Serial ATA Flash Drive

APS1845xxxx-ACMX

10

©2012 Apacer Technology Inc.

Rev. 1.3

lifespan. The process to erase will not be stopped until finished while encountering power failure, and will be

continued when power is back on.

3.6

TRIM

Made of millions of NAND flash cells, SSD can be written into groups called pages in 4K size generally, but can

only be erased in larger groups called blocks of 128 pages or 512KB. These stipulations are partially the

source of many performance issues. Until an address gets used again, the SSD has to keep track of every last

bit of data that’s written on it. The ATA-TRIM instruction tilts the balance in favor of the SSD. TRIM addresses a

major part of the performance degradation issue over time that plagues all SSDs. A TRIM enabled drive

running an OS with TRIM support will stay closer to its peak performance over time.