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APSDM016GD5AN-ACMW Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers |
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APSDM016GD5AN-ACMW Datasheet(HTML) 11 Page - List of Unclassifed Manufacturers |
11 / 23 page SATA-Disk Module 4 APSDMxxxxX5AN-ACMXX 10 © 2012 Apacer Technology Inc. Rev. 1.1 5.6 S.M.A.R.T. S.M.A.R.T. is an acronym for Self-Monitoring, Analysis and Reporting Technology, an open standard allowing disk drives to automatically monitor their own health and report potential problems. It protects the user from unscheduled downtime by monitoring and storing critical drive performance and calibration parameters. Ideally, this should allow taking proactive actions to prevent impending drive failure. Apacer devices use the standard SMART command B0h to read data out from the drive to activate our SMART feature that complies with the ATA/ATAPI-7 specifications. Based on the SFF-8035i Rev. 2.0 specifications, Apacer SMART defines vendor-specified SMART Attribute IDs (A0 ~ A5, and 0C). They represent Initial bad block count, Bad block count, Spare block count, Maximum erase count, Average erase count and Power cycle. When the Apacer SMART Utility running on the host, it analyzes and reports the disk status to the host before the device reaches in critical condition. 5.7 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. |
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