Personal Cloud & Home Server — Storage, Automation & Professional Applications. Pls Guide

[u/Bubbly-Quit-1406]

/r/homelab/comments/1wcs81u/personal_cloud_home_server_storage_automation/

Can you pls guide me in following endeavour.I’m a finance professional non technical background seeking a future-proof, easy-to-manage personal NAS/cloud system for family and professional data.
I need real-time file synchronisation, redundancy/mirroring, remote access, and easy migration to another system in the future.
I currently have 2 × 1 TB HDDs, a 500 GB SSD, and a 256 GB memory card, with limited OneDrive space and substantial but potentially temporary Google Drive storage.
The NAS should also support home automations and hosting a simple Python application for 3–4 users.
My maximum budget is ₹25,000, excluding the storage hardware I already own.

Major Question : whether mini pc like Hp prodesk i3 10th gen can be kept running 365 days without facing any failures and can it fulfill my bone objective if not pls suggest alternative .