Yeah me as well.

Had a cheap server that had 2 x 2tb for stuff I wanted to access while away

Then turned into 3 x 8tb for redundancy and ZFS

Then turned into 2 x 3 x 20tb for dual redundancy and ZFS1

Now I want to upgrade to ECC memory and the cpu, Mobo, and ram will likely cost over $1k.

Plus with more hardware it will use more power. I'm at 125w normal usage. That costs me $284 a year to run my stack.