If you need to test file system load, test failover clusters, or need large dummy files otherwise, rather than creating new files and slowly filling them with random data, try this:

$filepath = "$env:temp\testfile.txt"
$sizeBytes = 5.75MB

$file = [System.IO.File]::Create($filepath)

# show dummy file in Windows Explorer
explorer /select,$filepath

This code creates dummy files of any size in a snap and can be used to quickly create storage load. Just don’t forget to delete these files after use.

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