Obliterase
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I have contacted the people at Obliterase and it seems like a good product.
If I understand it correctly, it will take some time, so bringing the machine back to the office would be better. I believe that servers will have to have the raid broken, and you have to obliterate each drive separately.
Anyone have an idea how I will bill for the time for this?
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This might be better suited as a per drive, as there is generally a few minutes to set up, then hours of waiting for it to work.
Factors include level of destruction.
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@technobabble said:
If I understand it correctly, it will take some time, so bringing the machine back to the office would be better. I believe that servers will have to have the raid broken, and you have to obliterate each drive separately.
This is always the case with drive destruction. A RAID controller, by definition, keeps any software from being able to securely wipe a drive. There cannot be an exception to this. The only way to get around this is either for the RAID controller to permit pass through (turn itself off) or to have the RAID controller itself do the destruction. No software can overcome the abstraction or encapsulation of the RAID controller.
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@scottalanmiller With the intention of learning more:
What would be kept if you setup a RAID zero array with all the drives and proceeded to run something like DBAN or DD /random?
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@MattSpeller said:
@scottalanmiller With the intention of learning more:
What would be kept if you setup a RAID zero array with all the drives and proceeded to run something like DBAN or DD /random?
Possibly nothing, potentially a lot. Because the RAID controller only promises to be able to read back you have the potential for things like a cache to completely undermine your good intentions. If you did enough random writes and reads and did it long enough yeah, but you could do this by installing other stuff over and over again too.
Things like DBAN have algorithms meant to ensure that the same spot on the disks gets carefully scrubbed in a specific way. A RAID controller interrupts that in unpredictable ways. You might be good or you might have erased nothing. Likely a lot is destroyed, but not as thoroughly as you had intended.
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@scottalanmiller Ok that makes more sense, thank you
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@scottalanmiller does this mean I need to pull the server drives and attach them to another workstation that doesn't have raid to scrub them?
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@technobabble said:
@scottalanmiller does this mean I need to pull the server drives and attach them to another workstation that doesn't have raid to scrub them?
Yes. You need a physical "scrubbing station" to do this effectively.
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I have a workstation that I can use, so the next question is really how to price the job.
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It's bench work, so rarely seen as hourly. Just figure out about how much of your time will really be spent and price from there.
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I had a station just for this,.. didn't do RAID.
Of course, Scrubbing only works if the drive works. if it's crashed.. skip it. It is bench work.. again, set a 'shop fee' with a percentage higher for more secure erasing.
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Can be handy to have one of those hot swap USB drive port things.
