Troubleshooting, Logical drive degraded, System cmos boot order – Dell PERC 4/SI User Manual
Page 64: General problems
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Troubleshooting
Dell™ PowerEdge™ Expandable RAID Controller 4/Di/Si and 4e/Di/Si User's Guide
Hard Disk Drive Related Issues
.
Logical Drive Degraded
A logical drive is in a degraded condition when one hard drive in its span has failed or is offline. For example, when a RAID 10 logical drive consisting of two
spans of two drives each can sustain a drive failure in each span and be a degraded logical drive. The RAID controller has the fault tolerance to undergo a
single failure in each span without compromising data integrity or processing capability.
The RAID controller provides this support through redundant arrays in RAID levels 1, 5, 10 and 50. The system can still work properly even with a single disk
failure in an array, though performance can be degraded to some extent.
To recover from a degraded logical drive, rebuild the failed drive in each array. Upon successful completion of the rebuild process, the logical drive state
changes from degraded to optimal. For the rebuild procedure, see
Rebuilding Failed Hard Drives
in
RAID Configuration and Management
.
System CMOS Boot Order
If you intend to boot to the controller, ensure it is set appropriately in the system's CMOS boot order. Refer to the system documentation for your individual
system.
General Problems
describes general problems you might encounter, along with suggested solutions.
Table 6-1. General Problems
NOTE:
Only the first eight logical drives can be used as bootable devices.
Problem
Suggested Solution
The device displays in Device Manager but has a yellow bang (exclamation
point).
Reinstall the driver. See the driver installation procedures in
Driver
Installation
.
Windows driver does not appear in Device Manager.
Power off the system and reset the card.
"No Hard Drives Found" message appears during a CD-ROM installation of
Windows 2000 or Windows 2003 because of the following causes:
1.
The drive is not native in the operating system.
2.
The logical drives are not configured properly.
3.
The controller BIOS is disabled.
The corresponding solutions to the three causes of the message are:
1.
Press <F6> to install the RAID Device Driver during installation.
2.
Enter the BIOS Configuration Utility to configure the logical drives.
See
RAID Configuration and Management
for procedures to configure
the logical drives.
3.
Enter the BIOS Configuration Utility to enable the BIOS. See
RAID
Configuration and Management
for procedures to configure the logical
drives.