You can remove a collection after it has been created. When a collection is deleted, it is no longer visible to users on the search query page, and all configuration and index files associated with the collection are deleted. The actual documents that formed the collection are not deleted from the file system, just their index entries in the collection are deleted.
To remove a collection, perform the following steps.
Select the virtual server that contains the collection you want to remove, and click the Manage button.
Select the Search tab and then click the Maintain Collection link.
From the Collection drop-down list, select the collection you want to remove.
Click the Remove Collection button.
When a collection is removed, the maintenance scheduled for the collection is also removed. For information about scheduled maintenace, see Adding Scheduled Collection Maintenance.
Do not use your local file manager to remove collections because doing so will not update the corresponding configuration files.