Is backup with smeserver-dar2 sufficient ?

Hi all,

What is your opinion about taking backups with dar2 ? Is it sufficient or shall I move to Affa or something newer ?
I'm quite hapy with dar2, seems to be working all right. I'm using a USB-disk for this and total data is under 5 gigs.
My concern is how can I manage to resolve a total server failure.

At this moment backup includes:
etc/e-smith/templates-custom
etc/e-smith/templates-user-custom
etc/group
etc/gshadow
etc/passwd
etc/samba/secrets.tdb
etc/samba/smbpasswd
etc/shadow
etc/smbpasswd
etc/ssh
etc/sudoers
home/e-smith
root

Is this enough ?

Name : smeserver-dar2
Arch : noarch
Version: 0.0.1

jysse