func (er erasureObjects) DecomTieredObject(ctx context.Context, bucket, object string, fi FileInfo, opts ObjectOptions) error {
	if opts.UserDefined == nil {
		opts.UserDefined = make(map[string]string)
	}
	// overlay Erasure info for this set of disks
	storageDisks := er.getDisks()
	// Get parity and data drive count based on storage class metadata
	parityDrives := globalStorageClass.GetParityForSC(opts.UserDefined[xhttp.AmzStorageClass])