reboots while backing up

[zdrysdal@diagnostic.co.nz]

Hi all

I have a new server which has 2 scsi tapes attched to it and a backup
package called "sitback" which uses the common tar/cpio commands to
facilitate backups.  I am using it to back up database files on a AIX
system which has it's files shared through samba.  To access the files i
use the command "mount -t smbfs //aixserver/share /mountpoint".

5 minutes into the backup... the backup server reboots!!!  why is this
happening??  I have checked the messages, syslog files but they do not
contain any relevant info related to the reboot.

Perhaps I need a better backup package, or perhaps backing up samba shares
is not a good idea.

Any ideas???

thanx

Zane