>If you can convince me that your service will reliably mail me on incidents no matter what catastrophe happens to your data center
You do realize that it would take years to even establish a significant baseline against a simple VPS on any cloud provider in uptime?
It's much more important that you know which cloud provider and data-centers they are using, so you can verify you aren't actually running your servers in the same data-center.
Not that they mention it on their site, but a simple traceroute will tell you their ping-server is just a (bunch of?) Amazon instance(s). And Amazon is never down, right?
If somebody can convince you that their service will never be down, it's just means you gullible.
On the other hand, if your monitoring-service is in a different data-center from a different cloud provider, statistically speaking, chances are low, that your system and their system will be down at the same time. But you can expect a few false positives. With this kind of setup, you could get false positives just because outside-internet is not working.
Again, one would not use something like this for sensitive large scale productions. But very few large scale productions are sensitive, and very few sensitive productions are large scale.
Yet, if its this easy, why not slab it on every system anyway? Oh wait, the price.
You do realize that it would take years to even establish a significant baseline against a simple VPS on any cloud provider in uptime?
It's much more important that you know which cloud provider and data-centers they are using, so you can verify you aren't actually running your servers in the same data-center.
Not that they mention it on their site, but a simple traceroute will tell you their ping-server is just a (bunch of?) Amazon instance(s). And Amazon is never down, right?
If somebody can convince you that their service will never be down, it's just means you gullible.
On the other hand, if your monitoring-service is in a different data-center from a different cloud provider, statistically speaking, chances are low, that your system and their system will be down at the same time. But you can expect a few false positives. With this kind of setup, you could get false positives just because outside-internet is not working.
Again, one would not use something like this for sensitive large scale productions. But very few large scale productions are sensitive, and very few sensitive productions are large scale.
Yet, if its this easy, why not slab it on every system anyway? Oh wait, the price.