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You also lose one of EC2's only advantage: per hour billing. This isn't true. Reserved instances still use per hour billing, just at a discounted rate.
by ejdyksen 13y ago
You also lose one of EC2's only advantage: per hour billing.
This isn't true. Reserved instances still use per hour billing, just at a discounted rate.
- ejdyksen 13y agoAlso, I think the author is mixing up spot instances and on demand instances, which have vastly different pricing structures.
- nirvdrum 13y agoThat's not entirely accurate either. If you buy a heavy reserved instance you have to pay for every hour, whether or not you use it, for the length of the reservation. So, it's technically still per-hour billing at a discounted rate, but you gain absolutely nothing by shutting down a machine.
- acdha 13y agoWhat you described is not true, however, for light or medium reservations where shutting down a machine means you have no cost. The other key difference is that reservations apply to hours used, not specific instances, which means you can do things like buy heavy instances for your 100% utilization level and medium for the amount beyond that which you commonly but not always use.
- nirvdrum 13y agoI made no claim otherwise about light or medium instances. I was merely pointing out that for many people Amazon is no longer a purely pay-per-hour or pay-for-what-you-use service. Many people overlook the wording change made for heavy reservations. The parent's refutation of the article isn't as cut and try as stated.