Thank You. ... and yes - this is the problem with 'dedicated' SPARE drives - they just sit there unused and You never know if they will work when the time come

Thank You. ... and yes - this is the problem with 'dedicated' SPARE drives - they just sit there unused and You never know if they will work when the time comes. ZFS resolved that with DRAID where there are not 'dedicated' SPARE disks but 'spare block' spread across the disks: - https://github.com/openzfs/zfs/wiki/dRAID-HOWTO/001b44728e1ac3329a4d91be97bcd565a8f351b7 https://github.com/openzfs/zfs/wiki/dRAID-HOWTO/001b44728e1a...