format = batchExpireFormat
			version = batchExpireVersion
			jobTyp = string(job.Type())
			ri.Version = batchExpireVersionV1
		default:
			return errInvalidArgument
		}
		if serverDebugLog {
			console.Debugf("%s: persisting info on drive: threshold:%s, %s:%#v\n", jobTyp, now.Sub(ri.LastUpdate), jobTyp, ri)
		}
		ri.LastUpdate = now

		data := make([]byte, 4, ri.Msgsize()+4)

		// Initialize the header.