g := errgroup.WithNErrs(len(disks))
	for index := range disks {
		g.Go(func() (err error) {
			if disks[index] == nil {
				return errDiskNotFound
			}
			rf, err := disks[index].ReadXL(ctx, bucket, object, readData)
			if err != nil {
				return err
			}
			rawFileInfos[index] = rf
			return nil
		}, index)
	}

	return rawFileInfos, g.Wait()
}