storageDisks := er.getDisks()
	// Get parity and data drive count based on storage class metadata
	parityDrives := globalStorageClass.GetParityForSC(opts.UserDefined[xhttp.AmzStorageClass])
	if parityDrives < 0 {
		parityDrives = er.defaultParityCount
	}
	dataDrives := len(storageDisks) - parityDrives

	// we now know the number of blocks this object needs for data and parity.
	// writeQuorum is dataBlocks + 1

			return nil, err
		}
	}

	userDefined := cloneMSS(opts.UserDefined)
	if opts.PreserveETag != "" {
		userDefined["etag"] = opts.PreserveETag
	}
	onlineDisks := er.getDisks()

	// Get parity and data drive count based on storage class metadata
	parityDrives := globalStorageClass.GetParityForSC(userDefined[xhttp.AmzStorageClass])
	if parityDrives < 0 {
		parityDrives = er.defaultParityCount
	}

}

// ObjectInternalInfo contains some internal information about a given
// object, it will printed in listing calls with enabled metadata.
type ObjectInternalInfo struct {
	K int // Data blocks
	M int // Parity blocks
}

// Object container for object metadata
type Object struct {
	Key          string
	LastModified string // time string of format "2006-01-02T15:04:05.000Z"
	ETag         string
	Size         int64