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Posted by Alex Samoylenko on October 23, 2018
Reclaiming guest OS storage in VMware vSAN 6.7 U1 with TRIM/UNMAP process

VMware vSAN 6.7 Update 1 was presented during VMware VMworld 2018 and became available for download recently. It is still talked over in the IT community as the update brought many new features to the platform. TRIM/UNMAP, the process for guest OS disk space reclamation, is one of those new features. To make the long story short, it enables to use the storage resources smarter once you create thin provisioned virtual disks. In this article, I discuss how to enable TRIM/UNMAP and why actually you need this feature.

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