NVMeoF is the latest extension of NVMe for remote storage access which allows remote access to NVMe controllers through high-speed RDMA, FC, and TCP networks. NVMe over TCP (NoT) can build on the basis of large-scale common network infrastructure in datacenters and standard TCP/IP software protocol stack, enabling a wide availability compared with RDMA-enabled specific network infrastructure for NVMe-overRDMA. However, the processing of read/write I/O at the host and target prominently shows significantly different characteristics and requirements, where one side sends the NVMeoF instruction of the request, while the other side sends the requested data. The existing NoT implementation can not meet the different characteristics of requests in the datacenter, which eventually results in the I/O performance being limited by the common processing pipeline and sending strategy. In this paper, we propose RNoT, a transformable queue that can meet the differentiated processing scheme of read or write request characteristics respectively in NoT implementation. Specifically, RNoT defines a switchable working attribute and separates resources for read and write I/O to achieve intra-queue long-term exclusivity, delivers read and write requests into other RNoT queue pairs to achieve inter-queue I/O scheduling, and transfers request command and data with targeted approaches to achieve short and long flow optimization. We implemented RNoT in Linux Kernel and evaluated it using realistic benchmarks and applications. Our experimental results demonstrate that RNoT can achieve 30.39% and 29.27% lower latency than i10 and NoT respectively, increase IOPS by up to 41.34% than NoT on average, thus RNoT can effectively optimize the read and write I/O performance in NoT with dedicated processing scheme.