>>We rebuild indexes daily, but we have a fair amount of CRUD.
>
>What is CRUD?
>
>>Don't forget about reorganizing indexes. Fragmentation greater than 10% but less than 30% (IIRC) suggests that index be reorganized rather than rebuilt. SQL Server can reorganize indexes without making them inaccessible which means no down time, though I would recommend doing reorgs during off-peak hours.
>
>I never rebuilt. I delete them and recreate them from scratch.
>
>>SQL Server Enterprise allows rebuilding of indexes while leaving them online for 24/7/365 uptime goals.
>
>What do you mean exactly?


Should have dropped the R and said CUD - create, update, delete operations

Why wouldn't you just rebuild the indexes? What purpose does dropping them and re-adding them serve?

Rebuilding indexes with the online option = no downtime:
http://www.mssqltips.com/sqlservertip/2361/rebuilding-sql-server-indexes-using-the-online-option/