for j := range setDriveCount {
			disk := storageDisks[i*setDriveCount+j]
			newFormat := format.Clone()
			newFormat.Erasure.This = format.Erasure.Sets[i][j]
			if deploymentID != "" {
				newFormat.ID = deploymentID
			}
			hostCount[disk.Hostname()]++
			formats[i*setDriveCount+j] = newFormat
		}
		var once sync.Once
		for host, count := range hostCount {
			if count > wantAtMost {

func TestGetFormatErasureInQuorumCheck(t *testing.T) {
	setCount := 2
	setDriveCount := 16

	format := newFormatErasureV3(setCount, setDriveCount)
	format.Erasure.DistributionAlgo = formatErasureVersionV2DistributionAlgoV1
	formats := make([]*formatErasureV3, 32)

	for i := range setCount {
		for j := range setDriveCount {
			newFormat := format.Clone()
			newFormat.Erasure.This = format.Erasure.Sets[i][j]

	// only meant if you want to further optimize drive distribution.
	if setDriveCount > 0 {
		msg := fmt.Sprintf("Invalid set drive count. Acceptable values for %d number drives are %d", commonSize, setCounts)
		var found bool
		for _, ss := range setCounts {
			if ss == setDriveCount {
				found = true
			}
		}
		if !found {
			return nil, config.ErrInvalidErasureSetSize(nil).Msg(msg)

		eps := make([]string, s.setDriveCount)
		copy(eps, s.endpointStrings[setIndex*s.setDriveCount:setIndex*s.setDriveCount+s.setDriveCount])
		return eps
	}
}

func (s *erasureSets) GetEndpoints(setIndex int) func() []Endpoint {
	return func() []Endpoint {
		eps := make([]Endpoint, s.setDriveCount)
		copy(eps, s.endpoints.Endpoints[setIndex*s.setDriveCount:setIndex*s.setDriveCount+s.setDriveCount])
		return eps
	}

	if err = checkFormatErasureValues(formatConfigs, storageDisks, setDriveCount); err != nil {
		return nil, err
	}

	// All disks report unformatted we should initialized everyone.
	if shouldInitErasureDisks(sErrs) && firstDisk {
		logger.Info("Formatting %s pool, %v set(s), %v drives per set.",
			humanize.Ordinal(poolCount), setCount, setDriveCount)

		// Initialize erasure code format on disks

	fmtZipW := zip.NewWriter(zipFile)
	defer fmtZipW.Close()
	for _, pool := range pools { // for each pool
		setCount, setDriveCount := pool.SetCount, pool.DrivesPerSet
		format := newFormatErasureV3(setCount, setDriveCount)
		format.ID = deploymentID
		for i := range setCount { // for each erasure set
			for j := range setDriveCount {
				newFormat := format.Clone()
				newFormat.Erasure.This = format.Erasure.Sets[i][j]
				if deploymentID != "" {

	return nil
}

// defaultWQuorum write quorum based on setDriveCount and defaultParityCount
func (er erasureObjects) defaultWQuorum() int {
	dataCount := er.setDriveCount - er.defaultParityCount
	if dataCount == er.defaultParityCount {
		return dataCount + 1
	}
	return dataCount
}

// defaultRQuorum read quorum based on setDriveCount and defaultParityCount
func (er erasureObjects) defaultRQuorum() int {

				args:          list,
				setDriveCount: setDriveCount,
			})
		}
	case "v2":
		cf := config.ServerConfig{}
		cfReader.Seek(0, io.SeekStart)
		if err = yaml.Unmarshal(rd, &cf); err != nil {
			return err
		}

		pools = make([]poolArgs, 0, len(cf.Pools))
		for _, list := range cf.Pools {
			driveCount := list.SetDriveCount
			if setDriveCount > 0 {
				driveCount = setDriveCount
			}

			return err
		}
	case config.StorageClassSubSys:
		if objAPI == nil {
			return errServerNotInitialized
		}
		for _, setDriveCount := range objAPI.SetDriveCounts() {
			if _, err := storageclass.LookupConfig(s[config.StorageClassSubSys][config.Default], setDriveCount); err != nil {
				return err
			}
		}
	case config.CompressionSubSys:

	rawArr := make([]RawFileInfo, er.setDriveCount)
	metaArr := make([]FileInfo, er.setDriveCount)
	errs := make([]error, er.setDriveCount)
	for i := range errs {
		errs[i] = errDiskOngoingReq
	}

	done := make(chan bool, er.setDriveCount)
	disks := er.getDisks()

	ropts := ReadOptions{
		ReadData:         readData,