“When communicating with SCSI-controlled robotic peripherals on an IBM RS6000 system, Media Manager utilizes a SCSI passthru driver called ovpass. ovpass is not required if the only device being used is the IBM 3590 B11 tape stacker.”
上面这段话引自《NetBackup Media Manager Device Configuration Guide for UNIX, Windows, and Linux》。正确创建ovpass设备，对NBU for AIX的实施来说是非常重要的。
