// Check for environment variables and parse into storageClass struct
	if ssc != "" {
		cfg.Standard, err = parseStorageClass(ssc)
		if err != nil {
			return Config{}, err
		}
	} else {
		cfg.Standard.Parity = DefaultParityBlocks(setDriveCount)
	}

	if rrsc != "" {
		cfg.RRS, err = parseStorageClass(rrsc)
		if err != nil {
			return Config{}, err
		}
	} else {
		cfg.RRS.Parity = defaultRRSParity