Oracle 8i is not accepting credential while trying for normal export backup on Remote Desktop Connection at Windows Server 2003 R2 Standard Edition

Oracle 8i is not accepting credential while trying for normal export backup on Remote Desktop Connection at Windows Server 2003 R2 Standard Edition. It shows: Error- EXP-00056, ORA-12560. I tried searching for solution for this issue online but have not found yet. Screen shot of error message

configuring RAID 1 on a Enhance Technology R4SA EnhanceBOX eSATA

My place of employment has this under-utilized Enhance Technology R4SA EnhanceBOX 1U 4-Bay 4-port eSATA Disk Array Enclosure, with each bay having a 1.5 TB drive. You can see the back of it here http://www.scsi4me.com/enhance-technology-r4-sa-enhancebox-1u-4-bay-4-port-esata-disk-array-enclosure.html scrolling down. If I’m understanding the configuration in order to get a RAID 1, I’d need a 4 port e-sata…