Security → Re: File Shredder for Network Drives

Thanks for those points about speed. My situation is such that I only need to wipe the free space and won't be doing it that often, so 2 hours (or whatever) would be acceptable. Still frustrating that I can't find a simple solution as for direct attached.

What file system does this NAS use?

You need a program that runs on Windows, and supports the file system used on the NAS.

If it's a low-end consumer NAS, it's likely running Linux, Samba, and some Linux-supported file system.

Why's it matter? Because on some file systems, a honking great file of zeroes doesn't necessarily occupy any disk space ('sparse file support').

Can you get to the shell on this NAS? If so, perhaps there's a Linux utility you can use.