Increasing File Size on AIX

Hi
I am a bit green to AIX - but when our backup operator tries to do a restore from one AIX box to another, he get's the error:
'A file cannot be larger than the value set by ulimit'

I am wondering what is the impact of increasing the AIX filesize limit of 2 gb to unlimited. And how would I go about doing this?

Thanks
Rosie

You can use smitty to cange this for that specific user. There is no impact at all.
Soft FILE size [-1]
Soft CPU time [-1]
Soft DATA segment [-1]
Soft STACK size [-1]
Soft CORE file size [-1]
Hard FILE size [-1]
Hard CPU time [-1]
Hard DATA segment [-1]
Hard STACK size [-1]
Hard CORE file size [-1]

or you can edit /etc/security/limits file