Release: Amazon EC2 on 2009-09-23

Release Notes>Amazon EC2>Release: Amazon EC2 on 2009 09 23
This release introduces shared snapshots.


Submitted By: Bruce@AWS
Release Date: September 23, 2009 12:00 AM GMT
Latest Version: 2009-08-15
Latest WSDL:
Created On: September 23, 2009 5:09 PM GMT
Last Updated: September 24, 2009 5:47 AM GMT

New Features

Shared Snapshots Amazon EBS now supports shared snapshots. Shared snapshots enable you to take snapshots of your Amazon EBS volumes and share them publicly or with specific Amazon EC2 users. For more information about snapshots, go to the Amazon Elastic Compute Cloud Developer Guide or Amazon Elastic Compute Cloud User Guide.


Known Issues

Windows Reserved Instances Reserved Instances are not currently available for Windows.
Windows AMI launch times Windows AMIs take longer to launch than Linux/UNIX instances due to larger AMI sizes and multiple reboots.
Windows AMI sizes Installing software on Windows AMIs can cause them to become large and easily reach the 10 GB limit. Before bundling, check the size of the C:\ volume.
Limitation on drive mapping There is currently no support for volume attachment to devices beyond /dev/sdp on instances running Linux/UNIX and xvdp on instances running Windows.
Security group limitation AuthorizeSecurityGroupIngress does not allow port ranges for group grants when using the command-line tools or the Query API. This is only supported through the SOAP API.
Instance limit New users are limited to a maximum of 20 concurrent instances, but many of our customers use hundreds or thousands of instances. If you need a higher limit, go to
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