1. Smart Media Card Experiments The performance of the smart media card is quite close to the spec’s definition. However, the program overhead and driver’s limit will downgrade the performance MeasureSpec TotalOriginal Code Overhead Remove TotalSpec Erase2s2ms2s2ms Write8s323us250us6.5s 200u s Read2s72us47us1.2s38us 528-Byte Page Read Operation - Random Access : 12µs(Max.) - Serial Page Access : 50ns(Min.) Fast Write Cycle Time - Program Time : 200µs(Typ.) - Block Erase Time : 2ms(Typ.) For 1024 blocks, that is 16 MB. Transfer TypeMaximum Transfer Size Control Endpoint 04KB Control (Other Endpoints) 64KB

2. FDBench - Disk Benchmark (Unit: KB/s ) ReadWriteRandom ReadRandom Write ATA Hard Disk43967372221342718830 SATA Hard Disk46800492541011227765 Genesys157127691157151960 Sandisk164918048159522514 Transcend1452811415142752030

3. NTFS – Random Write

4. NTFS Observations The metadata files will always allocated at the same LBA, and there are some frequently modified data such as $MFT, $LOG. When performing random write operations, NTFS will read before writing Design a SSD maintain policy for NTFS to overcome the side effects on flash memory.