Already worked this out in previous posts - the 512GB size is too small. From now it's 11 months at most.
You have 13-14 months from June at most - i.e. around Aug or earlier next year the node will stop working and need replacing when it runs out of space. I'd suggest May actually from my calculations I posted ... ... but anyway since people wanna believe phil - here's his August post: https://bitcointalk.org/index.php?topic=5340015.msg57197740#msg57197740