Users Guide
Table Of Contents
- Dell Technologies PowerEdge RAID Controller 11 User’s Guide PERC H755 adapter, H755 front SAS, H755N front NVMe, and PERC H755 MX adapter
- Contents
- Dell Technologies PowerEdge RAID Controller 11
- Applications and User Interfaces supported by PERC 11
- Features of PowerEdge RAID Controller 11
- Controller features
- Virtual disk features
- Hard drive features
- Fault tolerance
- Install and remove a PERC 11 card
- Safety instructions
- Before working inside your system
- After working inside your system
- Remove the PERC H755 adapter
- Install the PERC H755 adapter
- Remove the PERC H755 front SAS card
- Install the PERC H755 front SAS card
- Remove the PERC H755N front NVMe card
- Install the PERC H755N front NVMe card
- Remove the PERC H755 MX adapter
- Install the PERC H755 MX adapter
- Driver support for PERC 11
- Firmware
- Manage PERC 11 controllers using HII configuration utility
- Enter the PERC 11 HII configuration utility
- Exit the PERC 11 HII configuration utility
- Navigate to Dell PERC 11 configuration utility
- View the HII Configuration utility dashboard
- Configuration management
- Controller management
- Clear controller events
- Save controller events
- Save debug log
- Enable security
- Disable security
- Change security settings
- Restore factory default settings
- Auto configure behavior
- Manage controller profile
- Advanced controller properties
- Virtual disk management
- Physical disk management
- Hardware components
- Security key management in HII configuration utility
- Security key and RAID management
- Security key implementation
- Local Key Management
- Create a security key
- Change Security Settings
- Disable security key
- Create a secured virtual disk
- Secure a non-RAID disk
- Secure a pre-existing virtual disk
- Import a secured non-RAID disk
- Import a secured virtual disk
- Dell Technologies OpenManage Secure Enterprise Key Manager
- Supported controllers for OpenManage Secure Enterprise Key Manager
- Manage enterprise key manager mode
- Disable enterprise key manager mode
- Manage virtual disks in enterprise key manager mode
- Manage non–RAID disks in enterprise key manager mode
- Migration of drives from local key management to enterprise key management
- Troubleshooting
- Single virtual disk performance or latency in hypervisor configurations
- 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
- 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
- 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
- Drive removal and insertion in the same slot generates a foreign configuration event
- SMART errors
- Replace member errors
- Linux operating system errors
- Drive indicator codes
- HII error messages
- Appendix RAID description
- Getting help
- Documentation resources
Patrol Read
The Patrol read feature is designed as a preventative measure to ensure physical disk health and data integrity. Patrol read
scans and resolves potential problems on configured physical disks. The Dell storage management applications can be used to
start patrol read and change its behavior.
The following is an overview of patrol read behavior:
● Patrol read runs on all disks on the controller that are configured as part of a virtual disk, including hot spares.
● Patrol read does not run on physical disks that are not part of a virtual disk or are in Ready state.
● The amount of controller resources dedicated to patrol read operations adjusts based on the number of outstanding disk I/O
operations. For example, if the system is processing a large number of I/O operations, then patrol read uses fewer resources
to allow the I/O to take a higher priority.
● Patrol read does not run on disks that are involved in any of the following operations:
○ Rebuild
○ Replace member
○ Full or background initialization
○ CC
○ RLM or OCE
NOTE: By default, patrol read automatically runs every seven days on configured SAS and SATA hard drives.
For more information about patrol read, see the Dell OpenManage documentation at www.dell.com/openmanagemanuals.
Physical disk failure detection
If a disk fails and it is replaced with a new disk, the controller will automatically start a rebuild on the new disk. See,
Configured slot behavior. Automatic rebuilds can also occur with hot spares. If you have configured hot spares, the controller
will automatically try to use them to rebuild the degraded virtual disk.
Using persistent hot spare slots
NOTE: The persistent hot spare slot feature is disabled by default.
The PERC 11 series can be configured so that the system backplane or storage enclosure disk slots are dedicated as hot spare
slots. This feature can be enabled using the Dell storage management application.
Once enabled, any slots with hot spares configured automatically become persistent hot spare slots. If a hot spare disk fails or is
removed, a replacement disk that is inserted into the same slot automatically becomes a hot spare with the same properties as
the one it is replacing. If the replacement disk does not match the disk protocol and technology, it does not become a hot spare.
For more information on persistent hot spares, see the Dell OpenManage documentation at www.dell.com/openmanagemanuals.
Configured slot behavior
This feature is similar to persistent hot spare slot behavior. If a redundant VD is configured to the system and if a drive is
replaced, the configured slot will automatically rebuild or copyback on the inserted drive regardless of the data on the drive. This
operation will overwrite the data on the drive.
Table 7. Drive state/operation
Drive state/operation Unconfigured
slot
Slot configured in VD
Insert unconfigured drive into the system Ready Rebuild or copyback start
Insert configured drive into the system Foreign
● Rebuild or copyback start
● Original drive data lost
Insert configured locked drive into the system
(unlockable)
Foreign Cryptographic Erase (If configured VD is not
secured)
● Rebuild or copyback start
Features of PowerEdge RAID Controller 11 25