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11-06-2014 07:07 AM
11-06-2014 07:07 AM
I plan to add a new tape library (MSL4048) to a system using a new two port fibre HBA (SN1100E) with two fibre cables to each of two LTO-6 drives (6250). Someone has suggested that a currently spare port on an existing HBA could be used for this purpose, but I can’t even figure out how a single cable could physically connect to two drives unless perhaps they are daisy-chained? But even in that case I believe that the drives are supplied with only one of the two ports active? Is this why the drives have two ports?
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11-06-2014 09:06 AM
11-06-2014 09:06 AM
SolutionThe second port of the drive is for path redundancy between the drive and a switch using NPIV (read the user guide about this), IMHO not really useful ...
So in your case a single cable between a server port and a drive is enough - forget daisy chaining, this is not possible.
Hope this helps!
Regards
Torsten.
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11-06-2014 10:58 PM
11-06-2014 10:58 PM
Re: Can a single port of a HBA connect to two drives?
Thanks,
I’m one of those people who knows just enough to be dangerous, but I also struggle to differentiate between someone’s good theories and practical reality. I was trusting that what they told me was correct but could not see how it was physically possible without something else there like a fibre switch or daisy chaining.
I will go with your advice, than you.