if rootDiskSize != "" {
		size, err := humanize.ParseBytes(rootDiskSize)
		if err != nil {
			logger.Fatal(err, fmt.Sprintf("Invalid %s value in root drive threshold environment variable", rootDiskSize))
		}
		globalRootDiskThreshold = size
	}

	domains := env.Get(config.EnvDomain, "")
	if len(domains) != 0 {
		for domainName := range strings.SplitSeq(domains, config.ValueSeparator) {
			if _, ok := dns2.IsDomainName(domainName); !ok {

		di, err = disk.GetInfo(drivePath, false)

		if !globalIsCICD && !globalIsErasureSD {
			if globalRootDiskThreshold > 0 {
				// Use MINIO_ROOTDISK_THRESHOLD_SIZE to figure out if
				// this disk is a root disk. treat those disks with
				// size less than or equal to the threshold as rootDrives.
				rootDrive = di.Total <= globalRootDiskThreshold
			} else {
				rootDrive, err = disk.IsRootDisk(drivePath, SlashSeparator)
			}
		}