Microsoft has introduced a new Microsoft Defender capability named “performance mode” for developers on Windows 11, tuned to reduce the impact of antivirus scans when analyzing files stored on Dev Drives.
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Introduced at this year’s Microsoft Build conference, Dev Drive is a new type of Windows 11 storage volume using the Resilient File System (ReFS) available in public preview and offers developers enhanced performance and resiliency against data corruption.
These developer-focused storage volumes are designed to store large data sets, such as source code repositories, build output or intermediate files, and package caches (e.g., Npm, Nuget).
s Microsoft’s Chief Product Officer for Windows and Devices Panos Panay stated, the Dev Drive and Defender performance mode combination can lead to a build speed boost of up to 30%.
“Dev Drive is based on the Resilient File System, which, combined with a new performance mode capability in Microsoft Defender for Antivirus, offers up to 30% file system improvement in build times for file I/O scenarios,” Panay said.
“The new performance mode is more secure for your workloads than folder or process exclusions, providing an ultimate solution to balance security with performance.”
When this new Defender Antivirus mode is on, it will balance performance and threat protection by delaying scans until file operations are completed.
To set up a new Dev Drive, you have to click the “Create Dev Drive” button after going to System > Storage > Advanced Store Settings > Disks & volumes in the Windows Settings app.
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