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You are here: Knowledge Base > HyperDrive COLORSPACE
What is S.M.A.R.T. and what does the numbers in Diag. Info mean?
Last Updated 1/26/2009
COLORSPACE features S.M.A.R.T. hard drive monitoring technology, which monitors the hard drive for potential problems.

S.M.A.R.T. stands for Self-Monitoring Analysis and Reporting Technology.

Diag. Info (found at More>Tools>Drive Tools>Information) refers to the hard drive's S.M.A.R.T. Diagnostic Information. Every number represents something.

The 1st number is 'Current Pending Sector Count,' or the current number of unstable sectors waiting to be remapped.

The 2nd number is 'Raw Read Error Rate,' or the number of uncorrected read errors. More errors mean the condition of the disk surface is worsening.

The 3rd number is 'Seek Error Rate," or the number of seek errors. When the hard drive is reading data, it will position the drive head in the appropriate place on a disk platter. If the mechanical positioning system fails, a seek error arises. More seek errors indicate the conditions of the disk surface and disk mechanical subsystem are worsening.

The 4th number is 'UltraDMA CRC Error Count," or the number of errors found in data transfer in Ultra-DMA (UDMA-33,66,100) mode by CRC (control sum). It is a method of error control in data transfer operations for high-speed transfer modes.

The 5th number is 'Power-Off Retract Count," or the number of emergency unload events. A 2.5" hard drive can undergo about 20,000 emergency unloads before it begins to fail.

For more information on S.M.A.R.T. see:
http://en.wikipedia.org/wiki/Self-Monitoring,_Analysis,_and_Reporting_Technology

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