Applies to ONTAP 9 Advance Disk Partitioning (ADP) Answer The spare disk refers to the root partition of that disk, so it's expected that there isn't Local Usable Data space available Additional Infor...Applies to ONTAP 9 Advance Disk Partitioning (ADP) Answer The spare disk refers to the root partition of that disk, so it's expected that there isn't Local Usable Data space available Additional Information additionalInformation_text