there's a good joke hidden on the HP web site; see yourself:

Go to www.hp.com/go/support, then enter "eva 6000".

The result looks like this:
» Storage EVA Array Controllers
» HP EVA4000/6000 Controller Pair

» HP StorageWorks IP Distance Gateway
» HP StorageWorks EVA6000 FCIP Distance Gateway Kit

» HP StorageWorks Enterprise Virtual Array XCS Software
» HP StorageWorks EVA4000/6000/8000 5.0a Controller Media Kit
» HP StorageWorks EVA4000/6000/8000 5.1 Controller Media Kit

» HP StorageWorks 4000/6000/8000 Enterprise Virtual Arrays
» HP StorageWorks EVA4000 SAN Starter Kit
» HP StorageWorks EVA4000 Starter Kit
» HP StorageWorks EVA4000/6000/8000 Disk Arrays

Now select the first link to see how a "Storage EVA Array Controllers" looks
like. ;-)

P.S. The picture has changed recently. A few months ago it was something
looking like an USB-cable...