DDR and 11.31

[Melanie Battson]

Found this bit in another closed thread:
"11.31 comes with a feature named DDR which lets you assign low-level parameters such as the queue length using a mask, and it will be set automatically depending on the exact model SAN array the OS detects, it's much easier to manage. I simply set the DDR to put automatically the queue length to 32 for EVA arrays, and default for everything else."

I'm not finding any reference to this elusive utility on the HP site, nor on my many 11.31 blades. Looking for this to expand the queue length for a NetApps SAN, as the disks can't keep up with the demand, and I need to be able to tune just this connection, and not affect my XP12000 SAN luns.