I'm wondering how I can back up a mail server on IBM 1U with 2x2TB disk. No more slot is left. Should I do RAID or is there any other better idea?
In case the mail server has been used to store mail up to 1 TB. The other HD is used for cloud file sharing. Can we do something to back up from here without interupting everyday use much?
I desperately need your advice and thank you in advance for any help.