|Unabhängige Ereignisse. |Das war war hier ja von Beginn an der Tenor, bei der |Bildung eines Backup-Systems. |Auch ich selbst nutze ein solches Backup-System.
|Bei dem Beispiel oben betrachte ich den Zeitraum |nach dem flachen Teil der Badewannenkurve. |Dort beginnen ja die Ausfälle wegen Verschleiß.
|Model Family: Western Digital RE2 Serial ATA |Device Model: WDC WD5000YS-01MPB0
|ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE | 1 Raw_Read_Error_Rate 0x000f 200 200 051 Pre-fail Always - 0 | 3 Spin_Up_Time 0x0003 210 206 021 Pre-fail Always - 6500 | 4 Start_Stop_Count 0x0032 094 094 000 Old_age Always - 6577 | 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 | 7 Seek_Error_Rate 0x000f 200 200 051 Pre-fail Always - 0 | 9 Power_On_Hours 0x0032 051 051 000 Old_age Always - 35799 | 10 Spin_Retry_Count 0x0013 100 100 051 Pre-fail Always - 0 | 11 Calibration_Retry_Count 0x0012 100 100 051 Old_age Always - 0 | 12 Power_Cycle_Count 0x0032 095 095 000 Old_age Always - 5356 |194 Temperature_Celsius 0x0022 253 253 000 Old_age Always - 53 |196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 |197 Current_Pending_Sector 0x0012 200 200 000 Old_age Always - 0 |198 Offline_Uncorrectable 0x0010 200 200 000 Old_age Offline - 0 |199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 |200 Multi_Zone_Error_Rate 0x0009 200 200 051 Pre-fail Offline - 0
|Model Family: Western Digital RE3 Serial ATA |Device Model: WDC WD1002FBYS-01A6B0
|ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE | 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 | 3 Spin_Up_Time 0x0027 253 253 021 Pre-fail Always - 1300 | 4 Start_Stop_Count 0x0032 096 096 000 Old_age Always - 4386 | 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 | 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 | 9 Power_On_Hours 0x0032 059 059 000 Old_age Always - 30561 | 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 | 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 | 12 Power_Cycle_Count 0x0032 096 096 000 Old_age Always - 4352 |192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 631 |193 Load_Cycle_Count 0x0032 199 199 000 Old_age Always - 4386 |194 Temperature_Celsius 0x0022 104 096 000 Old_age Always - 46 |196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 |197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 |198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0 |199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 |200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 0
Es ist folglich extrem unwahrscheinlich, daß zwei Festplatten gleichzeitig defekt gehen, so daß sie ab sofort keinen Datenverkehr mehr erlauben.