## Storage usage

The selection of varying data and parity drives has a direct impact on the drive space usage. With storage class, you can optimize for high
redundancy or better drive space utilization.

To get an idea of how various combinations of data and parity drives affect the storage usage, let’s take an example of a 100 MiB file stored

	blobURL := az.serviceURL.NewContainerURL(az.Bucket).NewBlockBlobURL(az.getDest(object))
	// set tier if specified -
	if az.StorageClass != "" {
		if _, err := blobURL.SetTier(ctx, az.tier(), azblob.LeaseAccessConditions{}, azblob.RehydratePriorityStandard); err != nil {
			return "", azureToObjectError(err, az.Bucket, object)
		}
	}

					// Break out on errors.
					sendResult()
					return
				}
			}

			sendResult()
			if !opts.autotune {
				break
			}

			// Try with a higher concurrency to see if we get better throughput
			concurrency += (concurrency + 1) / 2
		}
	}()
	return ch
}

func driveSpeedTest(ctx context.Context, opts madmin.DriveSpeedTestOpts) madmin.DriveSpeedTestResult {
	perf := &dperf.DrivePerf{

```

> The admin user running this command needs the "admin:SetTier" and "admin:ListTier" permissions if not running as root.

Using above tier, set up a lifecycle rule with transition:

```
 mc ilm add --expiry-days 365 --transition-days 45 --storage-class "AZURETIER" myminio/srcbucket

type ARN struct {
	Partition    string
	Service      string
	Region       string
	ResourceType string
	ResourceID   string
}

// Allows english letters, numbers, '.', '-', '_' and '/'. Starts with a
// letter or digit. At least 1 character long.
var validResourceIDRegex = regexp.MustCompile(`[A-Za-z0-9_/\.-]+$`)

// NewIAMRoleARN - returns an ARN for a role in MinIO.
func NewIAMRoleARN(resourceID, serverRegion string) (ARN, error) {

			// with dead end because tcp-keepalive is not fired when there is data in the socket buffer.
			//    https://blog.cloudflare.com/when-tcp-sockets-refuse-to-die/
			// This is a sensitive configuration, it is better to set it to high values, > 60 secs since it can
			// affect clients reading data with a very slow pace  (disappropriate with socket buffer sizes)

		chmod +x mc
fi

set +e

export MC_HOST_minioadm=http://minioadmin:minioadmin@localhost:9100/

./mc ls minioadm/

./mc admin config set minioadm/ api root_access=off

sleep 3s # let things settle a little

./mc ls minioadm/
if [ $? -eq 0 ]; then
	echo "listing succeeded, 'minioadmin' was not disabled"
	exit 1
fi

set -e

killall -9 minio

export MINIO_API_ROOT_ACCESS=on

func (p *scannerMetrics) getCurrentPaths() []string {
	var res []string
	prefix := globalLocalNodeName + "/"
	p.currentPaths.Range(func(key, value interface{}) bool {
		// We are a bit paranoid, but better miss an entry than crash.
		name, ok := key.(string)
		if !ok {
			return true
		}
		obj, ok := value.(*currentPathTracker)
		if !ok {
			return true
		}

## Get started

If you're aware of stand-alone MinIO set up, the process remains largely the same. MinIO server automatically switches to stand-alone or distributed mode, depending on the command line parameters.