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Event ID: 100 Source: ESENT

Source
Level
Description
<service> (892) The database engine 6.00.3940.0004 started.
Comments
 
This behavior can occur if the WINS database is damaged or is missing from the "%SystemRoot%\system32\wins" folder. See ME225346 for more details.
ESENT is the service that manages the Jet database engine used by several applications (WINS, DHCP, etc...).

Services:
lserver -  The Windows Terminal Services License logging service. You can either disable this service (unless of course, you use it to track WTS licenses on your domain) or locate the database used by lserver and configure your backup software not to perform backup of those files.

ntfrs - The File Replication Service - no additional info
I think that is interesting to know how many services are based on the Extensible Storage Engine:

Active Directory (NTDS)
File Replication service (FRS)
Windows Internet Name service (WINS)
DHCP
Security Configuration Engine (SCE)
Certificate Server
Terminal Services Session folder
Terminal Services Licensing service
Catalog database
Help and Support Services
Directory Synchronization service (MSDSS)
Remote Storage (RSS)
Phone Book service
Single Instance Store (SIS) Groveler
Windows NT Backup/Restore
Exchange store
Microsoft Exchange folder (SRS and DXA)
Key Management service (KMS)
Instant Messaging
Content Indexing

These as per ME318116. Expect more to come from Microsoft :-)

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