Don Knott wrote:
LTO3 is the standard these days... LTO4 will be out midyear hopefully and maybe LTO3 prices will come down.
I use BRUServer for network backup. It provides similar services to what your planning to use Amanda for. They maintain a good bit of information at their websites about drives & scsi cards. I'm on an older RHEL kernel which they don't support because of scsi problems that require me to reboot it about 4:00am each day to keep the tape drive in view or it disappears. Other than that, the setup works well and LTO3 is fast.
Also don't use adaptec SCSI cards with LTO on CentOS3/4. Either the card or the Linux driver just causes hours of heartache. LSI was recommended to me from this list and solved the numerous problems we had while using adaptec/LTO.
Dean