Lenovo ThinkServer RD330 MegaRAID SAS Software User Guide - Page 187

MegaRAID SAS Software User Guide Chapter 5: MegaRAID Command Tool | Patrol Read-Related Controller Properties 5.9 Patrol Read-Related Controller Properties You can use the commands in this section to select the settings for Patrol Read. A Patrol Read scans the system for possible drive errors that could lead to drive failure, then takes action to correct the errors. The goal is to protect data integrity by detecting drive failure before the failure can damage data. The corrective actions depend on the virtual drive configuration and the type of errors. Patrol Read affects performance; the more iterations there are, the greater the impact. 5.9.1 Set Patrol Read Options Use the command in the following table on the selected controller(s) to set the Patrol Read options. Table 49: Set Patrol Read Options Convention Description MegaCli -AdpPR -Dsbl|EnblAuto|EnblMan|Start|Stop|Info | {-SetStartTime yyyymmdd hh} | maxConcurrentPD -aN| -a0,1,2|-aALL Sets Patrol Read options on a single controller, multiple controllers, or all controllers: -Dsbl: Disables Patrol Read for the selected controller(s). -EnblAuto: Enables Patrol Read automatically for the selected controller(s). This means Patrol Read will start automatically after the controller initialization is complete. -EnblMan: Enables Patrol Read manually for the selected controller(s). This means that Patrol Read does not start automatically; it has to be started manually by selecting the Start command. -Start: Starts Patrol Read for the selected controller(s). -Stop: Stops Patrol Read for the selected controller(s). -Info: Displays the following Patrol Read information for the selected controller(s): • Patrol Read operation mode • Patrol Read execution delay value • Patrol Read status SetStartTime yyyymmdd hh: Set the start time for the patrol read in year/month/day format. maxConcurrentPD: Sets the maximum number of concurrent drives that patrol read runs on. 5.9.2 Set Patrol Read Delay Interval Use the command in the following table on the selected controller(s) to set the time between Patrol Read iterations. Table 50: Set Patrol Read Delay Interval Convention Description MegaCli -AdpPRSetDelay -Val -aN|-a0,1,2|-aALL Sets the time between Patrol Read iterations on a single controller, multiple controllers, or all controllers: -Val: Sets delay time between Patrol Read iterations. The value is time of delay in hours. A value of zero means no delay and an immediate restart. 5.10 BIOS-Related Properties 5.10.1 Set or Display Bootable Virtual Drive ID You can use the commands in this section to select the settings for BIOS-related options. Use the command in the following table to set or display the ID of the bootable virtual drive. Page 187