The estimation of dependency SSD wear level and write speed on overprovision and block size

This paper is devoted to estimation of SSD write amplification dependency on $R$-overprovision and $N$-number of sectors in a block. Garbage collector uses greedy algorithm.
More precise formula than in [1] is obtained because it does not depend on $N \to \infty$ assumption. Proved that for fixed over provisioning the write amplification is monotonic increasing function of $N$.