Can I configure exroot using wrt1200ac esata login?

Hello, I want to expand my root area to use eSATA login of my Linksys WRT1200ac is it possible? Because I can't install software.

I will connect a 4TB external usb 3.0 disk box to the USB 3.0 port and that port will be full.

In short, I want to convert my wrt1200ac device to nas device and increase root space. I need your suggestions for this. Thank you.

router space, and storage/NAS space are two different things.

this is for router space:

Can I use esata login with openwrt? Which package should be installed for this?