Can you spread this around for me...... PLEASE

Running on a H50-7026 AIX 4.3.3

We have a 7337 autoloader with DLT7000 tape drive. IBM hardware support told us to set the blksize to 0 for performance reasons. When we do our UDB 7.2 database online/offline backups fail because you are not allowed to use 0 as a blksize..... Left hand not knowing what the right is doing....

When we alter the blksize, the backup crawls.... We had to switch to a stand alone 8MM tape drive.....

We have no problems backing up our Informix or Oracle databases to DLT....

Any suggestions or ideas?????

Desperate in Dixie