Dell H710P, H310, H810 manual Types Of Virtual Disk Initialization, Consistency Checks

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NOTE: There is a delay to I/O operations when a configured disk is being spun up.

Types Of Virtual Disk Initialization

You can initialize the virtual disks as described in the following sections:

CAUTION: The initializing virtual disks task erases the files and file systems while keeping the virtual disk configuration intact. Initializing a virtual disk destroys all data on the virtual disk.

NOTE: The initialization operations mentioned here are not applicable for Non-RAID disks.

Background Initialization Of Virtual Disks

Background Initialization (BGI) is an automated process that writes the parity or mirror data on newly created virtual disks. BGI does not run on RAID 0 virtual disks. You can control the BGI rate in the Dell OpenManage storage management application. Any change in the BGI rate does not take effect until the next BGI run.

NOTE: You cannot disable BGI permanently. If you cancel BGI, it automatically restarts within five minutes. For information on stopping BGI, see the topic Stopping Background Initialization.

NOTE: Unlike full or fast initialization of virtual disks, background initialization does not clear data from the physical disks.

NOTE: CC/BGI typically causes some loss in performance until the operation completes.

Consistency Check (CC) and BGI perform similar functions in that they both correct parity errors. However, CC reports data inconsistencies through an event notification, but BGI does not. You can start CC manually, but not BGI.

Full Initialization Of Virtual Disks

Performing a full initialization on a virtual disk overwrites all blocks and destroys any data that previously existed on the virtual disk. Full initialization of a virtual disk eliminates the need for the virtual disk to undergo a BGI. Full initialization can be performed after the creation of a virtual disk.

During full initialization, the host is not able to access the virtual disk. You can start a full initialization on a virtual disk by using the Slow Initialize option in the Dell OpenManage storage management application. For more information on using the BIOS Configuration Utility to perform a full initialization, see the topic Initializing Virtual Disks.

NOTE: If the system reboots during a full initialization, the operation aborts and a BGI begins on the virtual disk.

Fast Initialization Of Virtual Disks

A fast initialization on a virtual disk overwrites the first and last 8 MB of the virtual disk, clearing any boot records or partition information. The operation takes only 2–3 seconds to complete and is recommended when you are recreating virtual disks. To perform a fast initialization using the BIOS Configuration Utility, see the topic Initializing Virtual Disks

Consistency Checks

Consistency Check (CC) is a background operation that verifies and corrects the mirror or parity data for fault tolerant virtual disks. It is recommended that you periodically run a consistency check on virtual disks.

You can manually start a CC using the BIOS Configuration Utility or the Dell OpenManage storage management application. You can schedule CC to run on virtual disks using a Dell OpenManage storage management application. To start a CC using the BIOS Configuration Utility, see the topic Checking Data Consistency.

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Contents H710P, and H810 User’s Guide Dell Inc. All Rights Reserved Contents Support For Internal Multiple Controllers Driver InstallationDeploying The Perc Card Management Applications For Perc CardsCacheCade Security Key And RAID Management Security Key Management In The Bios Configuration UtilityTroubleshooting Appendix RAID Description Multiple Disks Become InaccessibleSource Disk Fails During Replace Member Operation Disk Mirroring Specification H310 H710 H710P OverviewGetting Help Specification H310 H710 H710P H810Supported Operating Systems Spans per Disk GroupDocumentation Feedback Contacting DellRelated Documentation Page Configured Spin Down Delay FeaturesPhysical Disk Power Management There are four power saving modes availableBackground Initialization Of Virtual Disks Types Of Virtual Disk InitializationConsistency Checks Full Initialization Of Virtual DisksDisk Roaming Using Disk RoamingConfiguring FastPath-Capable Virtual Disks FastPathRead Virtual Disk MigrationMigrating Virtual Disks WriteConditions Under Which Write-Back Is Employed Virtual Disk Write Cache PoliciesWrite-Back And Write-Through Source RAID Reconfiguration Of Virtual DisksVirtual Disk Read Cache Policies Number Capacity Description LevelDisk by adding Disk into aMirrored virtual One diskAutomatic Replace Member With Predicted Failure Fault ToleranceSmart Feature Reclaims diskPatrol Read Redundant Path Support For Perc H810 OnlyPhysical Disk Failure Detection Using Persistent Hot Spare SlotsUsing Replace Member And Revertible Hot Spares Physical Disk Hot SwappingBattery Transparent Learn Cycle Controller Cache PreservationPage Deploying The Perc Card Removing The Perc ControllerPCIe slot SAS cable connectors Perc adapter Screw Removing and Installing the Perc AdapterInstalling The Perc Controller Removing and Installing the Perc Mini Monolithic ControllerSetting Up Redundant Path Support On The Perc H810 Adapter Support For Internal Multiple ControllersRedundant Path Support Configuration With Two Enclosures Server StoragePage Click Continue Driver InstallationInstalling a driver Popular support tools section, click Drivers and Downloads Updating The Linux Driver Reboot the system when promptedSelect Install from a list or specific location Click on the Hardware tabUpgrading The Kernel Version installed Page Management Applications For Perc Cards Bios Configuration UtilityEntering The Bios Configuration Utility Dell OpenManage Storage ManagementMenu Navigation Controls Exiting The Configuration UtilityTo exit the Bios Configuration Utility Ctrl R Notation Meaning and Use ExampleCtrl Mgmt, and Foreign View Setting Up Virtual DisksNotation Meaning and Use Mgmt, Ctrl Mgmt, and Foreign ViewParameter Description Summary Of RAID LevelsParameterDescription Virtual Disk ManagementCreating Virtual Disks Select Create New VD and press EnterSelecting Virtual Disk Parameters Converting Physical Disk To RAID Capable For Perc H310Checking Data Consistency Converting Physical Disk To Non-RAID For Perc H310Initializing Virtual Disks Running a Data Consistency CheckPage Page Choose Break Mirror and press Enter Break MirrorManaging Preserved Cache Select Manage Ded. HS and press Enter Managing Dedicated Hot SparesSelect Manage Preserved Cache Deleting Virtual Disks Clearing The ConfigurationSelect Clear Config Deleting Disk GroupsVirtual Disks Physical Disks Bios Configuration Utility Menu OptionsVirtual Disk Management VD Mgmt Security property of the Disk Group Virtual Disks Virtual Disk Actions Action DescriptionPhysical Disk Management PD Mgmt Physical Disk ActionsController Management Actions RebuildController Management Ctrl Mgmt Physical Disk Management Foreign Configuration ViewSetting LED Blinking Replacing An Online Physical Disk Creating Global Hot SparesRemoving Global Or Dedicated Hot Spares Performing a Manual Rebuild Of An Individual Physical Disk Restrictions and LimitationsStopping Background Initialization Enabling Bios Stop On Error Enabling Boot SupportEnabling Boot Support For a BIOS-Enabled Controller Controller ManagementEntering The Uefi RAID Configuration Utility Uefi RAID Configuration UtilityRestoring Factory Default Settings Disabling Auto ImportDevice Settings menu Exiting The Uefi RAID Configuration UtilityConfiguration Options Controller Management MenuEnclosure Management Virtual Disk ManagementPhysical Disk Management Menu CacheCade CacheCade Virtual Disk CharacteristicsConfiguring And Managing CacheCade Virtual Disks Select Create CacheCade Virtual Disk and press Enter CacheCade Virtual Disk ManagementCreating CacheCade Virtual Disks Deleting CacheCade Virtual Disks Reconfiguring CacheCade Virtual DisksAutomatic Reconfiguration Of CacheCade Virtual Disks Manual Resizing Of CacheCade Virtual DisksPage Security Key Implementation Security Key Management In The Bios Configuration UtilitySecurity Key And RAID Management Local Key Management LKMCreating a Security Key Changing The Security KeySecuring Pre-Existing Virtual Disks Deleting a Security KeyCreating Secured Virtual Disks Highlight the Secure Disk Group option and press Enter Instant Secure Erase Troubleshooting Security Key ErrorsSecured Foreign Import Errors Failure To Delete Security Key Failure To Instant Secure Erase Task On Physical DisksDiscovery Error Message TroubleshootingBios Error Messages Extra Enclosure Error MessageMissing Virtual Disks Error Message Missing Disks In Virtual Disk Error MessagePrevious Configuration Of Disks Removed Error Message Drive Configuration Changes Error Message Dirty Cache Data Error MessageBios Disabled Error Message Virtual Disks Degraded Error Message Adapter At Baseport Not Responding Error MessageVirtual Disks Offline Error Message Action Cable problems, press any key or Y to continueFirmware Fault State Error Message Virtual Disks Partially Degraded Error MessageMemory Or Battery Problem Error Message Foreign Configuration Found Error MessageInvalid SAS Topology Detected Error Message Foreign Configuration Not Found In Ctrl R Error MessagePrevious Configuration Cleared Or Missing Error Message Multibit ECC Errors Detected Error MessagesDegraded State Of Virtual Disks Configured Disks Removed Or Not Accessible Error MessageBattery Discharged Or Disconnected Error Message Preserved Cache State Memory ErrorsGeneral Issues Perc Card Has Yellow Bang In Device ManagerFatal Error Or Data Corruption Reported Physical Disk IssuesUnable to Rebuild a Fault Tolerant Virtual Disk Physical Disk In Failed StateRebuilding a Failed Physical Disk Multiple Disks Become InaccessibleVirtual Disk Fails During Rebuild Using a Global Hot Spare Virtual diskPhysical Disk Takes a Long Time To Rebuild Smart ErrorsVirtual Disk Fails Rebuild Using a Dedicated Hot Spare Issue General disk fails Corrective Replace Member ErrorsLinux Operating System Errors ErrorReboot to the new kernel Unable To Register Scsi Device Error MessageInstall a DKMS-enabled driver package Driver Does Not Auto-Build Into New KernelDisk Carrier LED Indicators Activity LED Status LEDRAID Terminology Appendix RAID DescriptionSummary Of RAID Levels Disk StripingParity Data Disk MirroringSpanned RAID Levels Example of Distributed Parity RAID
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H310, H710, H710P, H810 specifications

Dell offers a range of storage controller technologies, notably the H810, H710, H710P, and H310, which cater to different enterprise needs. These controllers are designed to support various storage configurations, enhancing overall system performance and reliability.

The Dell H810 is a high-performance PCIe 3.0 RAID controller that supports up to eight internal drives and is particularly suited for demanding workloads. It features advanced RAID levels including RAID 0, 1, 5, 6, 10, 50, and 60, providing flexibility for various data protection strategies. The H810 also supports up to 32TB of storage capacity, making it suitable for environments that require substantial data management capabilities.

The H710 is another powerful RAID controller, widely recognized for its balance of performance and cost-efficiency. It features 1GB of cache memory, which aids in accelerating read and write operations. The H710 supports the same RAID levels as the H810 and allows for up to 512MB of non-volatile memory. This ensures data integrity even in the event of a power failure, making it reliable for critical applications.

The H710P is an enhanced version of the H710, with a significant upgrade in its cache capabilities. It offers 2GB of battery-backed cache memory, further enhancing data processing speeds and improving responsiveness. The H710P is ideal for intensive workloads and virtualization, where rapid access to data is essential. This controller also includes features such as RAID storage pooling, intelligent data tiering, and support for multiple virtual disks.

Finally, the H310 is a cost-effective option for small to medium-sized businesses or those with less demanding storage requirements. It offers similar RAID support as the higher-end controllers but operates with a simpler architecture. The H310 features 512MB of cache, providing sufficient performance for regular workloads without the additional complexities of more advanced controllers.

In summary, Dell's H810, H710, H710P, and H310 storage controllers each serve distinct purposes, providing various features, technologies, and performance characteristics tailored to different business needs. From high-capacity storage solutions to user-friendly setups, Dell’s offerings ensure that organizations can efficiently manage their data storage requirements.
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