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

E. A. Snegova^a, P. A. Aliseichik^a, D. V. Alekseev<sup>b

a</sup> Lomonosov Moscow State University
^b Lomonosov Moscow State University, Faculty of Mechanics and Mathematics

Abstract: 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 $N$.

Keywords: Write amplivication, overprovision, SSD, garbage collector.