Patent attributes
A data storage RAID architecture system and method that daisy-chains multiple SATA disk drive storage elements to allow a single host bus adapter (HBA) to view the daisy-chain as one logical SATA disk drive is disclosed. The system/method may be broadly described as comprising a pass-thru disk drive controller (PTDDC) further comprising a pass-thru input (PTI) port, disk drive interface (DDI) port, and pass-thru output (PTO) port. The PTDDC intercepts and translates PTI port input to the requirements of a SATA disk drive connected to the DDI. Each PTDDC may be daisy-chained to other PTDDCs to permit a plethora of SATA drives to be associated with a given HBA, with the first PTDDC providing a presentation interface to the HBA integrating all SATA disk drive storage connected to the PTDDCs. Rack mounting of PTDDC-enabled SATA disk drives enables creation of inexpensive dynamically expandable petabyte-class RAID storage arrays.
