HP Surestore Tape Library Model 20/700 HP Surestore Bridge FC 2/1 LV and FC 4/ - Page 172

2. Configure the Tape Device Monitor (dm_stape) of the Event Monitoring System (EMS) to not run on the host participating in the tape SAN. The EMS service periodically polls the tape devices to monitor their health. When this occurs while another server is accessing the tape device, backup operations may be disrupted, time out and abort. There are two ways to disable the dm_stape monitor while keeping the Event Monitoring System enabled. - Stop the dm_stape process - Prevent dm_stape from polling Note To completely disable event monitoring, run /etc/opt/ resmon/lbin/monconfig and select [(D)isable Monitoring]. When event monitoring is shut down in this fashion, all monitors will be shut down as well. The monconfig utility is also used to disable individual event monitors. Note that if individual monitors are disabled, they continue to run in the background and send SCSI commands to the devices. The EMS framework ignores the events the monitor might be generating. Stopping the dm_stape process Shutting down the tape device monitor is very difficult. Simply stopping the process does not work because the EMS framework restarts it. Note You must follow these instructions in the order given or the monitor will not be shut down. 1. Disable predictive monitoring requests in var/stm/config/tools/ monitor/predictive.sapcfg by commenting out the "dm_stape" tape drive monitor entries. 2. Delete all monitoring requests for dm_stape: a. Log in as [root]. b. Run /etc/opt/resmon/lbin/monconfig. c. Run the [S] command to get a list of all monitors running. 174 HP-UX Configuration Chapter 7