Garbage collection manages and maintains the available storage space, handling the disparity between the erase unit size (block) and the read/write unit size (page). An internal SSD housekeeping operation known as garbage collection helps to streamline the process. But, before any data can be written or programmed to the SSD, an entire block of data that is no longer needed must be erased. NAND flash-based SSDs read and write data in units known as pages, and in a typical SSD, 128 pages constitute a single data block. The T13 Technical Committee of the International Committee for Information Technology Standards (INCITS) has incorporated the TRIM command into the ATA standard. The DEALLOCATE operation provides a similar capability in the nonvolatile memory express ( NVMe) command set for Peripheral Component Interconnect Express SSDs. UNMAP is the comparable Small Computer System Interface ( SCSI) command for use with SAS SSDs.
Trimforce vs trim enabler serial#
TRIM, which is not an acronym, is available for SSDs that support the Serial ATA ( SATA) interface.
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The use of TRIM can improve the performance of writing data to SSDs and contribute to longer SSD life. SSD TRIM is an Advanced Technology Attachment (ATA) command that enables an operating system to inform a NAND flash solid-state drive ( SSD) which data blocks it can erase because they are no longer in use.