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Binding LUNS

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Tim Medford
Valued Contributor

Binding LUNS

I am new to the model 12H autoraid array, but have years of experience with a Nike (sp620) array.

When you bind the LUNS on the Nike, depending on which controller you are connected to, the ownership of the LUN varies.

I just went through and bound some LUNS on autoraid now, and it appears that the "primary" controller owns them all?

Should I be alternately setting each controller to primary as I build the LUNS to balance the load? Or is it sufficient to just use primary/alternate paths in LVM when creating the volume groups/logical volumes?

Thanks a lot!
Insu Kim
Honored Contributor

Re: Binding LUNS


Unlike Nike, FC60, AutoRAID has no concept of ownership when you create LUNs.
From lvm viewpoint, you can make load-balancing possible.
By creating the mutiple number of LUNs instead of a single large LUN, you can improve performance.
This is done by the size of command queue increased indicating that enough commands are queued to keep the disk aray busy.

Never say "no" first.