Hello,
THe vmkernel swap file is a per VM file created for swapping its memory in and out of main memory when the real memory is overcommitted. The used to be a monolithic swap file for ESX version 2.x versions. For VI3 the file is now a per VM file.
Best regards,
Edward L. Haletky
VMware Communities User Moderator
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Author of the book 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education. As well as the Virtualization Wiki at http://www.astroarch.com/wiki/index.php/Virtualization
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Edward L. Haletky
vExpert XIV: 2009-2023,
VMTN Community Moderator
vSphere Upgrade Saga: https://www.astroarch.com/blogs
GitHub Repo: https://github.com/Texiwill