Raid controlled semiconductor storage device

A PCI-Express type RAID controlled semiconductor storage device (SSD), comprising:

• a SSD memory disk unit comprising a plurality of memory disks having with a plurality of volatile semiconductor memories;
• a RAID controller coupled to the SSD memory disk unit;
• a PCI-Express host interface unit which interfaces between the SSD memory disk unit and a host;
• a controller unit coupled to the RAID controller that adjusts a synchronization of a data signal communicated between the PCI-Express host interface unit and the SSD memory disk unit to control a data communication speed between the PCI-Express host interface unit and the SSD memory disk unit;
• and
• the controller unit comprising:
• a memory control module which controls data input/output of the SSD memory disk unit;
• a DMA control module which controls the memory control module to store data in the SSD memory disk unit or reads data from the SSD memory disk unit to provide the data to the host, according to an instruction from the host received through the PCI-Express host interface unit;
• a buffer which buffers data according to control of the DMA control module;
• and
• a synchronization control module for synchronizing a communication speed of a data signal.

A method for providing a RAID controlled semiconductor storage device (SSD), comprising:

• providing an SSD memory disk unit comprising a plurality of memory disks provided having a plurality of semiconductor memories;
• providing a RAID controller coupled to the SSD memory disk unit providing a host interface unit which interfaces between the SSD memory disk unit and a host;
• and
• providing a controller unit coupled to the RAID controller configured to adjust a synchronization of a data signal communicated between the host interface unit and the SSD memory disk unit to control a communication speed between the host interface unit and the SSD memory disk unit.