3 ms·

NTFS/ReFS are not slow. But there is an extensible file system filter layer above them that can slow things down.

• ormax3 2y ago
  microsoft introduced Dev drives for this reason, they are optimized such that no file system filters are attached https://learn.microsoft.com/en-us/windows/dev-drive/ https://learn.microsoft.com/en-us/windows/dev-drive/
  • creatonez 2y ago
    I thought by filters they quite literally mean the antivirus filters in Defender? Does it strip down some of the Windows file semantics too?
    • p_ing 2y ago
      File system filters are pluggable kernel drivers. For example, ProcMon (Sysinternals tool) monitors file systems via a file system filter -- so fun fact, if you outright disable file system filters on a ReFS volume, you won't get any ProcMon results! This was a 'duh' moment for me. https://learn.microsoft.com/en-us/windows-hardware/drivers/ifs/about-file-system-filter-drivers https://learn.microsoft.com/en-us/windows-hardware/drivers/i...