What interface to use to connect HP DL380 gen9 to HP MSA 1040

Hi, 

My customer is asking for server with data storage array from me. and based on his requirements i suggested him following server:
HP ProLiant DL380 Gen9 E5-2670v3 2.3GHz 12-core 2P 64GB-R P440ar 8SFF 2x10Gb 2x800W PS Server/S-Buy
784655-S01

Link on HP site

its coming with additional HP FlexFabric 10Gb 2-port 556FLR-SFP+ Adapter . 

As customer wanted high capacity data storage i offered him following:

HP MSA 1040 2-port 10G iSCSI Dual Controller LFF Storage  Link on HP.com. 

I thought to connect them through SPF+ port on DL380 's 556FLR adapter, BUT on specification page of HP MSA 1040 chosen it's showing only SFP port for 10G iSCSI connection. Despite this in Service and options page of MSA 1040 they are showing SFP+ to SFP+ compatible cables. 

THE QUESTION IS: how to connect above given HP DL380 and HP MSA 1040 using 10G connection, what kind of cables or transceivers would be required. 

I just could not figure out is 10Gb SFP+ and 10Gb iSCSI are compatible or same?

Or it would be better(cheaper) to connect server and data storage using different (but high speed also, at least 8G) interface?

Would appreciate any help.