I have been searching and searching for some clue as to why all 4 HDDs in my SansDigital
MS4UM+ JBOD DAS enclosure lost their data simultaneously. All show X\: Not accessible.
No spanning, No Big JBOD, No RAID.
When I view all my HDDs, including these 4 in the external enclosure, in Disk Manager they are all HEALTHY, but the 4 are RAW and have 100% available free space.
I try one of the HDD directly connected to a Motherboards SATA connector and the results are the same. X\: Not accessible.
The SansDigital tech rep says:
"The unit is simply a pass-through device for the drives. The unit has a port-multiplier backplane and connects to your port-multiplier RocketRaid 622 eSATA controller card in order to detect all 4 HDD's with a single eSATA connection. You have confirmed that moving a drive from the unit to the motherboard on your computer nets the same results. This indicates that the corruption to the disk has occurred, and possible reasons why this happened may be from a loss of power or momentary disconnect or "ungraceful" power down of the unit while the data on the drives were still being accessed.
You may have a faulty cable, faulty eSATA card, faulty port on the unit, etc. The possible faulty component may have caused one of the scenarios mentioned above which caused your drives to be corrupted."
What likely happened?
Should I format these drives and copy data to them and be done?
Do I trust the MS4UM or the RocketRaid 622 anymore?
MS4UM+ JBOD DAS enclosure lost their data simultaneously. All show X\: Not accessible.
No spanning, No Big JBOD, No RAID.
When I view all my HDDs, including these 4 in the external enclosure, in Disk Manager they are all HEALTHY, but the 4 are RAW and have 100% available free space.
I try one of the HDD directly connected to a Motherboards SATA connector and the results are the same. X\: Not accessible.
The SansDigital tech rep says:
"The unit is simply a pass-through device for the drives. The unit has a port-multiplier backplane and connects to your port-multiplier RocketRaid 622 eSATA controller card in order to detect all 4 HDD's with a single eSATA connection. You have confirmed that moving a drive from the unit to the motherboard on your computer nets the same results. This indicates that the corruption to the disk has occurred, and possible reasons why this happened may be from a loss of power or momentary disconnect or "ungraceful" power down of the unit while the data on the drives were still being accessed.
You may have a faulty cable, faulty eSATA card, faulty port on the unit, etc. The possible faulty component may have caused one of the scenarios mentioned above which caused your drives to be corrupted."
What likely happened?
Should I format these drives and copy data to them and be done?
Do I trust the MS4UM or the RocketRaid 622 anymore?
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