1) Check for the disk to be failed over (hwid 1355) and make sure it have a healthy mirror available.
MyServer:/export/home/nz->nzds -id 1355
Data Slice Status SPU Partition Size (GiB) % Used Supporting Disks
———- ——- —- ——— ———- —— —————-
23 Healthy 1421 7 356 79.92 1138,1355
24 Healthy 1421 6 356 79.84 1138,1355
