1. SSD Technology
• A Solid-State Disk (SSD) is a data storage device that
emulates a hard disk drive (HDD)
• NAND Flash SSD’s are essentially arrays of flash memory
devices which include a controller that electrically and
mechanically emulate, and are software compatible with
magnetic HDD’s

2. SSD vs. HDD Issues
Q. SSD access times are great, but write speeds are a step
back, so why would I want an SSD?
A. Small reads (4k) are 20X faster than similar reads on an
HDD.
Q. SSD write performance still leaves much to be desired?
A. This is where SSD manufacturers differentiate their
product.
Q. I heard that NAND performance is degrading as a result of
die shrinks and increases in bits per cell. Won’t this slow
SSD performance gains?
A. Correct. Write performance problems are not going away.