Changes between Version 12 and Version 13 of TocDoc


Ignore:
Timestamp:
Aug 11, 2010, 10:08:48 PM (14 years ago)
Author:
Gabriele Pohl
Comment:

recommend to focus the normalized values

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  • TocDoc

    v12 v13  
    7676
    7777== SMART Attributes ==
    78 ''Different vendors, different interpretation..''
    79 The raw SMART attributes (temperature, power-on lifetime, and so on) are stored in vendor-specific structures. Sometime these are strange. Hitachi disks (at least some of them) store power-on lifetime in minutes, rather than hours. IBM disks (at least some of them) have three temperatures stored in the raw structure, not just one. And so on.[[BR]]
     78
    8079If you find strange output, or unknown attributes, please look in the below listed pages with vendor specific info.[[BR]]
    8180When you don't find an answer to your question there, send an email to [http://lists.sourceforge.net/mailman/listinfo/smartmontools-support smartmontools-support] and we'll help you try and figure it out.
    8281
    83 Smartmontools have a new EXPERIMENTAL feature to log ''Attributes Raw Data''
     82=== RAW Values ===
     83
     84''Different vendors, different interpretation..''
     85The RAW values of SMART attributes (temperature, power-on lifetime, and so on) are stored in vendor-specific structures.
     86Sometime these are strange. Hitachi disks (at least some of them) store power-on lifetime in minutes, rather than hours.
     87IBM disks (at least some of them) have three temperatures stored in the raw structure, not just one. And so on.[[BR]]
     88
     89Bruce Allen said on [https://sourceforge.net/mailarchive/message.php?msg_id=Pine.LNX.4.63.0708310141280.17169%40trinity.phys.uwm.edu smartmontools-support list] (2007-08-31): ''The raw values for certain Attributes have vendor-specific meanings and are hard to interpret unless you know exactly how the vendor uses them on that specific disk model. The bit pattern might be a mix of flags, counters, and bitmasks, for example, leading to large and strange numbers. I wouldn't worry about the raw values very much. The normalized values (VALUE/WORST/THRESH) should have a sensible interpretation.''
     90
     91Nevertheless smartmontools have a new EXPERIMENTAL feature to log ''Attributes Raw Data''
    8492in external files. See option [http://smartmontools.sourceforge.net/man/smartd.8.html#lbAG --attributelog]
    8593in smartd manpage and read the [wiki:attributelog authors instructions].