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 Post subject: 600GB SAS HDD
PostPosted: March 26th, 2015, 10:19 
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Joined: March 11th, 2008, 4:35
Posts: 1046
Location: Bangladesh
ST3600057SS - 600GB SAS. Arrived 4 Pieces. RAID5

Tested, 2 drives with power failure, 2 drives is detecting but capacity ZERO (0.00GB).
My SAS HBA - 9211-8i

Worked on Power Failed Drive (PCB & ROM swap). The Drive gets detected but Capacity ZERO 0.00.

I am confused how all 4 Drives can be damaged at the same time? While 2 with power failure, 2 with others failure. Also, after restoring one Power failed drives, as I see the drives are detecting same ZERO, Now I have a question, is the SAS HBA responsible for showing Capacity ZERO?

Right now, I don't have option to arrange another SAS HBA (it requires to arrange from abroad, not possible locally). Can I use the same RAID controller they used on their server instead of HBA to inspect the drives individually?

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 Post subject: Re: 600GB SAS HDD
PostPosted: March 26th, 2015, 15:23 
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Joined: September 8th, 2009, 18:21
Posts: 13312
Location: Australia
How is the PCB on its own detected? If you isolate the preamp, does the drive report a capacity of 0?

If you upload detailed photos of the failed PCBs, I could help you analyse the result of the power surge or overvoltage, if that is what happened. If the surge clobbered the +5V supply, then that could have caused an internal fault.

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 Post subject: Re: 600GB SAS HDD
PostPosted: March 29th, 2015, 5:21 
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Joined: March 11th, 2008, 4:35
Posts: 1046
Location: Bangladesh
Yes, it's ZERO after isolating the PCB. Internal damage for sure. Either FW/Head. Already advised to customer to outsource the case abroad. As we don't have required technologies to deal SAS drives.

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