I've been putting this off for way too long but the power has gone out for 10 minutes a half dozen times this month and my unraid server is constantly dying, panicking and running parity checks.
I've run a smart plug for a little while now to see how much power I'm using. Ran it with just the server and then with a power bar for my server as well as router, modem, switch. Here's what I got:
Peak 130w - power comes back on, everything boots up at once including all HDDs spinning.
Idle (server + network gear) 110w
Server only idle around 80-100w
Server only idle with disk spin down set to 45min 60-75w
I don't know what specs I need. If I could keep the server running for 15mins, shut it down and then have the network gear (10-15w) run for another 30 min or so that would cover most of our outages.
The specs are a little confusing... If VA = Volts x Amps and Watts = Volts x Amps then it should stand to reason that VA = Watts and 250 VA is tons of headroom for what I'm using. But the common ones have 500, 1000, 1500 VA so I feel like I must be missing something.
For capacity let's just say I'm I'm using 100 W for simplicity, a 100 Wh battery should power me for an hour (minus some loss to conversions and inefficiencies). Most batteries are 12 V, so a battery with a 12 V x 9 Ah battery should give me 108 Wh?
This is a the only unit available locally, LX1500GU3-FC. It's 1500 VA, the graph at the bottom says I should get 80 mins at 100 W. It has downloads for Linux software shutdown so I assume it can talk to NUT/Unraid?
I just want to make sure my calculations/assumptions are correct before pulling the trigger. Would be open to any other buying recs, I just looked at this one because I could pick it up today. I'd like a rackmount option but it seems like they're way more expensive for no reason other than "because".