Network Card User Manual
Table Of Contents
- Dell PowerEdge RAID Controller (PERC) H310, H710, H710P, and H810 User’s Guide
- Overview
- Features
- Physical Disk Power Management
- Types Of Virtual Disk Initialization
- Consistency Checks
- Disk Roaming
- FastPath
- Virtual Disk Migration
- Virtual Disk Write Cache Policies
- Virtual Disk Read Cache Policies
- Reconfiguration Of Virtual Disks
- Fault Tolerance
- The SMART Feature
- Patrol Read
- Redundant Path Support (For PERC H810 Only)
- Physical Disk Failure Detection
- Using Persistent Hot Spare Slots
- Physical Disk Hot Swapping
- Using Replace Member And Revertible Hot Spares
- Controller Cache Preservation
- Battery Transparent Learn Cycle
- Deploying The PERC Card
- Driver Installation
- Pre-Installation Requirements For Windows Driver Installation
- Creating The Device Driver Media For Windows Driver Installation
- Downloading Drivers From The Dell Systems Service And Diagnostic Tools Media For Windows
- Downloading Drivers From The Dell Support Website For Windows
- Installing Driver During a Windows Server 2008/2008 R2 Installation
- Installing Windows Server 2008/2008 R2 For A New RAID Controller
- Updating Existing Windows Server 2008 Or Windows Server 2008 R2
- Updating The Linux Driver
- Management Applications For PERC Cards
- Dell OpenManage Storage Management
- BIOS Configuration Utility
- Virtual Disk Management
- Creating Virtual Disks
- Selecting Virtual Disk Parameters
- Converting Physical Disk To RAID Capable For PERC H310
- Converting Physical Disk To Non-RAID For PERC H310
- Initializing Virtual Disks
- Checking Data Consistency
- Running A Data Consistency Check
- Importing Or Clearing Foreign Configurations Using The VD Mgmt Menu
- Importing Or Clearing Foreign Configurations Using The Foreign Configuration View Screen
- Break Mirror
- Managing Preserved Cache
- Managing Dedicated Hot Spares
- Deleting Virtual Disks
- Deleting Disk Groups
- Clearing The Configuration
- BIOS Configuration Utility Menu Options
- Physical Disk Management
- Controller Management
- UEFI RAID Configuration Utility
- CacheCade
- Security Key And RAID Management
- Troubleshooting
- BIOS Error Messages
- Discovery Error Message
- Extra Enclosure Error Message
- Cache Data Lost Error Message
- Missing Disks In Virtual Disk Error Message
- Previous Configuration Of Disks Removed Error Message
- Missing Virtual Disks Error Message
- Dirty Cache Data Error Message
- BIOS Disabled Error Message
- Drive Configuration Changes Error Message
- Adapter At Baseport Not Responding Error Message
- Offline Or Missing Virtual Drives With Preserved Cache Error Message
- Virtual Disks Offline Error Message
- Virtual Disks Degraded Error Message
- Virtual Disks Partially Degraded Error Message
- Memory Or Battery Problem Error Message
- Firmware Fault State Error Message
- Foreign Configuration Found Error Message
- Foreign Configuration Not Found In
Error Message - Previous Configuration Cleared Or Missing Error Message
- Invalid SAS Topology Detected Error Message
- Multibit ECC Errors Detected Error Messages
- Configured Disks Removed Or Not Accessible Error Message
- Battery Discharged Or Disconnected Error Message
- Degraded State Of Virtual Disks
- Memory Errors
- Preserved Cache State
- 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 Become Inaccessible
- Rebuilding A Failed Physical Disk
- Virtual Disk Fails During Rebuild Using A Global Hot Spare
- Virtual Disk Fails During Rebuild Using A Dedicated Hot Spare
- Physical Disk Fails During Reconstruction On Redundant Virtual Disk
- 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
- Disk Carrier LED Indicators
- BIOS Error Messages
- Appendix: RAID Description
For example, in a four-disk system using only disk striping (used in RAID 0), segment 1 is written to disk 1, segment 2 is
written to disk 2, and so on. Disk striping enhances performance because multiple physical disks are accessed
simultaneously, but disk striping does not provide data redundancy.
Figure 6. Example of Disk Striping (RAID 0)
Disk Mirroring
With mirroring (used in RAID 1), data written to one disk is simultaneously written to another disk. If one disk fails, the
contents of the other disk can be used to run the system and rebuild the failed physical disk. The primary advantage of
disk mirroring is that it provides complete data redundancy. Both disks contain the same data at all times. Either of the
physical disks can act as the operational physical disk.
Disk mirroring provides complete redundancy, but is an expensive option because each physical disk in the system must
be duplicated.
NOTE: Mirrored physical disks improve read performance by read load balance.
Figure 7. Example of Disk Mirroring (RAID 1)
Spanned RAID Levels
Spanning is a term used to describe the way in which RAID levels 10, 50, and 60 are constructed from multiple sets of
basic, or simple RAID levels. For example, a RAID 10 has multiple sets of RAID 1 arrays where each RAID 1 set is
considered a span. Data is then striped (RAID 0) across the RAID 1 spans to create a RAID 10 virtual disk. Similarly, RAID
50 and RAID 60 combine multiple sets of RAID 5 or RAID 6 respectively with striping.
Parity Data
Parity data is redundant data that is generated to provide fault tolerance within certain RAID levels. In the event of a disk
failure, the parity data can be used by the controller to regenerate user data. Parity data is present for RAID 5, 6, 50, and
60.
The parity data is distributed across all the physical disks in the system. If a single physical disk fails, it can be rebuilt
from the parity and the data on the remaining physical disks. RAID level 5 combines distributed parity with disk striping.
Parity provides redundancy for one physical disk failure without duplicating the contents of the entire physical disks.
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