Exchange 2010 and ESE Backup API

Exchange 2010 does not support the ESE API for doing backups like it did in 2003 and 2007 according to MSDN. I Quote: "Exchange 2010 no longer supports the ESE streaming APIs for backup and restore of program files or data. Instead, Exchange 2010 supports only VSS-based backups."

So my question is, if this is the case, why is th开发者_如何学Ce DLL (ESEBCLI2.DLL) still shipped with exchange 2010? I found it under C:\Program Files\Microsoft\Exchange Server\V14\Bin. Am I missing something here?

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The High Availability component of Exchange 2010 uses some parts of the streaming backup API under the covers - for doing reseeds for example. The full API isn't supported though.