HP B6960-90078 manual Device Open Problem, Using Unsupported Scsi Adapters on Windows

	Troubleshooting
	Troubleshooting Devices and Media
	Device Open Problem
	The error message Cannot open device (not owner) appears when
	trying to use a DDS device.
Action	Check whether you are using a medium that is incompatible with the
	Media Recognition System. Media used with DDS drives must comply
	with the Media Recognition System.
	Using Unsupported SCSI Adapters on Windows
	System fails due to usage of unsupported SCSI adapters with backup
	devices.
	Typically, the problem occurs when the SCSI device was accessed by
	more than one Media Agent at the same time or when the length of the
	transferred data defined by the device’s block size was larger than the
	length supported by the SCSI adapter.
Action	You can change the Block size in the Advanced Backup Options for
	the backup specification.
	For information on supported SCSI adapters, refer to the HP OpenView
	Storage Data Protector Software Release Notes.
	For detailed steps, refer to the online Help index keyword “setting
	advanced options for devices and media”.
	Medium Quality Statistics
	This functionality is used to detect any problems with media while
	they’re still in their early stages. Before each medium is ejected from a
	drive, Data Protector queries the SCSI log sense command for medium
	read and write statistic information. The information is written to the
	media.log file.
	The medium quality statistics feature is disabled by default. To enable it,
	set the following global variable: Ob2TapeStatistics=1 in the Global
	Options file.
	Global Options file is located:
	• on UNIX: /etc/opt/omni/options in the
	• on Windows: <Data_Protector_home>\config\option

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