![]() To modify data, the SSD actually has to read the information from the old location, modify it in memory, and then write the modified data to new, zeroed pages. This means that overwriting data directly is impossible. Another limitation is that writes can only be performed on pages that have been completely zeroed (all bits set to 0). However, they can only erase data at the block level. SSDs can read and write to pages individually. Pages, in turn, are grouped together in larger units called blocks. Data Unitsĭata on SSDs is written and read in units of a fixed size known as pages. To better understand the problems that TRIM solves, it helps to know a few things about how SSDs store and manage their data. In this guide, we will briefly discuss how SSDs and TRIM work and then demonstrate how to enable periodic TRIM on a variety of Linux distributions. In almost all cases it provides the same benefits of continuous TRIM without the performance hit. This configures the operating system to TRIM the drive on a schedule instead of as a necessary component of regular file operations. A gentler alternative is to configure periodic TRIM. While it is possible to enable continuous TRIM in Linux, this can actually negatively affect performance because of the additional overhead on normal file operations. ![]() TRIM can have a major impact on the device’s performance over time and its overall longevity. This allows the SSD’s internal systems to better manage wear leveling and prepare the device for future writes. The TRIM command is an operation that allows the operating system to propagate information down to the SSD about which blocks of data are no longer in use. Due to the architecture of SSDs, or solid state drives, continuous use results in degraded performance if not accounted for and mitigated. ![]()
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