The storage type for this row. Rows having the value 'permanent' need not allow write-access to any columnar objects in the row. NOTE: This node is supported only on the CE8855H-SAN, CE6885-SAN, CE9855, CE9865, CE8865, CE8875, CE6885-LL (low latency mode), CE8851-32CQ8DQ-P, CE8851K, CE8850-HAM, CE6820H, CE6820H-K, CE6820S, CE8865-SAN, CE6860-SAN, CE6855-48XS8CQ, CE6855-48T8CQ, CE6885-LL (standard forwarding mode), CE6885H, CE6885, CE6885-T, CE6863E-48S8CQ, CE6885L, CE6863H, CE6863H-K, CE6881H, CE6881H-K, CE8855, CE8855H, CE8851-32CQ4BQ, CE8850-SAN, CE6866, CE6866K and CE6860-HAM.