today found this article : http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/std_adp.php?p_admin=1&p_faqid=913&p_created=1047068027 (http://support.wdc.com/raid.asp) Problem: WD EIDE 180GB and 200GB drives are dropped from an IDE RAID configuration after several days or weeks of operation. Solution: The problem is a result of a feature that reduces idle acoustic noise in desktop drives. This feature can cause a timeout in a IDE RAID environment. To disable the feature, you can run a simple Western Digital utility to turn off a single bit in the drive?s run-time configuration. Disabling of this feature will NOT impact normal system operations in a RAID environment. No firmware or hardware changes are required. can this 'single bit' also be set with an linux util ? (like hdparm?) - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
