*duh*

This is what happens when you get interrupted while posting and then just click the post button.
Connector is for the fan module of an HP Cluster Platform 3000 chassis. Pitch is 2.54 mm. I measure the sockets to be 1.63x2.06x8.72mm (height of 2.06mm measured at the tip of the socket). The holes on the back of the connector measure 1.75x1.75mm.
The connector is 21x3.46x9.1mm excluding the back flange. The flange measures 27.28x7.9x1.77mm. I'll try to get a drawing together later today.