Users Guide
Table Of Contents
- Dell EMC PowerEdge RAID Controller 10 User’s Guide PERC H345, H740P, H745, H745P MX, and H840
- Contents
- Overview
- Getting Started
- Features
- Controller features
- Virtual disk features
- Hard drive features
- Fault tolerance
- Operating system device enumeration
- Controller mode
- Non-RAID disk
- Deploying the PERC card
- Removing the PERC H345 adapter
- Installing the PERC H345 adapter
- Removing the PERC H345 front card
- Installing the PERC H345 front card
- Removing the PERC H740P adapter
- Installing the PERC H740P adapter
- Removing the PERC H740P mini monolithic
- Installing the PERC H740P mini monolithic
- Removing the PERC H745 adapter
- Installing the PERC H745 adapter
- Removing the PERC H745 front card
- Installing the PERC H745 front card
- Removing the PERC H745P MX adapter card
- Installing the PERC H745P MX adapter card
- Removing the PERC H840 card
- Installing the PERC H840 card
- Part replacement of a PERC card in eHBA mode
- Part replacement of a PERC card in RAID mode with another in eHBA mode
- Driver installation
- Creating the device driver media
- Windows driver installation
- Installing the driver during a Windows Server 2012 R2 and newer installation
- Installing the driver after Windows Server 2012 R2 and newer installation
- Updating PERC 10 driver for existing Windows Server 2012 R2 and newer
- Linux driver installation
- Firmware
- HII configuration utility
- Entering the HII configuration utility
- Exiting the HII configuration utility
- Navigating to Dell PERC 10 configuration utility
- HII Configuration utility dashboard view options
- Configuration management
- Controller management
- Virtual disk management
- Physical disk management
- Hardware components
- Security key management in the HII configuration utility
- Security key and RAID management
- Security key implementation
- Local Key Management
- Creating security key
- Changing Security Settings
- Disabling security key
- Create secured virtual disk
- Secure non-RAID disks
- Secure preexisting virtual disk
- Importing secure virtual disk
- Import secured non-RAID disk
- Dell EMC OpenManage Secure Enterprise Key Manager
- Troubleshooting
- Single virtual disk performance or latency in hypervisor configurations
- Adapter at baseport not responding error message
- BIOS disabled error message
- Configured disks removed or not accessible error message
- Dirty cache data error message
- Discovery error message
- Drive Configuration Changes Error Message
- Windows operating system installation errors
- Firmware fault state error message
- Extra enclosure error message
- Foreign configuration found error message
- Foreign configuration not found in HII error message
- Degraded state of virtual disks
- Memory errors
- Preserved Cache State
- Security key errors
- General issues
- Physical disk issues
- Physical disk in failed state
- Unable to rebuild a fault tolerant virtual disk
- Fatal error or data corruption reported
- Physical disk displayed as blocked
- Multiple disks are inaccessible
- Rebuilding data for a failed physical disk
- Virtual disk fails during rebuild using a global hot spare
- Dedicated hot spare disk fails during rebuild
- Redundant virtual disk fails during reconstruction
- Virtual disk fails rebuild using a dedicated hot spare
- Physical disk takes a long time to rebuild
- SMART errors
- Replace member errors
- Linux operating system errors
- Drive indicator codes
- HII error messages
- Appendix RAID description
- Getting help
- Documentation resources
Linux operating system errors
Virtual disk policy is assumed as write-through error message
Error:
<Date:Time> <HostName> kernel: sdb: asking for cache data failed<Date:Time>
<HostName> kernel: sdb: assuming drive cache: write through
Corrective
Action:
The error message is displayed when the Linux Small Computer System Interface (SCSI) mid-layer asks
for physical disk cache settings. The controller firmware manages the virtual disk cache settings on a per
controller and a per virtual disk basis, so the firmware does not respond to this command. The Linux SCSI
mid-layer assumes that the virtual disk's cache policy is Write-Through. SDB is the device node for a
virtual disk. This value changes for each virtual disk.
For more information about Write-Through cache, see Virtual Disk Write Cache Policies.
Except for this message, there is no effect of this behavior on normal operation. The cache policy of the
virtual disk and the I/O throughput are not affected by this message. The cache policy settings for the
PERC SAS RAID system remain unchanged.
Unable to register SCSI device error message
Error:
smartd[smartd[2338] Device: /dev/sda, Bad IEC (SMART) mode page, err=-5,
skip device smartd[2338] Unable to register SCSI device /dev/sda at line 1
of file /etc/smartd.conf.
Corrective
Action:
This is a known issue. An unsupported command is entered through the user application. User applications
attempt to direct Command Descriptor Blocks to RAID volumes. The error message does not affect the
feature functionality. The Mode Sense/Select command is supported by firmware on the controller.
However, the Linux kernel daemon issues the command to the virtual disk instead of to the driver IOCTL
node. This action is not supported.
Drive indicator codes
The LEDs on the drive carrier indicates the state of each drive. Each drive carrier has two LEDs: an activity LED (green) and a
status LED (bicolor, green/amber). The activity LED blinks whenever the drive is accessed.
Figure 20. Drive indicators
1. Drive activity LED indicator
2. Drive status LED indicator
3. Drive capacity label
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Troubleshooting