With the other disk, the SSD_Life_Left ATTRIBUTE stands out, but its Raw value of 0, indicating 0% life left, is unlikely for an apparently-healthy SSD unless it happen to be in peril (we will see in a few days), and if it reads "0% life has been used", also impossible for a worn hard disk (worn = used for more than a year). So this SSD has used 57% of its rewrite life-span, is it correct? Vendor Specific SMART Attributes with Thresholds: SMART Attributes Data Structure revision number: 1 Smartctl 6.2 r3812 (local build)Ĭopyright (C) 2002-13, Bruce Allen, Christian Franke, = START OF READ SMART DATA SECTION = However there is only one Unknown_Attribute whose RAW VALUE is between 1 and 100, thus I can only assume that is what we are looking for: $ sudo smartctl -A /dev/sda With the first SSD, it is not clear which field indicates wearout level. To demonstrate the problem here are the two examples. I could go on to find a third SSD, but I feel the fields are not standardized. information for a percentage field called Media_Wearout_Indicator, or other jargons indicators like Longterm Data Endurance - which don't exist - Yes I did check two SSDs, both lack these fields. Most Google search results would ask you to look up S.M.A.R.T. How do I check in Linux what the current health status of an SSD is? We all know that SSDs have a limited predetermined life span.
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