Hot spare for special vdev

[SmallBarky]

If you can have a spare, just add it to the sVDEV to begin with. Two way mirror becomes a three way mirror.

Special VDEV (sVDEV) Planning, Sizing, and Considerations

This resource was originally sourced from a Suggestion thread here: https://forums.truenas.com/t/suggestion-better-svdev-planning-oversight-tools-in-gui/394/ Why consider a sVDEV? A sVDEV has the potential to significantly speed up the operations of a spinning hard-drive (HDD) pool. One of it’s functions is to hold metadata (ZFS produces a lot of it). The other function is to make small blocks available for file storage. These small blocks are supposed to store data that is smaller than a cut…