AR_RAID5
config.type = AR_RAID5;
config.type == AR_RAID5) {
case AR_RAID5:
(uint64_t)disk_size * (rdp->width - (rdp->type == AR_RAID5));
raid->total_sectors = disk_size * (raid->width-(raid->type==AR_RAID5));
disk_sectors = rdp->total_sectors / (rdp->width - (rdp->type == AR_RAID5));
rdp->total_sectors / (rdp->width - (rdp->type == AR_RAID5));