Veritas NetBackup™ Device Configuration Guide
- Introducing device configuration
- Section I. Operating systems
- About configuring tape drive device files in AIX
- Creating AIX no rewind device files for tape drives
- About device drivers and files for HP-UX persistent DSFs
- About configuring persistent DSFs
- About HP-UX legacy device drivers and files
- About configuring legacy device files
- Creating legacy SCSI and FCP robotic controls on HP-UX
- About the required Linux SCSI drivers
- About configuring robot and drive control for Linux
- Installing/reinstalling the sg and the st drivers
- About Solaris robotic controls
- About Solaris tape drive device files
- Configuring Solaris SAN clients to recognize FT media servers
- Section II. Robotic storage devices
- Robot overview
- Oracle StorageTek ACSLS robots
- About removing tapes from ACS robots
- Robot inventory operations on ACS robots
- NetBackup robotic control, communication, and logging
- NetBackup robotic control, communication, and logging for UNIX systems
- ACS robotic test utility
- ACS configurations supported
- Device configuration examples
Using multiple tape densities on AIX
After you create the device files for your tape drives, you can configure densities on the drives that support multiple densities. Exabyte 8500C is an example of a tape drive for which you can use different densities.
AIX supports two configuration settings for density, although not all tape drives support multiple densities. The default density for both density setting 1 and density setting 2 is 0, which means maximum density.
The following procedure is an example of using the chdev command to modify the density settings. Alternatively, you can use the System Manager Interface Tool (SMIT).
To modify the density settings
- The following commands modify both of the tape drive device files:
chdev -l tapedev -a density_set_1=density
chdev -l tapedev -a density_set_2=density
The following describe the arguments to the command options:
tapedev is the logical identifier for the drive, such as rmt0 or rmt1.
density is a decimal number from 0 to 255 that represents the wanted density. Zero (0) selects the default density for the tape drive, which is usually the drive's high density setting. Permitted values and their meanings vary with different types of tape drives.
To use density setting 1, use the following no rewind on close device file when you configure the device in NetBackup:
To use density setting 2, use the following no rewind on close device file when you configure the device in NetBackup: