Starting in Windows Server\u00ae 2012 R2, Hyper-V includes the ability to set certain quality-of-service (QoS) parameters for storage on the virtual machines. For more information about configuring storage QoS for Hyper-V, see Configure Storage Quality of Service.<\/p>\n
Storage QoS provides storage performance isolation in a multitenant environment and mechanisms to notify you when the storage I\/O performance does not meet the defined threshold to efficiently run your virtual machine workloads.<\/p>\n
Key benefits<\/p>\n
Storage QoS provides the ability to specify a maximum input\/output operations per second (IOPS) value for your virtual hard disk. An administrator can throttle the storage I\/O to stop a tenant from consuming excessive storage resources that may impact another tenant. <\/p>\n
An administrator can also set a minimum IOPS value. They will be notified when the IOPS to a specified virtual hard disk is below a threshold that is needed for its optimal performance. <\/p>\n
The virtual machine metrics infrastructure is also updated, with storage related parameters to allow the administrator to monitor the performance and chargeback related parameters. <\/p>\n
Maximum and minimum values are specified in terms of normalized IOPS where every 8 K of data is counted as an I\/O. <\/p>\n
Key features<\/p>\n
Storage QoS allows administrators to plan for and gain acceptable performance from their investment in storage resources Administrators can:<\/p>\n
\u2022Specify the maximum IOPS allowed for a virtual hard disk that is associated with a virtual machine.<\/p>\n
\u2022Receive a notification when the specified minimum IOPS for a virtual hard disk is not met.<\/p>\n
\u2022Monitor storage-related metrics through the virtual machine metrics interface. <\/p>\n
Requirements<\/p>\n
Storage QoS requires that the Hyper-V role is installed. The Storage QoS feature cannot be installed separately. When you install Hyper-V, the infrastructure is enabled for defining QoS parameters associated with your virtual hard disks.<\/p>\n
System_CAPS_noteNote <\/p>\n
Storage QoS is not available if you are using shared virtual hard disks.<\/p>\n
Technical overview<\/p>\n
Virtual hard disk maximum IOPS<\/p>\n
Storage QoS provides the following features for setting maximum IOPS values (or limits) on virtual hard disks for virtual machines:<\/p>\n
\u2022You can specify a maximum setting that is enforced on the virtual hard disks of your virtual machines. You can define a maximum setting for each virtual hard disk. <\/p>\n
\u2022Virtual disk maximum IOPS settings are specified in terms of normalized IOPS. IOPS are measured in 8 KB increments. <\/p>\n
\u2022You can use the WMI interface to control and query the maximum IOPS value you set on your virtual hard disks for each virtual machine. <\/p>\n
\u2022Windows PowerShell enables you to control and query the maximum IOPS values you set for the virtual hard disks in your virtual machines. <\/p>\n
\u2022Any virtual hard disk that does not have a maximum IOPS limit defined defaults to 0.<\/p>\n
\u2022The Hyper-V Manager user interface is available to configure maximum IOPS values for Storage QoS.<\/p>\n
Virtual hard disk minimum IOPS threshold notifications<\/p>\n
Storage QoS provides the following features for setting minimum values (or reserves) on virtual hard disks for virtual machines:<\/p>\n
\u2022You can define a minimum IOPS value for each virtual hard disk, and an event-based notification is generated when the minimum IOPS value is not met.<\/p>\n
\u2022Virtual hard disk minimum values are specified in terms of normalized IOPS. IOPS are measured in 8 KB increments. <\/p>\n
\u2022You can use the WMI interface to query the minimum IOPS value you set on your virtual hard disks for each virtual machine. <\/p>\n
\u2022Windows PowerShell enables you to control and query the minimum IOPS values you set for the virtual hard disks in your virtual machines. <\/p>\n
\u2022Any virtual hard disk that does not have a minimum IOPS value defined will default to 0.<\/p>\n
\u2022The Hyper-V Manager user interface is available to configure minimum IOPS settings for Storage QoS.<\/p>\n","protected":false},"excerpt":{"rendered":"
Starting in Windows Server\u00ae 2012 R2, Hyper-V includes the ability to set certain quality-of-service (QoS) parameters for storage on the virtual machines. For more information about configuring storage QoS for Hyper-V, see Configure Storage Quality of Service.<\/p>\n
Storage QoS provides storage performance isolation in a multitenant environment and mechanisms to notify you when the storage […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[78],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6220"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6220"}],"version-history":[{"count":1,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6220\/revisions"}],"predecessor-version":[{"id":6221,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6220\/revisions\/6221"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6220"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6220"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6220"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}