Hi,
The hard disk with 
        model num: "HITACHI HTS541616J9SA00"
        model rev: "SB4IC7UP"

is causing NCQ errors and should be blacklisted.
Currently the blacklist for Hitachi hard disks includes

        { "HITACHI HDS7250SASUN500G*", NULL,    ATA_HORKAGE_NONCQ },
        { "HITACHI HDS7225SBSUN250G*", NULL,    ATA_HORKAGE_NONCQ },
...
        /* Blacklist entries taken from Silicon Image 3124/3132
           Windows driver .inf file - also several Linux problem reports */
        { "HTS541060G9SA00",    "MB3OC60D",     ATA_HORKAGE_NONCQ, },
        { "HTS541080G9SA00",    "MB4OC60D",     ATA_HORKAGE_NONCQ, },
        { "HTS541010G9SA00",    "MBZOC60D",     ATA_HORKAGE_NONCQ, },


http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob_plain;f=drivers/ata/libata-core.c;hb=HEAD

The same hard disk causing NCQ errors to different users,
http://www.nabble.com/hdparm--B-1-and-Load_Cycle-on-Hitachi-HTS541616J9SA00-td14702758.html
https://bugs.edge.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/137470


Could you please add the entry
        { "HITACHI HTS541616J9SA00",    NULL,     ATA_HORKAGE_NONCQ, },

Simos


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