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Comment by aberkowitz | Hacker News Reader

Linode has a 99.99% uptime guarantee, which amounts to 43 minutes and 12 seconds offline in a 30 day month. While I don't have a Linode in Freemont, their status page appears to indicate, at minimum, 1 hour of downtime. As repayment for the inconvenience, users get the lost time added to their balance.

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A 99.99% uptime guarantee would be 4.32 minutes per month. You calculated for a 99.9% uptime guarantee.

I'm going to take a long break from ever doing math again on HN.

With 99.99% uptime:

.0001 * 30 * 24 * 60 = 4.32 minutes

With 99.9% uptime:

.001 * 30 * 24 * 60 = 43.2 minutes

I think he just typo'd the %. From the terms[1]:

    Linode.com provides a 99.9% uptime guarantee on all Linode hardware,
    and on network connectivity. In any given month, if your Linode is
    down for more than 0.1%, you may request a pro-rated credit for the
    down-time.

[1]: http://www.linode.com/tos.cfm

Wait so the only backlash they get should they break their guarantee is that they credit me for the down time? This doesn't seem like a motivating factor to keep uptime. Is this standard practice in the industry? I know prgmr has refunded me the entire month when they broke their SLA.

All that said, I won't be getting rid of my Linode box in Fremont simply because it's one of the best vps's I've had performance wise. It just seems like an odd SLA.

It's a term of service (TOS) agrrement, not a professional SLA.

Most of us don't pay Linode anything important enough to warrant an SLA.

You don't get very strict 99.9% SLAs for $20 and $80 a month anyways...

Actually their SLA is only 99.9% uptime. Thats 525 minutes.

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