Recommended UPS?

Hi, I just bought the DS1821+. Looking to set up a home office nas for all my documents and a Plex server. I'm wondering whats the mid-range to best UPS to get for my NAS in case of a power outrage. Thanks.

We have a list of Smart-UPS list hereAPC Smart-UPS SMT750I 750VA 230V, LCD, Tower UK USAAPC Smart-UPS SMT1000I 1000VA 230V, LCD, Tower UK USAAPC Smart-UPS SMT1500I 1500VA 230V, LCD, Tower UK USAAPC Smart-UPS SMT2200I 2200VA 230V, LCD, Tower UK USAAPC Smart-UPS SMT3000I 3000VA 230V, LCD, Tower UK USAhttps://nascompares.com/2018/04/06/synology-with-a-smart-ups-connect-manage-shut-down/APC have made it easy to find a smart UPS that would automate the shutdown process. Just look for a keyword "smart".Other UPS would not do an automatic shutdown, just simple power maintenance until it runs out of the battery.I hope this helps.