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Date:      Fri, 11 Aug 2006 23:49:37 +0200
From:      "O. Hartmann" <ohartman@mail.uni-mainz.de>
To:        freebsd-questions@freebsd.org
Subject:   smartctl: Raw_Read_Error_Rate very high
Message-ID:  <44DCFB71.6000708@mail.uni-mainz.de>

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Dear Sirs,

watching from time to time via smartctl my new drives (HITACHI  
HDT722525DLA380 T7K250 250 GB SATA II drives) I found this line on one 
drive (ad4, the 'clean' one is ad4):
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      
UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000b   100   100   016    Pre-fail  
Always       -       65536


The RAW value of this entry seems to be very high, on the other drives, 
it is zero.

I detected some performance issues within last days, both drives are 
connected as ar0 RAID0 volume to the nForce4 chipset of the ASUS 
A8N32-SLI mainboard.

Any suggestions?

Thanks in advance,

oh



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