Apple has quietly unveiled the Apple Sparse Image Format (ASIF) for Apple Silicon at WWDC, designed to improve the performance of virtual machines (VMs) significantly. Set to debut with macOS Tahoe, ASIF increases read/write efficiency and optimizes storage handling for VMs. This format may also facilitate better interoperability with third-party virtualization tools, potentially solidifying Macs as the premier PCs for running Windows. ASIF's design allows file transfers to be more efficient as it is not dependent on host file system characteristics, ensuring that the disk image size directly reflects the actual data present.
ASIF lets files transfer more efficiently between hosts or disks, because their intrinsic structure doesn't depend on the host file system's capabilities.
The size the ASIF file takes on the file system is proportional to the actual data stored in the disk image.
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