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
About disabling the HP-UX EMS Tape Device Monitor for a SAN
You should configure the Tape Device Monitor (dm_stape) so it does not run on HP-UX hosts in a SAN configuration. The Tape Device Monitor is a component of the Event Monitoring System (EMS). The EMS service periodically polls the tape devices to monitor their conditions. When a server polls the devices while another server uses a tape device, backup operations may time out and fail.
You can avoid the situation as follows:
To disable EMS completely, run the HP-UX Hardware Monitoring Request Manager and select (K) kill (disable) Monitoring.
Invoke the Hardware Monitoring Request Manager by using the /etc/opt/resmon/lbin/monconfig command.
To configure EMS so it does not log any events or poll devices, set the POLL_INTERVAL value to 0 (zero). The POLL_INTERVAL parameter is in the following HP-UX configuration file:
EMS runs but does not send any SCSI commands.