I noticed that there are a large about of log files in C:\inetpub\logs\LogFiles\W3SVC1 on my Sharefile Storage Zone Controller Server. These log files can grow quite big and you should be aware.

What are W3SVC Log files?

They contain access to your website mostly POST and GET entries to parts of your website and useful for troubleshooting. The default website in iis will be W3SVC1, if you have other websites then they will log to instances W3SVC2, 3 etc.

Are they safe to delete?

Yes, these are totally safe to delete, but it would be wise to keep the last 7 days for security reasons or in case of a breach of your website. You can go into the directory and remove them manually or schedule a cleanup on a periodic basis.