SimpleTech ZeusIOPS manual Performance Characteristics

PERFORMANCE CHARACTERISTICS

ENDURANCE

The useful life of the flash media is limited by the number of write/erase operations that can be performed on the media. Typically, the write/erase cycles for flash media ranges between 100,000 and 300,000. To extend the life of the SSD, special Wear-Leveling and Bad-Block Mapping algorithms are integrated into the firmware, increasing the overall endurance rating of the drive to 2,000,000 Write/Erase cycles.

WEAR-LEVELING ALGORITHM

The dynamic wear-leveling algorithm guarantees that erase/write cycles are evenly distributed across all the flash memory block locations. Wear-leveling eliminates repeated writes to the same physical flash memory location, thereby preventing blocks from premature wear.

BAD-BLOCK MANAGEMENT

The bad-block management scheme will detect faulty blocks during operation. Bad blocks are flagged in a defect list. Blocks within the defect list are excluded and are never used for data storage.

DATA RETENTION

Data stored on ZeusIOPS SSDs will remain valid for ten (10) years without requiring power support. The unit can be stored at temperatures between -40oC and 70oC for extended periods without any occurrence of data degradation.

ERROR DETECTION AND CORRECTION

The Error Detection Code and Error Correcting Code (EDC/ECC) algorithm helps maintain data integrity by allowing single or multiple bit corrections to the data stored in the 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 drive is capable of correcting 8 random or 12 sequential bytes in 1,024 bytes. The possibility of undetected errors or incorrect correction is eliminated with additional CRC.

RELIABILITY

•DC power is maintained as specified in the product manual.

•Errors caused by host are excluded from rates.

•Errors from the same causes are counted as 1 block.

•Data stream is assumed random.

24 ZeusIOPS 3.5-Inch Fibre Channel Solid State Drive Product Manual Rev. 1.0