Well I'd still use RAID-1 for the system drive so you can easily swap it out without having to reinstall. It would be a shame losing that 3TB porn collection though... But you're willing to trust a new file system with no long-term usage with your valuable data?
I still didn't figured out one thing: In Windows 2012 Server, in Disk Management (MS management Console 3.0) diskmgmt.msc if you format new partition, there is ReFS option... ...on the Windows 8 x64 with two imported urefs.dll (x64 and x32) and refs.sys (x64) and also correctly REGed ReFS entry, the option in Disk Management is missing... (there is ReFS option in Windows Explorer format and also in command line format) So, I wonder where Disk Management (MS management Console 3.0) diskmgmt.msc settings are stored... ah ...there is always the pain with sharing screenshots ) You open something and voila... it is Pandora's box... )
On Windows 8 x64 you have to add 3 files to your system: refs.sys (x64) to \windows\system32\drivers urefs.dll (x64) to \windows\system32 urefs.dll (x32) to \windows\syswow64 (support for x32 applications) and import this reg: <below> ...then you can read and write in ReFS Code: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-f..mutilityrefslibrary_31bf3856ad364e35_none_1f2d2782e2defb44] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-f..mutilityrefslibrary_31bf3856ad364e35_none_1f2d2782e2defb44\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs.resources_31bf3856ad364e35_cs-cz_38e9c1cf906fa7ad] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs.resources_31bf3856ad364e35_cs-cz_38e9c1cf906fa7ad\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs.resources_31bf3856ad364e35_en-us_94063be5cc1af2bf] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs.resources_31bf3856ad364e35_en-us_94063be5cc1af2bf\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs_31bf3856ad364e35_none_ce43257ecc00c7e0] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs_31bf3856ad364e35_none_ce43257ecc00c7e0\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refsformat_31bf3856ad364e35_none_870a01c701ba19db] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refsformat_31bf3856ad364e35_none_870a01c701ba19db\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs-fsd_31bf3856ad364e35_none_f85c6806add23570] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs-fsd_31bf3856ad364e35_none_f85c6806add23570\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs-mof_31bf3856ad364e35_none_f889b594adafe46b] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\amd64_microsoft-windows-refs-mof_31bf3856ad364e35_none_f889b594adafe46b\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\x86_microsoft-windows-f..mutilityrefslibrary_31bf3856ad364e35_none_c30e8bff2a818a0e] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\x86_microsoft-windows-f..mutilityrefslibrary_31bf3856ad364e35_none_c30e8bff2a818a0e\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\x86_microsoft-windows-refsformat_31bf3856ad364e35_none_2aeb6643495ca8a5] @="6.2" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide\Winners\x86_microsoft-windows-refsformat_31bf3856ad364e35_none_2aeb6643495ca8a5\6.2] "6.2.9200.16384"=hex:01 @="6.2.9200.16384" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Publishers\{036647d2-2fb0-4e32-8349-3f5c19c16e5e}] @="ReFS" "ResourceFileName"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,\ 00,6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,\ 5c,00,64,00,72,00,69,00,76,00,65,00,72,00,73,00,5c,00,72,00,65,00,66,00,73,\ 00,2e,00,73,00,79,00,73,00,00,00 "MessageFileName"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,\ 6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,\ 00,64,00,72,00,69,00,76,00,65,00,72,00,73,00,5c,00,72,00,65,00,66,00,73,00,\ 2e,00,73,00,79,00,73,00,00,00 "ParameterFileName"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,\ 00,6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,\ 5c,00,64,00,72,00,69,00,76,00,65,00,72,00,73,00,5c,00,72,00,65,00,66,00,73,\ 00,2e,00,73,00,79,00,73,00,00,00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Publishers\{036647d2-2fb0-4e32-8349-3f5c19c16e5e}\ChannelReferences] "Count"=dword:00000001 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Publishers\{036647d2-2fb0-4e32-8349-3f5c19c16e5e}\ChannelReferences\0] @="System" "Id"=dword:00000008 "Flags"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\WMI\Autologger\ReFSWmiLog] "LogFileMode"=dword:00008400 "MinimumBuffers"=dword:00000008 "Start"=dword:00000000 "GUID"="{5b35cb76-1814-46a7-ad3e-963c637681dc}" "MaximumBuffers"=dword:00000010 "ClockType"=dword:00000002 "BufferSize"=dword:00000040 "Status"=dword:00000000 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\WMI\Autologger\ReFSWmiLog\{740f3c34-57df-4bad-8eea-72ac69ad5df5}] "EnableLevel"=dword:00000000 "Enabled"=dword:00000001 "LoggerName"="ReFSWmiLog" "EnableFlags"=dword:e8008007 "_Description"="ReFSWmiLog Trace Provider" [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\EventLog\System\ReFS] "ProviderGuid"="{036647d2-2fb0-4e32-8349-3f5c19c16e5e}" "EventMessageFile"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,\ 00,6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,\ 5c,00,64,00,72,00,69,00,76,00,65,00,72,00,73,00,5c,00,72,00,65,00,66,00,73,\ 00,2e,00,73,00,79,00,73,00,00,00 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ReFS] "BootFlags"=dword:00000080 "DisplayName"="" "ErrorControl"=dword:00000001 "Group"="Boot File System" "Start"=dword:00000003 "Type"=dword:00000002 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Control\WMI\Autologger\ReFSWmiLog] "LogFileMode"=dword:00008400 "MinimumBuffers"=dword:00000008 "Start"=dword:00000000 "GUID"="{5b35cb76-1814-46a7-ad3e-963c637681dc}" "MaximumBuffers"=dword:00000010 "ClockType"=dword:00000002 "BufferSize"=dword:00000040 "Status"=dword:00000000 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Control\WMI\Autologger\ReFSWmiLog\{740f3c34-57df-4bad-8eea-72ac69ad5df5}] "EnableLevel"=dword:00000000 "Enabled"=dword:00000001 "LoggerName"="ReFSWmiLog" "EnableFlags"=dword:e8008007 "_Description"="ReFSWmiLog Trace Provider" [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\EventLog\System\ReFS] "ProviderGuid"="{036647d2-2fb0-4e32-8349-3f5c19c16e5e}" "EventMessageFile"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,\ 00,6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,\ 5c,00,64,00,72,00,69,00,76,00,65,00,72,00,73,00,5c,00,72,00,65,00,66,00,73,\ 00,2e,00,73,00,79,00,73,00,00,00 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\ReFS] "BootFlags"=dword:00000080 "DisplayName"="" "ErrorControl"=dword:00000001 "Group"="Boot File System" "Start"=dword:00000003 "Type"=dword:00000002 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\ReFSWmiLog] "LogFileMode"=dword:00008400 "MinimumBuffers"=dword:00000008 "Start"=dword:00000000 "GUID"="{5b35cb76-1814-46a7-ad3e-963c637681dc}" "MaximumBuffers"=dword:00000010 "ClockType"=dword:00000002 "BufferSize"=dword:00000040 "Status"=dword:00000000 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\ReFSWmiLog\{740f3c34-57df-4bad-8eea-72ac69ad5df5}] "EnableLevel"=dword:00000000 "Enabled"=dword:00000001 "LoggerName"="ReFSWmiLog" "EnableFlags"=dword:e8008007 "_Description"="ReFSWmiLog Trace Provider" [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventLog\System\ReFS] "ProviderGuid"="{036647d2-2fb0-4e32-8349-3f5c19c16e5e}" "EventMessageFile"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,\ 00,6f,00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,\ 5c,00,64,00,72,00,69,00,76,00,65,00,72,00,73,00,5c,00,72,00,65,00,66,00,73,\ 00,2e,00,73,00,79,00,73,00,00,00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ReFS] "BootFlags"=dword:00000080 "DisplayName"="" "ErrorControl"=dword:00000001 "Group"="Boot File System" "Start"=dword:00000003 "Type"=dword:00000002