Hi @Sarvesh Pandey ,
As far as I know you cannot restore a SQL Server 2000 database to a SQL Server 2014 instance. You will need to restore either to SQL Server 2008 or 2008 R2 instance first, and then take a backup of that database which you can then restore to 2014.
There a lot of features from SQL Server 2000 that have been discontinued in SQL Server 2014. Check THIS list for the details about what features have been discontinued, and what to use as replacements.
SQL Server 2000 does support high availability, you'll find more information here:
Microsoft SQL Server 2000 High Availability Series
https://learn.microsoft.com/en-us/previous-versions//cc966499(v=technet.10)
Here are a few links that may help you in migrating your SQL Server 2000 databases to SQL Server 2014:
- SQL Select: Steps to Migrate from SQL Server 2000 to SQL Server 2014
- Migration of a large enterprise from SQL Server 2000 to 2014. Real life case.
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Best regards,
Leon