- Notes, cautions, and warnings
- Dell Technologies PowerEdge RAID Controller 12
- Applications and User Interfaces supported by PERC 12
- Features of PowerEdge RAID Controller 12
- Controller features
- Hardware Root of Trust
- Security Protocol and Data Model (SPDM)
- Device enumeration
- UEFI Secure Boot
- Auto-Configure Behavior (Execute Once)
- Auto-Configure Behavior (Primary and Secondary settings)
- Drive Performance Monitoring (DPM)
- Disk roaming
- Hardware Accelerated I/O
- Non–RAID disks
- Physical disk power management
- Firmware update
- Snapdump
- Physical disk coercion
- PERC H965e support for PowerVault MD24XX enclosure
- Virtual disk features
- Virtual disk initialization
- Background operations
- Drive features
- Fault tolerance
- Controller features
- Install and remove a PERC 12 card
- Driver support for PERC H965i Adapter, PERC H965i Front, PERC H965i MX, and PERC H965e Adapter
- Manage the PERC 12 firmware
- Manage PERC 12 controllers using HII Configuration Utility
- Enter the PERC 12 HII Configuration Utility
- Exit the PERC 12 HII Configuration Utility
- Navigate to the PERC 12 Configuration Utility
- View the HII Configuration Utility dashboard
- Configuration management
- Controller management
- Save persistent events
- Clear persistent events
- Manage snapdump
- Enable security
- Disable security
- Change security settings
- Restore factory default settings
- Manage the SAS Storage link speed
- Manage the PCIe storage interface
- Auto-Configure Behavior Management
- Advanced controller properties
- Virtual disk management
- Device 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 (SEKM)
- Supported controllers for OpenManage Secure Enterprise Key Manager (SEKM)
- Manage the Server Enterprise Key Manager (SEKM) feature
- Disable the Secure Enterprise Key Manager (SEKM) feature
- Manage virtual disks in the SEKM mode
- Manage non–RAID disks in the SEKM mode
- Transition of drives from Local Key Management to Secure Enterprise Key Management
- Troubleshooting issues in PERC 12 series cards
- Virtual drive Blink and Unblink operations are unavailable in iDRAC UI and HII
- Samsung PM893 and Samsung PM897 SATA SSDs are supported on PERC12 firmware version 8.8.0.0.18-26 and later
- The SMART data of SATA SSDs is unavailable from iDRAC
- The default HDD cache policy is not updated to support the read-ahead operation
- Firmware downgrade operation may fail if the firmware version downgraded to does not have the supported feature set
- Unable to downgrade the firmware version of PERC12 to an older revision
- When secured drives are hot-removed or hot-inserted in the server, iDRAC doesn't generate the PD Unlock event
- During a Key Exchange Failure scenario in SEKM mode, native locked drives are Identified as "Locked with Foreign Key" in all interfaces
- After importing the foreign configuration of the associated global hot-spare drive on a PERC12 series controller, the drive is still reported as both Online and global hot-spare
- LED Operations using ESXCLI Commands for H965 and HBA465 Series controller is not available using VMware ESXi OS
- Backplane slot count may be reported as 32 if there is an error with the backplane during discovery or runtime
- Single virtual disk performance or latency in hypervisor configurations
- Unable to discover or detect a PERC card
- Unable to install the Microsoft Windows operating system
- Only UEFI is supported and not BIOS
- A fault firmware state is detected
- Foreign configuration not found in HII
- Degraded state of virtual disks
- Boot-time errors
- Event log errors
- Application issues
- Memory errors
- Preserved Cache state
- Security key errors
- General issues
- Physical disk issues
- Unconfigured drives are not listed in the OS or Hardware Diagnostics
- Physical disk in failed state
- Unable to rebuild a fault tolerant virtual disk
- An NVMe drive is indicated as faulty when moving the drive to new backplane using hot-insertion
- 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
- 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
- The AutoSecure feature is not supported
- HII error messages
- Appendix—RAID description
- Getting help
- Documentation resources
Dell PowerEdge RAID Controller 12 User’s Guide PERC H965i Adapter, PERC H965i Front, PERC H965i MX, and PERC H965e Adapter
Preserved Cache state
The controller preserves the dirty cache from a virtual disk if the virtual disk goes offline or is deleted because of missing physical disks. This preserved dirty cache is called preserved cache and is preserved until you import the virtual disk or discard the cache.
- Import the virtual disk—Power off the system, re-insert the virtual disk and restore the system power. Use the HII Configuration Utility to import the foreign configuration.
- Discard the preserved cache—See Discard preserved cache.
NOTE:It is recommended to clear the preserved cache before reboot using any of the virtual disks present on the controller.
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