Dell OpenManage Server Administrator Version 6.5 Manual de usuario Pagina 114
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l Concatenates n disks as one large virtual disk with a capacity of n disks.
l Data fills up the first disk before it is written to the second disk.
l No redundancy data is kept. When a disk fails, the large virtual disk fails.
l No performance gain.
l No redundancy.
Related Information:
l Organizing Data Storage for Availability and Performance
l Controller-supported RAID Levels
l Number of Physical Disks per Virtual Disk
l Maximum Number of Virtual Disks per Controller
RAID Level 0 (Striping)
RAID 0 uses data striping, which is writing data in equal-sized segments across the physical disks. RAID 0 does not provide data redundancy.
Figure 3-2. Striping Disks
RAID 0 Characteristics:
l Groups n disks as one large virtual disk with a capacity of (smallest disk size)*n disks.
l Data is stored to the disks alternately.
l No redundancy data is kept. When a disk fails, the large virtual disk fails with no means of rebuilding the data.
l Better read and write performance.
- Notes and Cautions 1
- Supported Features 2
- Battery Tasks 10
- Connector Tasks 10
- Physical Disk Tasks 10
- Virtual Disk Tasks 10
- Virtual Disk Specifications 11
- Supported RAID Levels 11
- Enclosure Support 12
- Controller Tasks 13
- Permanently Degraded 26
- Rebuilding 27
- Physical Disks 30
- Other Disk Procedures 31
- Physical Disk Properties 32
- Remove Dead Segments 35
- Prepare to Remove 35
- Initialize 35
- Rebuild 35
- Cancel Rebuild 35
- Online and Offline 36
- Revertible Hot Spare 37
- Instant Encrypt Erase 38
- RAID Controller Batteries 39
- Battery Delay Learn Cycle 42
- BIOS Terminology 43
- Connectors 44
- Connector Health 45
- Connector Properties 46
- Back to Contents Page 48
- Controllers 49
- RAID Controller Features 50
- Read Policy 51
- Write Policy 51
- Cache Policy 51
- Disk Cache Policy 52
- Firmware/Driver Versions 54
- Controller Health 54
- Controller Components 55
- Controller Properties 55
- Available Reports 57
- Set Rebuild Rate 59
- Reset Configuration 60
- Export Log 61
- Set Check Consistency Rate 67
- Set Reconstruct Rate 67
- Set Patrol Read Mode 69
- Start and Stop Patrol Read 70
- Manage Physical Disk Power 72
- Manage Preserved Cache 72
- Manage Encryption Key 72
- Encryption Key 73
- Enabling LKM 73
- Patrol Read Report 74
- Check Consistency Report 74
- Slot Occupancy Report 75
- Manage CacheCade 76
- Resizing the CacheCade 77
- Renaming the CacheCade 77
- Deleting the CacheCade 77
- CacheCade Properties 77
- Enclosures and Backplanes 79
- SMART Thermal Shutdown 80
- Enclosure Management 81
- Enclosure Tasks 83
- Set Asset Data 85
- View Slot Occupancy Report 87
- EMM Properties 87
- Fan Properties 88
- Power Supply Properties 88
- Related information: 92
- Getting Started 93
- Displaying the Online Help 94
- Common Storage Tasks 94
- Understanding Hot Spares 96
- 4e/Si, and 4e/Di Controllers 98
- Required Conditions 100
- Moving the Disks 101
- Overview 102
- Supported Controllers 103
- Supported Enclosures 104
- Storage Health 105
- Select Report 105
- Storage Component Severity 105
- Alerts or Events 106
- Related Information: 107
- Storage Properties 109
- Global Tasks 109
- Storage Controllers 110
- Storage Components 111
- What Is RAID? 112
- Concatenation 113
- RAID Level 0 (Striping) 114
- RAID Level 1 (Mirroring) 115
- RAID 5 Characteristics: 116
- RAID 6 Characteristics: 117
- RAID 50 Characteristics: 117
- RAID 60 Characteristics: 118
- RAID 10 Characteristics: 119
- No-RAID 121
- Troubleshooting 122
- Replacing a Failed Disk 123
- A Rebuild Does Not Work 125
- Redundant Virtual Disks 126
- Virtual Disks 130
- SATA1.5/2s Controllers 131
- Creating Virtual Disks 132
- Expansion 133
- Controllers 134
- Recommendations 135
- Virtual Disk Properties 135
- Connector 0 144
- Physical Disks Selected 144
- Span Edit 145
- Considerations for Format 148
- Virtual Disk Task: Delete 149
- Virtual Disk Task: Rename 150
- Split Mirror 151
- Unmirror 151
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