{"id":4350,"date":"2019-11-04T03:55:11","date_gmt":"2019-11-04T03:55:11","guid":{"rendered":"https:\/\/pariswells.com\/blog\/?p=4350"},"modified":"2019-11-04T03:55:11","modified_gmt":"2019-11-04T03:55:11","slug":"measuring-hyper-v-disk-rate-change","status":"publish","type":"post","link":"https:\/\/pariswells.com\/blog\/research\/measuring-hyper-v-disk-rate-change","title":{"rendered":"Measuring Hyper V Disk Rate Change"},"content":{"rendered":"
You can collect data characteristics for the virtual<\/div>
machines in a VPG in one of the following ways:<\/div>
\u00a0<\/div>
  • By using operating system performance monitors, such as the Microsoft Performance Monitor utility for Windows operating systems or the iostat command for Linux operating systems.<\/li>
  • By using Windows PowerShell in Windows Server 2012 to collect network utilization (and other information). When using metering ACLs, you can measure the total network traffic sent and received by a virtual mach ine. To collect performance characteristics for the virtual machines in a VPG, using PowerShell, do the following:<\/li><\/ul>
    \u00a0<\/div>
    Turn on resource metering for the relevant virtual machines, if it is not already enabled<\/div><\/div>
    Adjust the collection frequency, if necessary.<\/div>
    \u00a0<\/div>
    Collect the relevant statistics. Zerto recommends that you collect data for a minimum of one day. When you have enough statistics, you may want to turn off resource metering since data collection can impact performance.<\/div>
    \u00a0<\/div>
    Turning on Resource Metering\u00a0<\/strong><\/div>
    By default, resource metering\u00a0is not enabled. To turn on resource metering for one virtual machine, enter the following<\/div>
    PowerShell command:<\/div>
    \u00a0<\/div>
    Get-VM <VM-name > | Enable-VMResourceMetering<\/div>
    \u00a0<\/div>
    To turn on monitoring for all virtual machines on a server at one time, enter the following PowerShell command:<\/div>
    \u00a0<\/div>
    Get-VM | Enable-VMResourceMetering<\/div>
    \u00a0<\/div>
    Once you enable resource metering, Hyper-V begins to collect data. You can reset metering at any time, which discards the data that has been collected up to that point.<\/div>
    If resource metering is enabled but no NetworkAdapterAcls are configured, Hyper-V configures them to measure total network traffic. To measure network traffic throug h an IP range, configure the NetworkAdapterAcls for the IP range before runningEnable-VMResourceMetering<\/div>
    .<\/div>
    Adjusting the Collection Frequency<\/strong><\/div>
    By default, the collection frequency is once every hour. You can change the collection frequency, but understand that datacollection can impact performance. To change the<\/div>
    collection frequency, enter the following command:<\/div>
    \u00a0<\/div>
    Set-VMHost \u2013ComputerName <host-server-name> -ResourceMeteringSaveInterval <HH:MM:SS><\/div>
    \u00a0<\/div>
    The collection frequency is always set at the host server level.You cannot adjust the collection frequency per virtual machine<\/div>
    .For example, if you enter 01:30:00, resource consumption will be ollected every hour and a half.<\/div>
    \u00a0<\/div>
    Collecting and Viewing the Relevant Statistics<\/strong><\/div>
    To view resource usage for one virtual machine, enter the following command:<\/div>
    \u00a0<\/div>
    Get-VM <VM-name> | Measure-VM<\/div>
    \u00a0<\/div>
    Resource metering data can be displayed for all of the virtual machines that are running on a host. To see data for all of thevirtual machines on a host, enter the following command:<\/div>
    \u00a0<\/div>
    Get-VM | Measure-VM<\/div>
    \u00a0<\/div>
    You can configure PowerShell to display only certain statistics. To do this, you must know the object names that PowerShell<\/div>
    assigns to each statistic. You can see the object names by entering the following command:<\/div>
    \u00a0<\/div>
    Get-VM | Measure-VM | Select-Object *<\/div>
    \u00a0<\/div>
    For example, when working with Zerto Virtual Replication, you are interested in network traffic.To list the network traffic foreach virtual machine, enter the following command:<\/div>
    \u00a0<\/div>
    Get-VM | Measure-VM | Select-Object VMName, NetworkMeteredTrafficReport<\/div>
    \u00a0<\/div>
    You can use VM Network Adapter ACLs to measure network activity to and from a specific network. For example, to meter<\/div>
    network traffic for a special subnet or IP address:<\/div>
    \u00a0<\/div>
    Add-VMNetworkAdapterAcl -VMName <VM-name> -Action Meter -RemoteIPAddress 10.10.0.0\/16 -Direction Outbound<\/div>
    \u00a0<\/div>
    Turning off Resource Metering<\/strong><\/div>
    To disable the collection of performance statistics, enter the following PowerShell command:<\/div>
    Disable-VMResourceMetering -VMName <VM-name><\/div>
    \u00a0<\/div><\/div><\/div>
    \u00a0<\/div>
    \u00a0<\/div><\/div>","protected":false},"excerpt":{"rendered":"

    You can collect data characteristics for the virtualmachines in a VPG in one of the following ways:\u00a0By using operating system performance monitors, such as the Microsoft Performance […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4350","post","type-post","status-publish","format-standard","hentry","category-research"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t