Due to limitations in data writing/erasing times of the Flash memory, SSD firmware is designed with wear-leveling technology so as to extend product life and service time. Also referred to as storage block writing/erasing leveling, the wear conditions of each block are leveled equally for the optimal extension of product life to meet system requirements.
If you want to copy a single file larger than 4GB to SSD, Please format the SSD to NTFS format. (Path: My Computer>Right click on the SSD->Select the Format option on the function menu>Select the NTFS from the File System item>Press Start button). You can refer to the Microsoft Help and Support Center: http://support.microsoft.com/kb/314463
SSD is an abbreviation for solid state disk. The conventional hard disk does not belong to "liquid" hard disk; solid state disk refers generally to solid state disk composed of NAND Flash. It has no mechanical structure and performs transfer via electronic signal compared to rotational disk design used in conventional hard disks. It utilizes characteristics of conventional NAND Flash and is composed of control unit and storage unit (FLASH chip). Data storage is achieved by the combination of the two units. Data is read and written in block writing and erasing manners. Thus, the efficiency of reading and writing relies on the design with respect to read-write technologies very much. It is advantageous of high speed, low power consumption, vibration resistance, high stability, low-temperature resistance etc.compared to current conventional hard disks.