As an Oracle 6580/6780 here is the email I received (in case you missed it)
As far as I know NetApp is commited to supporting the E7900 but upgrades to the systems from Oracle will stop at some point.
Dear Oracle Sun Storage 6000 Array Support Customer,
Oracle’s Sun Storage 6180, 6580 and 6780 arrays had an End-Of-Life announcement on January 10, 2012. In order to provide customers additional time to transition to the next generation products, the End-Of-Life for the Sun Storage 6180, 6580 and 6780 arrays have been split into two phases. The last order date for parts listed under Phase I below is May 31, 2012, while last order date for the parts listed under Phase II below is November 30, 2012. Additional information about system lifecycles and discontinued systems can be found in the Sun System Handbook available on My Oracle Support.
Phase I
For the following parts, the Last Order Date is May 31, 2012
All 6180, 6580, and 6780 controller trays
2TB 7.2K SATA hard disk drives (HDD)
Specific rack-mounted options
Specific premium feature software
Phase II
For the following parts, the Last Order Date is November 30, 2012:
CSM200 expansion trays (x-option)
300GB 15K FC & 600GB 15K FC HDD
73GB FC Solid State Disk Drives (SSD)
Remaining options and premium feature software
Oracle’s Pillar Axiom 600 storage system is Oracle’s designated replacement for the Sun Storage 6580 array and Sun Storage 6780 array and Oracle’s Sun Storage 2500-M2 is Oracle’s designated replacement for the Sun Storage 6180 array. For more information regarding the Pillar Axiom 600 storage system or the Sun Storage 2500-M2 array, please consult your Oracle Sales Representative or go to the SAN Storage page.
Sincerely,
Oracle Systems Hardware Management