loadRebalanceMetaRPC           = grid.NewSingleHandler[*grid.MSS, grid.NoPayload](grid.HandlerLoadRebalanceMeta, grid.NewMSS, grid.NewNoPayload)
	loadSvcActRPC                  = grid.NewSingleHandler[*grid.MSS, grid.NoPayload](grid.HandlerLoadServiceAccount, grid.NewMSS, grid.NewNoPayload).IgnoreNilConn()

	for i, disk := range onlineDisks {
		if disk == nil {
			continue
		}
		if disk.IsOnline() {
			buf := grid.GetByteBufferCap(int(erasure.ShardFileSize(data.Size())) + 64)
			inlineBuffers[i] = bytes.NewBuffer(buf[:0])
			defer grid.PutByteBuffer(buf)
			writers[i] = newStreamingBitrotWriterBuffer(inlineBuffers[i], DefaultBitrotAlgorithm, erasure.ShardSize())
		}
	}