Avago Technologies MegaRAID Fast Path Software - Manual (Page 314)

Page 314 LSI Corporation Confidential | July 2011
MegaRAID SAS Software User Guide Chapter 7: MegaRAID Storage Manager Window and Menus | MegaRAID Storage Manager Main Menu
7.2.2 Shield State This section describes the Shield state in the MegaRAID Storage Manager software.
Physical devices in MegaRAID firmware transit between different states. If firmware
detects a problem or a communication loss for a physical drive, it transitions the
physical drive to a bad (FAILED/UNCONF BAD) state. To avoid transient failures, an
interim state called the Shield state appears before marking the physical drive as bad
state.
The Shield state is an interim state of a physical drive for diagnostic operations. The
results of the diagnostic tests determine if the physical drive is good or bad. If any of
the diagnostics tests fail, the physical drive will transition to BAD state (FAILED or
UNCONF BAD).
The three possible Shield states are Unconfigured - Shielded, Configured - Shielded,
and Hotspare - Shielded.
7.2.3 Shield State Physical View Follow these steps to view the Shield state under the Physical view tab.
1. Click the Physical tab in the device tree.
The icon indicates a Shield state.
The Physical View shield state is shown in the following figure.
Figure 180: Physical View Shield State