Hi,

Thanks,

But can you tell me any scenarios where we can use Clustering/Mirroring together.

Actually I am very much confused on High availability/Disaster Recovery options.

High availability : Means 99.99% of times data must be available.

For this if we take an example, if the Primary db goes down then the secondary will become as primary in each and every options (Clutering/Miroring/Logshipping), we are achieving this Manually/Automatically. Why the Primary goes down, may be because of H/W failures or scheduled maintenance right... then we can say this as Disaster Recovery.... what is the point to mention two technical words HA/DR for the same thing.