You need two DB
Broker DB - It is configured in httpUpload and your Delivery
Session Preview DB - it will be used by Session preview service and this service is consumed by XPM. No separate db for XPM. This db will also configured in storage config of your website.
HttpUpload and Odata.svc would be separate websites
There is no known bandwidth limitation on the Http Deployer itself that I know of. That said, if the network latency for other protocols is a lot lower compared to HTTP traffic, I would look in the following places first:
Http Proxy servers and / or firewalls standing in between the source and the destination. It may very well be that bandwidth throttling ...
Session Preview is a feature of Experience Manager that allows editors to make, and then view, updates to content across multiple pages without having to continually check-in and republish the content.
It also ensures that if Editor B updates (a different piece of content on) the same page that Editor A is working on, then this is also reflected in what ...
Publishing from 8.x to an untouched 2013 SP1 deployer should work just as is.
Don't upgrade your deployer at all - just keep it running as is, and try publishing.
8.x deployer is only available as a microservice, and requires discovery service, etc. Don't upgrade your database, don't upgrade your web applications - and things will work as is. If/when you ...
Your "preview" (staging) site indeed requires two databases - one broker, one sessionDB. Your live site requires only one (just the broker). You should configure the sessionDB in the datasource inside of the sessionwrapper, the broker DB in its normal place below.
you can look at following to increase PostSizeLimit key, if value is less than your required.
It entirely depends which web server you are using. For example: if you are using Tomcat, then you may want to follow the below link:
Here refer the maxPostSize property which you should be considering.
Share the specific Web Server you are using, and the community will be in better shape to help you ...