own default processor of luns

it's round robin, if you were to create 4, 2 would be placed on SPA and 2 on SPB

thank you for answer,

the meaning of your words that may be lun 2,4 placed on SP A or on SP B or one of them placed on SP A and ather on SP B or vice versa that is you mean??
and who do this round robin? is it FLARE OS?

thanks

again thanks for your answer

the meaning of your words that may be lun 2,4 placed on SP A or on SP B or one of them placed on SP A and ather on SP B or vice versa that is you mean??

if you create 4 LUNs, the system will place 2 on SPA and 2 on SPB.

FLARE OS makes that decision where to assign the LUNs.

But in my storage system I created 18 LUNs, 6 of them placed on SP A and 12 placed on SP B.

You basically have 2 options, manually select which SP you want to assign to a LUN, or you let the System make that decision for you. The system has a huge number of undocumented algorithms that will decide which luns goes to which SP. The aim is to make it as load balanced as possible.