SLC on the other end uses the cell on a single level, thus limiting the erase/write cycles and increasing the cell, thus the disk, lifespan. Also, writing multiple bits to single cell requires increased granularity of the cell layers, which leads to reduced performance vs SLC. This reduces the lifespan of the cell itself since more bits are being written to it, therefore more program/erase cycles. MLC NAND flash is a flash memory technology using multiple levels per cell to allow more bits to be stored using the same number of transistors.

There are 2 types of SSD disks: MLC or SLC (muti level cell or Single level Cell)Įach time data needs to be written, the SSD needs to erase data within a cell then write the new data.

With SSDs however, All flash devices can sustain a finite number of write and erase operations, also called program/erase cycles. The mechanical design of HDDs gives them more possibility to remain functional for a long time as there is no solid limit for how many writes or reads you can throw at them.

Sshd vs hdd benchmark