IBM TS2340 User Guide - Page 390
Capacity Scaling, Logical Write Protect, Querying Primary and Alternate Path Configurations
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AIX - Tape Utility Program (tapeutil) Note: The changes are effective only while the current device is open. All configuration parameters are reset to their current default values when the device is closed. Capacity Scaling The capacity scaling of the current tape can be queried or set using the interactive interface of the tape utility program and selecting Query/Set Parameters under Tape Commands. Logical Write Protect The logical write protect of the current tape can be queried or set using the interactive interface of the tape utility program and selecting Query/Set Parameters under Tape Commands. Querying Primary and Alternate Path Configurations You can display the primary and alternate path configuration for all devices with the lsdev command. There can be two or more logical devices configured for a single physical device, but the first device configured is labeled the primary device. All other logical devices configured after the first device are labeled as alternate devices. To see this, run the lsdev -Cc tape command and look at the location field in the data. Run the following command: lsdev -Cc tape | grep P For example, you can easily determine how many physical devices are configured with path failover support. You can display the primary and alternate path configuration for any device by running: tapeutil -f/dev/smcx path (where smcx is the logical name of any device) This command shows specific information for the primary path and all alternate paths, such as the logical name of the device, SCSI IDs, the current enabled status, and how many paths are configured for the device. Querying Tape Drive Encryption Settings There is a tape diagnostic and utility function available for encryption to query tape drive encryption settings. The current tape drive encryption settings can be queried using the tapeutil menu option 38 "Get Drive Encryption Settings" or the command line tapeutil -f/dev/name encryption. Following is an example of a correct tape drive configuration with wrt_encryption set to on. If the wrt_encryption attribute is set to no, then the tape drive "Encryption State" is Off. >tapeutil -f/dev/rmt1 encryption Getting drive encryption settings... Encryption settings: Drive Encryption Capable.... Yes Encryption Method........... System Encryption State On 372 IBM Tape Device Drivers Installation and User's Guide