right now I've got an Ubuntu Server with a 3x4TB Software Raid 5 Configuration.

I came to the conclusion, that the best for me would be to switch to Windows Server.

I also researched that RAID 5 configurations shouldn't be used anymore due there is no parity during rebuilding.

Right now, I'm unsure how I should arrange my disks in the Future Windows Environment.

I concluded to several options:

  • Storage Spaces in parity mode (should be similar to RAID 5 with single parity only, should have bad performance)
  • Buying a 4th Disk and using Storage Spaces in mirror mode (should be similar to RAID 10 or 01)
  • Buying a 4th Disk and arranging a Raid 10 with the onboard Raid Controller (it's an HP Microserver Gen8)

What would be the best choice? or even another option?

Thanks in advance

  • Stick with raid 5 unless you have a real reason not to. Having a second disk fail during rebuild is likely to result in total failure with raid10 as well, so that isn't really helping you there. And always remember that raid is no substitute for backups.
    – psusi
    Apr 9 '18 at 15:16
  • I can't stick with (software) raid 5 because I have a Linux raid with mdadm and I'm switching to windows, which doesn't support Linux raid
    – Canonip
    Apr 9 '18 at 18:10
  • Yea, so use the hardware one, or Windows software raid5.
    – psusi
    Apr 9 '18 at 19:52
  • I would suggest to use hardware RAID10 for better performance and resiliency. Check out this links: social.technet.microsoft.com/Forums/lync/en-US/… serverfault.com/questions/685289/… Apr 11 '18 at 12:50
  • Sorry but psusi is utterly wrong about using R5 - R5 is dead technology, and has been for the best part of a decade, pro's don't use it and wouldn't dream of using it on large disks - if you love your data please don't use R5 - R1/10 and R6/60 are the only games in town (or RAID-Z if your a ZFS kinda-guy)
    – Chopper3
    Apr 11 '18 at 13:31

If you are going to Windows, you can boldly use onboard HP Raid controller to build Raid 10 and get a stable, reliable configuration.

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