Dell PowerEdge RAID Controller H710 Uživatelský manuál stáhnout pdf (Strana 87)

RAID 6 combines dual distributed parity with disk striping. This level of parity allows for two disk failures without

duplicating the contents of entire physical disks.

Figure 8. Example of Distributed Parity (RAID 5)

NOTE: Parity is distributed across multiple physical disks in the disk group.

Figure 9. Example of Dual Distributed Parity (RAID 6)

NOTE: Parity is distributed across all disks in the array.

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H710P, and H810 1
User’s Guide 1
Notes, Cautions, and Warnings 2
Contents 3
Overview 9
Supported Operating Systems 10
Getting Help 10
Contacting Dell 11
Related Documentation 11
Documentation Feedback 11
Features 13
Consistency Checks 14
Disk Roaming 15
FastPath 15
Virtual Disk Migration 16
Write-Back And Write-Through 17
Table 3. RAID Level Migration 18
Fault Tolerance 20
The SMART Feature 20
Patrol Read 21
Physical Disk Hot Swapping 22
Controller Cache Preservation 23
Deploying The PERC Card 25
1. PCIe slot 26
2. SAS cable connectors (2) 26
3. PERC adapter 26
4. screw (1) 26
PERC H810 28
Driver Installation 31
Updating The Linux Driver 33
Upgrading The Kernel 34
BIOS Configuration Utility 37
Menu Navigation Controls 38
Setting Up Virtual Disks 39
Virtual Disk Management 41
Initializing Virtual Disks 43
Checking Data Consistency 43
Break Mirror 46
Managing Preserved Cache 46
Managing Dedicated Hot Spares 47
Deleting Virtual Disks 48
Deleting Disk Groups 48
Clearing The Configuration 48
Virtual Disk Actions 51
Physical Disk Actions 52
Controller Management Actions 53
Physical Disk Management 54
Creating Global Hot Spares 55
Restrictions and Limitations 56
Controller Management 57
Disabling Auto Import 58
Configuration Options 59
Controller Management Menu 59
Physical Disk Management Menu 60
Enclosure Management 60
CacheCade 61
Security Key Implementation 65
Creating A Security Key 66
Changing The Security Key 66
Deleting A Security Key 67
Instant Secure Erase 69
Secured Foreign Import Errors 69
Troubleshooting 71
BIOS Disabled Error Message 73
Memory Errors 78
Preserved Cache State 78
General Issues 78
Physical Disk Issues 79
SMART Errors 81
Replace Member Errors 82
Linux Operating System Errors 82
Disk Carrier LED Indicators 84
Appendix: RAID Description 85
Disk Mirroring 86
Spanned RAID Levels 86
Parity Data 86

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