I have four LTO drives in an L700e library and have had difficulties getting two of them to work. Using Netbackup 4.5fp3 and ACSLS 6.1.1 LTO's are IBM Ultrium td1 Gen1. The two in question do not show the serial number or the firmware version in the Netbackup Device Screen. All four drives will load media when requested but only two actually start to write data. The other still just sit there active and wait till the other drives are available then write info.. I have completed deleted the drives and restarted from scratch to eliminate any path problems and still the problem persists. Any help or guidance would be appreciated. P.S. The master/media servers are HP900 hp-ux
TIA J
TIA J