When using Veeam Backup and Replication, you can use S3 compatible object storage such as MinIO as a capacity tier for backups.  This disaggregates storage for the Veeam infrastructure and allows you to retain control of your data. With the ease of use of setup and administration of MinIO, it allows a Veeam backup admin to easily deploy their own object store for capacity tiering.

## Prerequisites

type capacityInfo struct {
	XMLName   xml.Name `xml:"CapacityInfo" json:"-"`
	Capacity  int64    `xml:"Capacity"`
	Available int64    `xml:"Available"`
	Used      int64    `xml:"Used"`
}

const (
	systemXMLObject   = ".system-d26a9498-cb7c-4a87-a44a-8ae204f5ba6c/system.xml"
	capacityXMLObject = ".system-d26a9498-cb7c-4a87-a44a-8ae204f5ba6c/capacity.xml"
	veeamAgentSubstr  = "APN/1.0 Veeam/1.0"
)

     *
     * @param <E> the element type of {@link ArrayBlockingQueue}
     * @param capacity the queue capacity
     * @return a new instance of {@link ArrayBlockingQueue}
     * @see ArrayBlockingQueue#ArrayBlockingQueue(int)
     */
    public static <E> ArrayBlockingQueue<E> newArrayBlockingQueue(final int capacity) {
        return new ArrayBlockingQueue<>(capacity);
    }

    /**

### Decommissioning without args lists all pools

```
λ mc admin decommission status alias/
┌─────┬─────────────────────────────────┬──────────────────────────────────┬────────┐
│ ID  │ Pools                           │ Capacity                         │ Status │
│ 1st │ http://minio{1...2}/data{1...4} │ 439 GiB (used) / 561 GiB (total) │ Active │
│ 2nd │ http://minio{3...4}/data{1...4} │ 329 GiB (used) / 421 GiB (total) │ Active │

reconstruct missing or corrupted data. MinIO uses Reed-Solomon code to shard objects into variable data and parity blocks. For example, in a 12 drive setup, an object can be sharded to a variable number of data and parity blocks across all the drives - ranging from six data and six parity blocks to ten data and two parity blocks.

By default, MinIO shards the objects across N/2 data and N/2 parity drives. Though, you can use [storage classes](https://github.com/minio/minio/tree/master/docs/erasure/storage-class)...

		version == xlMetaVersion100) &&
		format == xlMetaFormat)
}

// Verifies if the backend format metadata is sane by validating
// the ErasureInfo, i.e. data and parity blocks.
func isXLMetaErasureInfoValid(data, parity int) bool {
	return ((data >= parity) && (data > 0) && (parity >= 0))
}

//msgp:clearomitted

//go:generate msgp -file=$GOFILE -unexported

// A xlMetaV1Object represents `xl.meta` metadata header.

    MinMaxPriorityQueue<Integer> queue = MinMaxPriorityQueue.create();
    assertEquals(11, queue.capacity());
    checkUnbounded(queue);
    checkNatural(queue);
  }

  public void testCreation_comparator() {
    MinMaxPriorityQueue<Integer> queue = MinMaxPriorityQueue.orderedBy(SOME_COMPARATOR).create();
    assertEquals(11, queue.capacity());
    checkUnbounded(queue);
    assertSame(SOME_COMPARATOR, queue.comparator());
  }

        assertEquals(500, info.free);
        assertEquals(100, info.sectPerAlloc);
        assertEquals(512, info.bytesPerSect);
        assertEquals(1000L * 100 * 512, info.getCapacity(), "Capacity calculation should be correct");
        assertEquals(500L * 100 * 512, info.getFree(), "Free space calculation should be correct");
    }

    /**

)

var (
	configRRSParityMD = NewGaugeMD(configRRSParity,
		"Reduced redundancy storage class parity")
	configStandardParityMD = NewGaugeMD(configStandardParity,
		"Standard storage class parity")
)

// loadClusterConfigMetrics - `MetricsLoaderFn` for cluster config
// such as standard and RRS parity.
func loadClusterConfigMetrics(ctx context.Context, m MetricValues, c *metricsCache) error {

| `minio_cluster_health_capacity_raw_total_bytes`    | Total cluster raw storage capacity in bytes. <br><br>Type: gauge    |        |
| `minio_cluster_health_capacity_raw_free_bytes`     | Total cluster raw storage free in bytes. <br><br>Type: gauge        |        |
| `minio_cluster_health_capacity_usable_total_bytes` | Total cluster usable storage capacity in bytes. <br><br>Type: gauge |        |