Licenses for SQL Server Mirroring with Witness [closed]

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I'm developing an application for a client and I need to use SQL Server and he needs High Availability.

I have a question about licenses I can use to have a mirroring configuration and a witness database.

In this document, in the "High Availability (AlwaysOn)" section, row "Database mirroring", It says that Standard edition supports it, but Web and Express are witness only.

Does it mean that I need 2 instances with Standard edition and one may be either Express either Web?

It it possible to achieve the mirroring with the web Edition?

Thanks in advance

Answer 1

Short answer: No. You need two instances of at least Standard edition to support the mirror; the witness server simply "witnesses" the need to automatically fail over between the Principal and the Mirror. This witness can be either Web Edition or Express.

You can have a mirror without the witness, but there will be no automatic failover.