HELP!: How to read and write to External hard drives? What file system to use?

hey all, this has been really frustrating for me today. i want to be able to write to an external HDD that's formatted in NTFS. today i find out it isn't possible to write to this file system on a Mac and that on FAT32 it is possible. however, FAT32 can't address files larger than 4GB so this hurts me a lot. are there any other file systems that'll allow me to read and write from a Mac? my goal was to use freeNAS to build a NAS with an old tower and connect my external hard drives to it, but if i can't write to them this may not be possible.
thanks guys, i'd appreciate any help!

Read this, you don't need to install any software unless you have no choice.
https://discussions.apple.com/docs/DOC-3044
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents

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