寸=复制VM的大小
    • 在目标站点上已经存在的数据= target =数据，并且可以删除并且不需要通过电线发送
    • 目标的预期数据=预期在目标存在的数据的百分比，并且可以删除
    • 压缩％=压缩后的压缩率（例如5％压缩将意味着其原始大小的95％）
    因此，例如，如果您有100GB的数据50GB，该数据已经存在于目标上，则以0％的压缩率复制50GB。或者，如果您有100GB的数据，并且预期的位点之间的共同点为50％，则您将以0％的压缩率复制50GB。



    随后的任何其他复制（例如，每日，每小时等）之后的复制看起来如下：



    随后的复制大小=（周期的变更率 - 已在目标站点存在的数据） *压缩％

    要么

    随后的复制大小=（周期的变更率 *预期的目标数据） *压缩％



    在哪里：


    • 周期的每日变化率=在n期间n是复制频率的n期间书面 /更改的数据量
    • 在目标站点上已经存在的数据= target =数据，并且可以删除并且不需要通过电线发送
    • 目标的预期数据=预期在目标存在的数据的百分比，并且可以删除
    • 压缩％=压缩率
    因此，如果您想每小时复制每小时100MB的每小时更改/新数据，并且预期在目标时预期50％的常见数据，则您每小时以0％的压缩率复制50MB，相当于〜28.4kbps



    从那里您可以根据变化率，复制频率和预期重复数据删除率来计算所需的WAN带宽



    压缩率将根据数据类型而变化很大，因此，如果您期望5,10，则可以在计算中使用它。



    希望有帮助！
    http://nutanixbible.com

    \n

    \nOne way you could break it down is the following:

    \n

    \nFirst replication size (seed replication) = (Total data size - data already existing at target site) * compresstion %

    \nOR

    \nFirst replication size (seed replication) = (Total data size * expected common data at target) * compresstion %

    \n

    \nWhere:

    \n

      \n
    • Total data size = size of the VMs being replicated
      \n
    • Data existing at target = data that already exists at the target site and can be deduped and doesn't need to be sent over the wire
      \n
    • Expected common data at target = % of data expected to exist at target and can be deduped
      \n
    • compression % = compression rate after compression (eg. 5% compression would mean it would be 95% of its original size)<\/ul>So for example if you had 100GB of data 50GB which already existed at the target you'd replicate 50GB with a 0% compression rate. OR, if you had 100GB of data and expected 50% commonality between the sites you'd replicate 50GB with a 0% compression rate.

      \n

      \nAny other subsequent replication (eg. daily, hourly, etc.) replication after would look like the following:

      \n

      \nSubsequent replication size = (Change rate for period - data already existing at target site) * compression %

      \nOR

      \nSubsequent replication size = (Change rate for period * expected common data at target) * compression %

      \n

      \nWhere:

      \n

        \n
      • Daily change rate for period = amount of data written \/ changed during n period of time where n is the frequency of replication
        \n
      • Data existing at target = data that already exists at the target site and can be deduped and doesn't need to be sent over the wire
        \n
      • Expected common data at target = % of data expected to exist at target and can be deduped
        \n
      • compression % = compression rate <\/ul>So if you wanted to replicate every hour and expected 100MB of changed\/new data per hour and expected 50% common data at the target, you're replicating 50MB every hour at a 0% compression rate which is equivalent to ~28.4KBps

        \n

        \nFrom there you could calculate the required WAN bandwidth based upon the change rate, replicaiton frequency and expected deduplication rate

        \n

        \nCompression ratios will vary greatly based upon the type of data so if you expect 5,10,n% compression you can use that in your calculation.

        \n

        \nHope that helps!","quoteUsername":"TheDude","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
    Thedude
    秩
    UserLevel 2
    徽章 +11
    我整理了一个快速的Excel工作簿，您可以在其中插入值，它将为预期复制流量提供数据，您可以在此处下载：http：//1drv.ms/1odk9a2
    http://nutanixbible.com
    v
    徽章 +1
    嗨，您可以再次分享Excel表还是发送到Venkat@frontier.in
    一种
    徽章 +1
    嗨，您可以再次共享下载链接吗？

    谢谢

    \nThanks","quoteUsername":"andylim","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
    s
    秩
    徽章 +1
    这是链接：https://1drv.ms/x/s！
    https:\/\/1drv.ms\/x\/s!AiZyOKkRLmEkg64fvFxX5qLejo1hEw<\/a>","quoteUsername":"spoitras","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
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