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HDD addressing...

 
Dave Cast
Frequent Advisor

HDD addressing...

I have noticed that LUNPATH has the WWID number in it, for example:

Lunpath
0/4/1/0.0x500000e016cd9e72.0x0

has the Wwid of:
0x500000e016cd9e70

why is everything but the last digit (and the legacy hardware path at the beginning) the same?

Also where is the WWID stored on the drive? Is it 'hardcoded' like a MAC address? or is it written to the drive media and could be changed?
Today is different and tomorrow the same.