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Surviving a week on battery after substation fire

Datacenter Talk by quinnbizz 5 replies 312 views
quinnbizz

Member OP

#1

Experience report, take it with a grain of salt.

Substation fire last tuesday, 14:30. Our DR plan assumed 10 minutes of battery. UPS is sized for full load, we run at 3% of design capacity. Batteries lasted 167 hours. Seven days.

IMO this is not a success story. YMMV. We never tested actual draw. The "heroic survival" was blind luck. If someone had plugged in a GPU cluster monday, we would have dark floor in ten minutes.

I am logging this so someone else learns. Test your actual load. Not nameplate. Actual.

...
armstrongvds

Member

ARM Enjoyer

#2

Quinnbizz this is INSANE value for lead acid!

Those batteries were basically idling! At 3% draw the chemistry just... coasts! You found the cheat code!

Ampere boxes sip power. Runs circles around x86 for this exact scenario. I have a Altra Max at home pulling 45W under full tilt. You could run a week on a car battery.

What UPS model? Need specs!

one small ping for man...
svendeal

Member

Deal Sniper

#3
armstrongvds said:
Run a week on a car battery

Grabbed that instantly
$12/YR ARE YOU KIDDING thats the backup power deal of the century man

Tracking UPS prices now this is better than my Hostinger flash sale score in 2024

Someone find me a substation fire discount code

world record: 4min Arch install
AS

Member

#4

3% load for a week isn't luck, it's physics

carlos2

Member

#5

Which Altra Max? Q80-30 or the 128-core

not your keys, not your coins
ana_mad

Member

#6

What UPS model and battery string count?

swimming upstream since 2019 🐟

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