This is not the first time the President has been criticized for taking a vacation during an urgent situation. During Obama's first term in 2009, Obama addressed the Underwear Bomber situation on television from Hawaii. On the other hand, in 2012 Obama flew back to the mainland midway through his vacation in order to deal with the fiscal cliff negotiations. This year critics cited the recent Sony hack attack as a reason for the president to delay his trip.
SSD (solid-state drive) A solid-state drive (SSD) is a nonvolatile storage device that stores persistent data on solid-state flash memory. Solid-state drives actually aren't hard drives in the traditional sense of the term, as there are no moving parts involved.
Hard drive. A hard disk drive (sometimes abbreviated as Hard drive, HD, or HDD) is a non-volatile memory hardware device that permanently stores and retrieves data on a computer. A hard drive consists of one or more platters to which data is written using a magnetic head, all inside of an air-sealed casing.