Hiwatch IPC-D120 NAS Setup?

[edwardandtubs]

Has anyone got any experience with these cameras?. I've got it setup and can see the camera fine, using IVMS software. I've got a NAS setup and have managed to 'test' the setup in the Storage->NAS section of IVMS. However I'm not able to Format the HDD as it just gives an error. I've attached some screenshots if anyone can help?.

Also, worth noting that any file or directory created on the NAS drive disappears after an 'unsuccessful' format!.