# How to determine size of EC2 Wowza Instance?

**URL:** <https://community.wowza.com/t/how-to-determine-size-of-ec2-wowza-instance/34023>\
**Category:** Wowza Streaming Engine\
**Created:** [December 2, 2009, 4:56pm UTC](https://community.wowza.com/t/how-to-determine-size-of-ec2-wowza-instance/34023 "2009-12-02T16:56:28Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Charlie\_Good](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/charlie_good/32/383_2.png) [@Charlie\_Good](https://community.wowza.com/u/Charlie_Good)\
**Post date:** [December 2, 2009, 5:01pm UTC](https://community.wowza.com/t/how-to-determine-size-of-ec2-wowza-instance/34023/2 "2009-12-02T17:01:31Z")

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As far as sizing goes we suggest the following total outgoing bitrates for each instance size:

small: 150Mbps

large: 250Mbps

xlarge: 350Mbps

You can certainly do a bitrate test on stream startup and use the appropriate stream based on avaliable bitrate. The BW Check tool is here:

[http://community.wowza.com/t/-/31](http://community.wowza.com/t/-/31)

We will support Flash dynamic streaming when Wowza 2.0 is shipping.

Charlie

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