of common SLA here original cluster had 1024 drives with 16 drives per erasure set with default parity of '4', second pool is expected to have a minimum of 8 drives per erasure set to match the original cluster SLA (parity count) of '4'. '12' drives stripe per erasure set in the second pool satisfies the original pool's parity count.

Refer to the sizing guide with details on the default parity count chosen for different erasure stripe sizes [here](https://github.com/minio/minio/blob/mas...

					if err != nil {
						fmt.Println(err)
						continue
					}
					if m.objSize != otherM.objSize {
						continue
					}

					// If data+parity matches, combine.
					if m.parity == otherM.parity && m.data == otherM.data {
						for k, v := range m.parityData {
							if otherM.parityData[k] == nil {
								continue
							}
							for i, data := range v {

import (
	"encoding/json"
	"log"
	"os"
	"path/filepath"

	"github.com/klauspost/compress/zip"
	"github.com/minio/cli"
)

var fmtGenFlags = []cli.Flag{
	cli.IntFlag{
		Name:  "parity",
		Usage: "specify erasure code parity",
	},
	cli.StringFlag{
		Name:  "deployment-id",
		Usage: "deployment-id of the MinIO cluster for which format.json is needed",
	},
	cli.StringFlag{
		Name:   "address",

	object6 := "object6"
	metadata6 := make(map[string]string)
	metadata6["x-amz-storage-class"] = storageclass.STANDARD
	globalStorageClass.Update(storageclass.Config{
		Standard: storageclass.StorageClass{
			Parity: 4,
		},
		RRS: storageclass.StorageClass{
			Parity: 2,
		},
	})

			}
		}
	}
}

// Benchmarks

func benchmarkErasureEncode(data, parity, dataDown, parityDown int, size int64, b *testing.B) {
	setup, err := newErasureTestSetup(b, data, parity, blockSizeV2)
	if err != nil {
		b.Fatalf("failed to create test setup: %v", err)
	}
	erasure, err := NewErasure(context.Background(), data, parity, blockSizeV2)
	if err != nil {
		b.Fatalf("failed to create ErasureStorage: %v", err)
	}

func erasureSelfTest() {
	// Approx runtime ~1ms
	var testConfigs [][2]uint8
	for total := uint8(4); total < 16; total++ {
		for data := total / 2; data < total; data++ {
			parity := total - data
			testConfigs = append(testConfigs, [2]uint8{data, parity})
		}
	}
	got := make(map[[2]uint8]map[ErasureAlgo]uint64, len(testConfigs))
	// Copied from output of fmt.Printf("%#v", got) at the end.

		t.Fatalf("Unable to format drives for erasure, %s", err)
	}

	ep := PoolEndpoints{Endpoints: endpoints}

	parity, err := ecDrivesNoConfig(16)
	if err != nil {
		t.Fatalf("Unexpected error during EC drive config: %v", err)
	}
	if _, err := newErasureSets(ctx, ep, storageDisks, format, parity, 0); err != nil {
		t.Fatalf("Unable to initialize erasure")
	}
}

Refer to sizing guide for more understanding on default values chosen depending on your erasure stripe size [here](https://github.com/minio/minio/blob/master/docs/distributed/SIZING.md). Parity settings can be changed using [storage classes](https://github.com/minio/minio/tree/master/docs/erasure/storage-class).

### Consistency Guarantees

	tests := []struct {
		name   int
		data   int
		parity int
		want   bool
	}{
		{1, 5, 6, false},
		{2, 5, 5, true},
		{3, 0, 5, false},
		{3, -1, 5, false},
		{4, 5, -1, false},
		{5, 5, 0, true},
		{6, 5, 0, true},
		{7, 5, 4, true},
	}
	for _, tt := range tests {
		if got := isXLMetaErasureInfoValid(tt.data, tt.parity); got != tt.want {

		if n == 0 && total != 0 {
			// Reached EOF, nothing more to be done.
			break
		}

		// We take care of the situation where if n == 0 and total == 0 by creating empty data and parity files.
		blocks, err = e.EncodeData(ctx, buf[:n])
		if err != nil {
			return 0, err
		}

		if err = writer.Write(ctx, blocks); err != nil {
			return 0, err
		}

		total += int64(n)
		if eof {