Re: Newbie question on mdadm

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Tim:
>> Though it can be surprising to find out how they've used a drive. 
>> Such as a 4TB WD MyCloud that provides that 4TB using two 2TB
>> partitions on the *same* drive, using RAID to make them one 4TB.  I
>> dunno why they'd do it that way.

George N. White III:
> If you control the hardware you get more options.  I've opened up
> dozens of older drives to destroy platters, and they all had one
> actuator shared by all the heads.   Maybe the WD drives have two
> actuators, so are effectively 2x2TB drives on one case.

Interesting.  I hadn't considered that reason (although the drive does
look identical to any other hard drive in size and shape).  It's quite
a quiet drive, too, so it doesn't sound like two mechanisms.  Not
that's a very scientific assessment.

I just guessed they were doing something oddball.  Like a workaround
for a maximum partition size their software could handle.  One day, if
I get the chance again, I'll see if I can jot down the drive model
info.
 
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