PS6000XV end of support is 7 years after invoice date.   The end of sale date for the PS6000 was Nov 18,2011, making 2018 the last possible support date, presuming you bought it Nov 2011.  PS6500E end of support is 5 years after invoice date.   There's no released date for end of sale since the replacement hasn't been released yet.  Regards, 
When do PS6000XV & PS6500E reach end of life?  Thanks
End Of Life for PS6000XV & PS6500E