Adding crawl component FS4SP

Question

I have a SharePoint with Fast Servers. I have multiple content sources in my Fast content SSA but right now I have one crawl component. I would like to add one more crawl components. I saw this Microsoft document but I am not sure do I need to Full Crawl after this? If yes, can you please tell me why is that as all the indexes are in Fast search and crawler always keep temporary index files so If I add another crawler now in content SSA , why it affects it?

I am not sure if I want to add another database but as of now I just want to add one more crawl component on different server. http://technet.microsoft.com/en-us/library/ff599534.aspx

Answer 1

Adding more crawl components will not require re-crawling. The crawl components jobb with FAST is merely to connect to the system being crawled, pull down the item, and pass it on to the FAST farm. Therefore, adding more crawl components is not that useful for FAST as all the item handling occurs on the FAST farm.

However, adding multiple crawler databases are useful when you get multi-million items.

Why do you want another crawl component? If you want to increase crawl speed try adding crawler impact rules instead. If adding more threads to the crawling maxes out the network card (or memory/cpu which is unlikely) then you can add another crawl component.

The SharePoint crawler database keeps track of all the items being indexed, to support incremental crawls etc.