Article Number: 000147878
S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology; often written as SMART) is a health monitoring system for hard-drives and solid-state drives which has been internationally standardised.
The primary function of SMART is to detect and report various indicators of drive reliability, with the intent of anticipating imminent hardware failures, allowing the hardware to be replaced before failure and the integrity of the data to be maintained.
Dell EMC have collaborated with our hard-drive vendors in the interpretation of these values.
It has been found, whilst reviewing the SMART status of some enterprise hard-drives, high read and verify ECC (Error Correction Code) correction rates may be observed on some models. If these values are compared against other hard-drives, it may appear to indicate that some particular models of hard-drives have a much higher error rate than others which may report zero ECC corrections. In some cases this error rate will appear as hundreds of millions of ECC corrections and may increment rapidly as more I/O transactions occur.
An example of this situation is provided below. This example was gathered by running the command "smartctl -a /dev/sdX" under Linux OS.
Figure 1: Error Counter Log
If you have a specific query in relation to the health counters on a certain model of Enterprise HDD, please contact our support technicians who can work to obtain an answer from Dell EMC's engineering teams.
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