How File Deletions Work

Q: I deleted a bunch of files from one of my virtual machines yesterday. Deduplication happened overnight, but the total disk space in use didn¡¦t go down. That doesn¡¦t make any sense. Q: I completely evacuated one of the LUNs on my NetApp array, but the NetApp still says that the LUN is almost completely full, even after deduplication. How can that be? A: To understand what is happening you need to know a little bit about how a file system works. A simple way to explain it is that a file sys

URL: http://lonesysadmin.net/2009/03/02/how-file-deletions-work/