I'm not looking for what Synology Hybrid RAID (SHR) allows the user to do, but rather, what is the concept that SHR uses to allow you combine disks of different sizes? In most RAID implementations such as ZFS, Linux RAID/mdadm or Btrfs, only disks of the same size can be combined. I have also heard that SHR is based on Linux RAID, and if so, how can it allow me to use different sized disks when standard Linux RAID can't? Does it use a scheme where disks are partitioned into equal sized chunks and then setup in an array? The documentation on Synology's website explains the outcome that SHR can achieve, but now how it achieves it, which is what I would like to know.
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