Hi,
You need no new controller,instead you can purchase SFPs/DAC cables to upgrade to 10GbE host port support.
MSA 2040 SAN controller supports 8 GB FC, 16 GB FC, 1GbE iSCSI or 10GbE iSCSI SFPs.
HPE MSA 10Gb Short Range iSCSI SFP+ 4-Pack Transceiver
(Includes four x 10Gb SW iSCSI SFPs) C8R25B
MSA 2040 SAN Controller allows customers to create their own Combo Controller by mixing FC and iSCSI SFPs(1/10gb)
When configuring a combination of host interface protocols, host ports 1 and 2
are set to FC (either both16 Gbit/s or both 8 Gbit/s), and host ports 3 and 4 must be set to iSCSI (either both 10 GbE or
both 1 GbE), provided the Converged Network Controller ports use the qualified SFP connectors and cables required for
supporting the selected host interface protocol.
Please check page 7 in Quickspecs https://h20195.www2.hpe.com/v2/getdocument.aspx?docname=c04123144
For MSA 2040 10Gb iSCSI configuration user can use DAC cables instead of SFPs.
For more info on DAC cables check page 33 in above link.
****Use the set host-port-mode CLI command to set the host interface protocol for MSA 2040 SAN
host ports using qualified SFP options. MSA 2040 SAN models ship with host ports configured for FC. When connecting
host ports to iSCSI hosts, you must use the CLI (not the SMU) to specify which ports will use iSCSI. It is best to do this
before inserting the iSCSI SFPs into the host ports.***
For more information on 10GbE ISCSI upport on MSA check pg 31 https://support.hpe.com/hpsc/doc/public/display?docId=c03792322
Hope this helps!
Thanks
HPE Employee