If you purchase a MacBook Air, newer MacBook Pro with Retina display or an ultrabook these days and chances are the storage is a solid-state drive (SSD). Compared to traditional magnetic drives that have spinning platters and floating heads, SSDs have no moving parts. Of course being a newer technology, SSDs have had a much higher cost per megabyte compared to standard hard drives, but with prices falling and their significant advantages, they may now be worth looking at for your storage needs.
Solid State Drive (SSD) technology is taking the mobile computing world by storm. The performance advantages of SSD technology over traditional Hard Disk Drives (HDD) are substantial. To demonstrate just how much a Solid State Drive can improve a laptop’s performance, we put a 2010 MacBook Air (with a Solid State Drive) against a much more powerful 2011 MacBook Pro (with a Hard Disk Drive).
The advantages of the Solid State Drives are not just faster boot times, applications loading faster and less waiting around, they are also more durable. Solid State Drives are basically flash-drives and they have airtight construction and no moving parts which makes them ideal for mobile computing.
You will pay a premium for SSD technology, but prices are dropping and in the near future most laptops will have Solid State Drives.