What about Lenovo EMC px12-450r? (part of VMware Storage compatibility list filtered by partner: EMC)
http://shop.lenovo.com/gb/en/servers/network-storage/lenovoemc/px12-450r/#techspecs
The alternative is to purchase a branded server with a LSI card but without disks
and purchase compatible Trays/Caddy and hard disks from third party to spare money
and use higher capacity disks (consumer SATA disks)
* HP ProLiant DL380p / DL385p / DL380e
* PowerEdge R720
* Fujitsu Primergy RX300 S8
The dream solution is a OCP Open Vault (2U) attached to a server (1U) running Debian Linux with iscsitarget
Best Regards,
Guy Baconniere