Hp NetRAID 1 Controller Bedienungsanleitung Seite 11
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Valid RAID Level Changes
To make practicable RAID level changes with HP NetRAID, observe the possible valid RAID level
changes listed in the following table when altering a physical drive or logical drive.
Existing RAID
Configuration
Valid RAID
Configuration Change
Configuration Event
RAID 3 or RAID 5 Optimal RAID 3 or RAID 5 Optimal Expanding capacity
RAID 3 or RAID 5 Optimal RAID 0 Stopping parity
RAID 3 or RAID 5 Optimal RAID 0 Deleting a drive, or adding drives
RAID 3 or RAID 5 RAID 3 or RAID 5 Optimal If a drive fails, you can configure an
Optimal RAID 0 system.
RAID 1 Optimal RAID 3 or RAID 5 Optimal Adding drives
RAID 1 Optimal RAID 0 Adding drives, or deleting a drive
RAID 1 Degraded RAID 0 If a drive fails, you can configure an
Optimal RAID 0 system
RAID 0 RAID 3 or RAID 5 Optimal Adding drives
RAID 0 RAID 1 Optimal Adding a drive
RAID 0 RAID 0 Adding drives
HP NetRAID Valid RAID Configuration Changes
C. Monitor Feature
Monitors send SNMP error messages to the HP NetRAID Assistant or the HP NetServer Assistant if
the disk array is not functioning properly.
Disk array monitors are provided for all operating systems. For information on SNMP agents (the
part of the system that performs information preparation and exchange on behalf of a client or
server) or server standalone, refer to HP NetServer Assistant. Monitors are installed with the
NetRAID utilities, and are included as part of the utility installation process.
Refer to your operating system information and the section Installing HP NetRAID Utilities for
information on installation. Refer to the section Troubleshooting for a list of monitor alerts.
D. Check Consistency Feature
Check Consistency ensures that parity data or mirroring is correct for the selected drives. RAID
levels 3, 5, 30 and 50 use an extra drive to store parity data blocks. Parity is checked between these
parity data blocks and the selected drives when you select this option. RAID levels 1 and 10 use
duplicate data drives; the duplicate data is verified.
NOTE It is strongly recommended that you run a regular consistency check (every 2 - 4
weeks) to ensure that good blocks on hard disk drives are reallocted. Bad blocks
which accumulate can cause rebuild failures is a drive fails.
- HP NetRAID Series User Guide 1
- Audience Assumptions 2
- Contents 3
- Introduction 5
- Features 7
- Onboard Speaker 8
- SCSI Bus 8
- SCSI Connectors 8
- SCSI Termination 8
- SCSI Firmware 9
- Drive Roaming 9
- Hot Swap Manual Replacement 9
- B. RAID Management Features 10
- C. Monitor Feature 11
- D. Check Consistency Feature 11
- Theory of Operation 12
- Precautions 12
- Windows-NT 15
- G. Alarm Feature 18
- I. Autorebuild Feature 19
- Overview 21
- HP NetRAID Assistant 22
- HP NetRAID Config 22
- HP NetRAID Express Tools 22
- Installing Adapter Utilities 23
- Microsoft Windows NT 4.0 24
- Microsoft Windows 3.5x 24
- Starting HP NetRAID Assistant 25
- Config Menu Options 26
- Adapter Menu Options 26
- Physical Drives Menu Options 27
- Logical Drives Menu Options 28
- B. Toolbar Options 30
- Adding a Hot Spare 31
- Changing RAID Levels 32
- Taking a Drive Offline/Online 32
- Configure 34
- Initialize 34
- Objects Menu 34
- ◊ Reset Charge Count Cycles 36
- Check Consistency 37
- Advanced Menu 37
- Configuration Methods 37
- Using Auto Configuration 38
- Logical Drive Settings 38
- User Actions 38
- Using Easy Configuration 38
- Using New Configuration 40
- Using View/Add Configuration 41
- Hot Spares 43
- Batch Initialization 43
- G. Formatting Physical Drives 44
- Rebuilding Failed Disk Drives 45
- H. Exiting HP NetRAID Config 46
- Logical Drive 49
- Physical Drive 49
- SCSI Channel 50
- • RAID level 51
- • Stripe size 51
- • Cache write policy 51
- • Read policy 51
- • I/O policy 51
- Initializing Logical Drives 57
- Media Errors 58
- Formatting Drives Options 58
- Troubleshooting 61
- Monitor Alert List 62
- SCO UNIX Monitor Messages 63
- BIOS Error Messages 64
- Other Error Messages 65
- Questions and Answers 65
- Audible Warnings 67
- Connector Pinouts 69
- Battery Backup Module 71
- Battery Specifications 72
- Connecting Battery Packs 73
- Changing DRAM Modules 75
- HP NetRAID Specifications 77
- Glossary 79
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