scParity = z.serverPools[0].defaultParityCount
	}
	rrSCParity := globalStorageClass.GetParityForSC(storageclass.RRS)

	// Data blocks can vary per pool, but parity is same.
	for i, setDriveCount := range z.SetDriveCounts() {
		b.StandardSCData = append(b.StandardSCData, setDriveCount-scParity)
		b.RRSCData = append(b.RRSCData, setDriveCount-rrSCParity)
		b.DrivesPerSet = append(b.DrivesPerSet, setDriveCount)