raid.min_spare_count option specifies the minimum number of spare drives required to avoid warnings about low spare drives. If every filesystem drive has the minimum number of spare drives specified in
raid.min_spare_count that are appropriate replacements, then no warning is displayed for low spares. This option can be set from 0 to 4. The default setting is 0 for capacity-optimized platforms and 1 for others. Setting this option to 0 means that no warnings will be displayed for low spares, even if there are no spares available. This option can be set to 0 only on standalone or HA systems with 16 or fewer attached drives with RAID-DP aggregates. A setting of 0 is not allowed on systems with RAID4 aggregates.