When installing and configuring SharePoint, most of the logs by default are configured to be stored in the c: drive. They can be configured to be moved to a new location, however, by default they will be stored in c:. This should be taken into consideration when planning for the amount of storage space allocated for the c: drive or alternately, during configuration the settings can be updated to point to alternate storage locations.
Here is a table of the common log items and the access point to update the default storage location.
|Common Local Storage Locations Storage Type||Where to Update|
|Usage Logs||Central Administration > Operations > Usage Analysis Processing|
|IIS Logs||IIS Administration|
|Diagnostic / ULS Logs||Central Administration > Operations > Diagnostic Logging|
|Index Files||Set location when create a new SSP|
|Temp DB Files||SQL Management Studio|
|12 Hive||These files should not be moved.|