Amazon Web Services EC2 – Part 5: Sizing, Costs and SLA
Sizing and Costs
EC2, like the other services in AWS are pay as you go, pay for what you use, services. As I mentioned above, you basically pay for the power you use which is a CPU per hour charge, bandwidth and storage. Linux and Windows guests have a different pricing menu. I am listing the prices current as of Dec 2008. I recommend you always check at aws.amazon.com to verify current pricing before making a commitment.
Instead of buying or leasing a specific type of hardware (that you would then be responsible for upgrading over time), AWS computing power is based on an EC2 compute unit. An EC2 compute unit is the equivalent processing power of a circa 2007 1.0-1.2 Opteron or Xeon CPU processor.
|
Instance Type |
Memory |
Compute Units |
Storage |
Platform |
Linux CPU/Hour |
Windows CPU/Hour |
|---|---|---|---|---|---|---|
|
Small |
1.7GB |
1 |
160GB |
32-bit |
$0.10 |
$0.125 |
|
Large |
7.5GB |
4 |
850GB |
64-bit |
$0.40 |
$0.50 |
|
Extra Large |
15GB |
8 |
1690GB |
64-bit |
$0.80 |
$1.00 |
|
High CPU, Medium |
1.7GB |
5 |
350GB
|
32-bit |
$0.20 |
$0.30 |
|
High CPU, Large |
7GB |
20 |
1690GB |
64-bit |
$0.80 |
$1.20 |
Table 1: EC2 Sizes and Pricing
|
Data Transfer |
US per GB |
|---|---|
|
Transfer Into EC2 |
$0.100 |
|
First 10TB Out of EC2 |
$0.170 |
|
Next 40TB Out of EC2 |
$0.130 |
|
Next 100TB Out of EC2 |
$0.110 |
|
Out over 150TB |
$0.100 |
|
Within the Same Zone (Private IP) |
$0.00 |
|
Between Zones (Same Region) |
$0.01 |
|
Outside of the AWS Network |
$0.01 |
Table 2: ec2 Data Transfer Costs
SLA
Amazon warrants uptime to be 99.95% per service year. Amazon will credit your account for any unplanned downtime. You do not need to run for an entire year before claiming a credit for any downtime. You can get additional details at http://aws.amazon.com/ec2-sla/
