61Latitude E6500, E6400 Reviewer‘s GuidePrimary Storage*See important information at end of documentSize, type, speed E6500,E6400 E6400 ATG80GB* SATA 5400 RPM x x80GB * SATA 7200 RPM x x160GB * SATA 5400 RPM x x160GB* SATA 7200 RPM x x250GB* SATA 7200 RPM x x120GB* SATA Full Disk Encryption 5400 RPM x x160GB* SATA Full Disk Encryption 7200 RPM x x64GB* Solid State Ultra Performance x x64GB* Solid State Mobility x x128GB* Solid State Mobility x x120GB* Ruggedized SATA 5400RPM xLatitude E6500, E6400, E6400 ATG Technical GuidebookSpecialty Storage OptionsFull Disk Encryption hard drives provide hardware encrypted data protection whichcan be activated within a few seconds centrally and can be much safer than softwarebased encryption.Ultra Performance Solid State Drive delivers the best in solid state technology withextreme performance, highest reliability rating1 and longest lifecycle. These drivesoutperform even the fastest desktop SATA 10,000 rpm hard drives,.Mobility Solid State Drives offer highly reliable and durable, storage, while tradingextreme performance for high capacities and a low price. The Mobility SSD is betterperforming than any standard notebook hard drive, but not as high as Ultra PerformanceSSD.Intel Rapid Recover Technology (IRRT)The IRRT feature uses RAID 1 mirroring functionality to copy data from the system primarydrive to an external eSATA recovery drive. This gives the user additional security as their harddisk contents can be backed up at any time when connected to an external eSATA drivethrough the system eSATA port or through the E-Port Docking system. Data recovery is madeeasy with the IRRT feature.1 Based on Mean Time Between Failure (MTBF) of 2M for Ultra Performance SSD vs. 1M for Mobility SSD and 550K for standardDell 2.5” HDD, per Dell HDD spec.