Coming from Windows Server. Is there an equivalent to Bitlocker (encryption) and ReFS? Or which filesystem to use.

If anyone has transitioned from Windows Server to Unraid, I would be very interested in your experience and wisdom.

1. Encryption.
   Is there an equivalent to Bitlocker? I haven't come across anything like it; being able to fully encrypt and decrypt without having to wipe the drive or start fresh. Recovery is simple with the recovery key provided and combining TPM with a password for security.
   The OS drive can also be encrypted to require a password and/or TPM on boot.

2. The Unraid docs go into the XFS, ZFS, and BTRFS file systems a bit, but I'd like to know some real world implications for each so I don't choose the wrong one and then have to undo everything because I chose the wrong filesystem.
   It's simple with Windows, ReFS and NTFS. NTFS as the filesystem inside the virtual disks and those virtual disks are stored on ReFS formatted storage pool.
   ReFS has a file system layer of thin provisioning for virtual disks, so instead of writing to allocate space when creating a virtual disk, it's done instantly by reserving the space instead and data will be written later when there is actual data. This happens even on fixed size disks, so the size doesn't balloon like on thin-provisioned disks when a lot of data is written over. Is there something like that with either XFS, ZFS, or BTRFS?

The scenario I'm looking to create it quite straightforward but may change as I don't think I'll need many virtual machines with the availability of containers.

2 storage pools, 1 for SSDs and 1 for HDDs. Virtual machines and virtual disks on each respective pool with encryption on the pool or the disks.

🙏