email backup

[tecsupport apexcollege edu np]

hi list!

I am planning to backup email of my mail server. For that, I installed and
configured another hard disk and added to the mail server. There are
around 600 email accounts and planning to backup using tar.
I want to ask, whether the method is effecient or not or is there any
other better methods ?

Thanks
regards,
suryaman maharjan