Patrol Read Task Rates; Monitoring Virtual Drives - Lenovo ThinkServer RD650 User Manual

12Gb/s MegaRAID SAS Software User Guide
March 2014
7. (Optional) Set Patrol Read to run at a specific time.
The default setting for the patrol read is to start when you click OK on this window. To change the default setting
so that the patrol read starts at a specific time, follow these steps (otherwise, skip this step and proceed to step 8):
a. Deselect the Perform Patrol Read when I press OK check box.
b. Select the month, year, day, and time to start the patrol read.
8. Click OK to enable your patrol read selections.
9. Click Go to enable these Patrol Read options.
To start a patrol read without changing the patrol read properties, follow these steps:
1. Click a controller icon in the left panel of the MegaRAID Storage Manager main menu screen.
2. Select Go To > Controller > Start Patrol Read in the menu bar, or right-click a controller and select Start Patrol
Read from the menu.
3. When prompted, click Yes to confirm that you want to start a patrol read.
10.17.1

Patrol Read Task Rates

You have the option to change the patrol read task rate. The task rate determines the amount of system resources that
are dedicated to a patrol read when it is running. Leave the patrol read task rate at its default setting.
If you raise the task rate above the default, the foreground tasks run slowly, and it might appear that the system is not
responding. If you lower the task rate less than the default, rebuilds and other background tasks might run very slowly
and might not complete within a reasonable time.
10.18

Monitoring Virtual Drives

When the MegaRAID Storage Manager software is running, you can see the status of all virtual drives. If a virtual drive
is operating normally, the icon looks like this:
following:
Green: The server is operating properly.

Yellow: The server is running in a partially degraded state (for example, if a drive has failed); the data is still safe,

but data could be lost if another drive fails.
Orange: The server is running in a degraded state.

Red: The server storage configuration has failed.

When the Logical tab is selected, the panel on the left shows which drives are used by each virtual drive. The same
drive can be used by multiple virtual drives.
To display complete virtual drive information, click the Logical tab in the left panel, and click on a virtual drive icon in
the left panel. The properties appear in the right panel as shown in the following figure. The RAID level, strip size, and
access policy of the virtual drive are set when the virtual drive is configured.
___________________, Continuous Patrolling: Enabled/Disabled,
Patrol Read Task Rate: ___________________.
NOTE Patrol read does not report on its progress while it is running. The
patrol read status is reported only in the event log.
. Color-coded circles appear next to the icon to indicate the
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Chapter 10: Monitoring Controllers and Their Attached Devices
Monitoring Virtual Drives