3Ware 720-0186-00 Manual

Also see for 3WARE 9650SE: User guide User guide Cli guide Guide User guide addendum

Contents

3Ware 720-0186-00 Manual Manual pdf 73 page image

Controller Object Commandswww.3ware.com 66/cx set dpmstat=on|offThis command applies only to 9000 series SX/SE/SA controllers.This command allows you to enable or disable the Drive PerformanceMonitor (DPM).By setting dpmstat to on you can enable the gathering of statistics for driveswhen I/O is running. These statistics can be helpful when troubleshootingperformance problems.You can see whether the Performance Monitor is currently running anddisplay a statistics summary by using the command “/cx show dpmstat[type=inst|ra|ext]” on page 38.For a description of each of the statistics that can be gathered and viewed, see“/cx/px show dpmstat type=inst|ra|lct|histdata|ext” on page 102.DPM is disabled by default since there is overhead in maintaining thestatistics. DPM is also disabled following a reboot or power-on.Note that turning off DPM does not clear the statistical data that has beenrecorded. To clear the data, use the command “/cx/px set dpmstat=clear[type=ra|lct|ext]” on page 106.For more information, see “Drive Performance Monitoring” on page 253 ofthe 3ware SAS/SATA RAID Software User Guide, Version 9.5.1.Example://localhost> /c0 set dpmstat=offSetting Drive Performance Monitoring on /c0 to [off]... Done./cx set rebuild=enable|disable|1..5This command enables or disables the Rebuild Task Schedule defined forcontroller /cx and sets the priority of rebuild versus I/O operations. Whenenabled, rebuild tasks will only be run during the time slots scheduled forrebuilds. If a rebuild is taking place when the schedule is enabled, it will bepaused until the next scheduled time.The priority of rebuild versus I/O operations is specified with 1..5, where 1 ismore resources and 5 the least. Setting the value to 1 gives maximumprocessing time to rebuilds rather than I/O. Setting the value to 5 givesmaximum processing time to I/O rather than rebuilds.Enabling and disabling rebuild schedules is only for 9000 series controllers,however the rebuild rate (1..5) applies to all controllers.7000- and 8000-series controllers have only one setting for Task Rate; itapplies to both rebuild and verify rates. This rate is not persistent following areboot for 7000- and 8000-series controllers.