|Feature/Aspect||“Built-in” LIS||Microsoft LIS package|
|Version Number||No version number assigned. Don’t try to compare with the “4.0”, “4.1”, etc. version numbers assigned to the Microsoft LIS package||LIS 4.0, 4.1, etc.|
|How up to date?||Snapshot as of the code deadline for the distro version||Most up-to-date because released directly by Microsoft|
|Update process||Automatically updated as part of the distro update process||Requires a separate step to update the Microsoft LIS package. Bad things can happen if you don’t do this extra step.|
|Can get latest LIS updates for older distro versions?||No. Only path forward is to upgrade to the latest minor version of the distro (6.8, or 7.2, for CentOS)||Yes. Available for a wide range of RHEL/CentOS versions back to RHEL/CentOS 5.2. See this documentation for details on functionality and limitations for older RHEL/CentOS versions.|
|Meets distro vendor criteria for support?||Yes||No, for RHEL. Considered “uncertified drivers” by Red Hat. Not an issue for CentOS, which has community support.|
|End customer support process||Via your distro vendor, or via Microsoft support. LIS fixes delivered by distro vendor normal update processes.||Via Microsoft support per your Hyper-V support agreement. Fixes delivered as a new version of the Microsoft LIS package.|
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