for index := range onlineDisks {
		g.Go(func() error {
			if onlineDisks[index] == nil {
				return nil
			}
			return onlineDisks[index].Delete(ctx, bucket, pathJoin(object, dataDir), DeleteOptions{
				Recursive: true,
			})
		}, index)
	}

	return reduceWriteQuorumErrs(ctx, g.Wait(), objectOpIgnoredErrs, writeQuorum)
}

	for _, disk := range er.getDisks() {
		if disk == nil {
			continue
		}
		wg.Add(1)
		go func(disk StorageAPI) {
			defer wg.Done()
			disk.Delete(ctx, bucket, prefix, DeleteOptions{
				Recursive: true,
				Immediate: false,
			})
		}(disk)
	}
	wg.Wait()
}

// Remove the old multipart uploads on the given disk.