Sandisk business class z400s 256gb 25 ssd key features vertically integrated validation low power with devslp support for green fanless designs 32gb 256gb capacities shock resistant the sandisk z400s is a cost effective ssd designed to replace hdds in sata sas pcie computing platforms on par with hdd pricing it can outperform hdds by a factor of 20 while providing 5 times the reliability at 120th the power consumption the z400s is highly versatile and can accommodate a wide r