Hi Gavin, I think you might want to investigate your *power supply* ... On 04/13/2011 08:15 PM, Gavin Flower wrote: [snip /] > SMART Attributes Data Structure revision number: 10 > Vendor Specific SMART Attributes with Thresholds: > ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE > 1 Raw_Read_Error_Rate 0x000f 115 099 006 Pre-fail Always - 87918991 > 3 Spin_Up_Time 0x0003 099 097 000 Pre-fail Always - 0 > 4 Start_Stop_Count 0x0032 085 085 020 Old_age Always - 16014 > 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 > 7 Seek_Error_Rate 0x000f 072 060 030 Pre-fail Always - 20251386 > 9 Power_On_Hours 0x0032 097 097 000 Old_age Always - 2940 > 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 > 12 Power_Cycle_Count 0x0032 093 093 020 Old_age Always - 7999 SMOKING GUN ^^^^ I suspect your power supply is good enough to slowly spin up your drives and get them talking, but when you ask them to work hard, especially when writing, the PS voltage dips enough to reset the drive. Look up all the power consumption specs for all of your components, and add up the *peak* current requirements. Make sure your PS can handle it. HTH, Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
