Live data from Hacker News

EC2 Dedicated Hosts

aws.amazon.com

21–30 of 149 posts

Re: EC2 Dedicated Hosts

#21
post #15
post #12

Can anyone give me the advantages of choosing an EC2 dedicated host over going with a true dedicated server?

All the rest of your infrastructure is in AWS and you want the high interconnect speeds.

This shouldn't be any faster than normal EC2.

(Edit: I may have misunderstood the comment. This will certainly have a faster interconnect to EC2 compared to a non-EC2 dedicated server.)

Re: EC2 Dedicated Hosts

#23
Some pro/cons that would be interesting to discuss:

Other than licensing, an advantage I'm guessing is in reducing noisy neighbor affects. In our case, we use a lot of t2.micro instances, which seem to suffer from this.

A disadvantage is that the instances within a dedicated host might all go down together? (similar to if you put all your instances in us-east-1e and 1e goes down?, or of course if all of us-east goes down). Although I'm not sure a dedicated host itself is more likely to go down, while a datacenter remains operational. That's what I'm most interested in knowing - how do these fail?

Re: EC2 Dedicated Hosts

#25

Some pro/cons that would be interesting to discuss: Other than licensing, an advantage I'm guessing is in reducing noisy neighbor affects. In our case, we use a lot of t2.micro instances, which seem to suffer from this. A disadvantage is that the instances within a dedicated host might all go down together? (similar to if you put all your instances in us-east-1e and 1e goes down?, or of course if all of us-east goes…

We monitor the health of the host; take a look at http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/dedicated... to learn more.

Re: EC2 Dedicated Hosts

#26

All the advantages of a dedicated server without the hassle of saving tons of money.

Their example dedicated host adds up to $2'226 per month - had a quick calc on the retail HW cost for a machine like this - should not be more than $6.5k with 2 * E5-2670 v3 12 cores.

What I understand so far - it is physically bundling a fixed amount of virtual machines to a physical host - in the example "dedicated host" 22 * m4.large.

Bundling your virtual machine to one or a series of physical hosts / on the same network segment is a service you can have from quite a few hosting providers (if you ask).

If you opt for a solution like this, it is also most likely that you will run an enterprise scale solution and you will do so for quite some time - at least 6 months upwards.

Keeping that in mind together with a lifetime of at least 2 years for such HW, you will be paying 8 times the HW cost for a 2y lifetime for a management layer (storage / connectivity you pay per GB with EC2).

I guess everybody will have to see how this fits into their business model for non volatile / predictable resource demand or a set of when physical iron might be a better choice (colo or rent).

Re: EC2 Dedicated Hosts

#27
post #21
post #15

Earlier quoted context omitted.

All the rest of your infrastructure is in AWS and you want the high interconnect speeds.

This shouldn't be any faster than normal EC2. (Edit: I may have misunderstood the comment. This will certainly have a faster interconnect to EC2 compared to a non-EC2 dedicated server.)

Higher relative to getting a dedicated server from a different provider.

Re: EC2 Dedicated Hosts

#28
post #21
post #15

Earlier quoted context omitted.

All the rest of your infrastructure is in AWS and you want the high interconnect speeds.

This shouldn't be any faster than normal EC2. (Edit: I may have misunderstood the comment. This will certainly have a faster interconnect to EC2 compared to a non-EC2 dedicated server.)

No, but if you need a dedicated server in addition to other EC2 hosts it will certainly be faster to be in a AWS data center.

Re: EC2 Dedicated Hosts

#29

Some pro/cons that would be interesting to discuss: Other than licensing, an advantage I'm guessing is in reducing noisy neighbor affects. In our case, we use a lot of t2.micro instances, which seem to suffer from this. A disadvantage is that the instances within a dedicated host might all go down together? (similar to if you put all your instances in us-east-1e and 1e goes down?, or of course if all of us-east goes…

You have to consider it a SPOF. Put nothing on the same dedicated host that you cannot fail at the same time. Though in AWS speak, generally you treat an availability zone as a SPOF... so dedicated host is of course a SPOF...

Re: EC2 Dedicated Hosts

#30
post #26

All the advantages of a dedicated server without the hassle of saving tons of money.

Their example dedicated host adds up to $2'226 per month - had a quick calc on the retail HW cost for a machine like this - should not be more than $6.5k with 2 * E5-2670 v3 12 cores. What I understand so far - it is physically bundling a fixed amount of virtual machines to a physical host - in the example "dedicated host" 22 * m4.large. Bundling your virtual machine to one or a series of physical hosts / on the same…

What if the license of the software you want to run is 100k per physical host? Then being able to run 2 or 4 instances on the same physical host makes the $2226 cost pretty insignificant.
Post reply on HN