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Product Description Operation and Performance Characteristics
12 Zeus Ultra DMA Solid State Drives
1.7.6.2 Error Detection and Correction
The SSD’s error detection code and error correcting code (EDC/ECC) helps maintain
data integrity by allowing single or multiple bit corrections to the data stored in the drive’s
flash array. If the data in the flash array is corrupted due to aging or during the
programming process, EDC/ECC will compensate for the errors to ensure the delivery of
accurate data to the host computer. The EDC/ECC engine on the Zeus SSD is capable
of correcting up to two bytes in error and detecting up to 3 bytes in error. An extensive
retry algorithm is also implemented on all Zeus SSDs, so that single event disturbances
such as ESD or EMF occurring during a read operation can be readily overcome.
1.7.6.3 Built-in Self Test
During power-up, the SSD’s micro controller tests Zeus controller memory, and then
performs a back-end status check to verify proper flash memory controller operations. If
a fault condition is detected in the flash memory controller, the SSD’s status is reported
as failed.