Dell PowerVault MD3000 Manuel d'utilisateur Page 7
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About Your System 7
About Your System
The Dell™ PowerVault™ MD3000 is a 3U rack-mounted external Redundant Array of Independent
Disks (RAID) enclosure capable of accommodating up to 15 3.0-Gbps, Serial-Attached SCSI (SAS)
disks. The RAID enclosure can be daisy-chained with up to two additional MD1000 expansion units,
providing access to a maximum of 45 disks in the entire storage array. Connectivity between the
RAID enclosure and the host server is provided by Dell SAS 5/E Host Bus Adapters (HBAs).
Overview
The RAID enclosure is designed for high availability, offering redundant access to data storage. It
features dual active/active RAID controller modules, redundant power supplies, and redundant fans.
The RAID enclosure is designed for high-performance environments: two-node clusters or multi-
host storage access for up to four servers.
Storage management can be either in-band through the SAS connection, or out-of-band using an
Ethernet connection.
NOTE: Dell recommends that you configure your MD3000 to use both in-band and out-of-band management
paths. Establishing all management connections to a RAID enclosure provides additional paths in the case of
a management connection failure.
Enclosure Features
Features include:
• Direct-connect support for fully redundant, two-node Microsoft
®
Windows
®
Clusters
• Support for up to four Windows, SUSE
®
, or Red Hat
®
Linux
®
host servers
• U chassis for rack mounting
• Two redundant, hot-pluggable RAID controller modules in one of two supported configurations:
– Dual RAID controller modules with single SAS In port connectors on each controller
– Dual RAID controller modules with dual SAS In port connectors on each controller
• Two redundant, hot-pluggable power supply/fan modules
• 512 MB of mirrored cache on each RAID controller module
• Battery backup unit in each RAID controller module that protects against cache data loss for up to
72 hours
• Support for up to 45 3.5" SAS physical disks
• Support for up to 255 virtual disks
- Hardware Owner’s Manual 1
- Notes, Notices, and Cautions 2
- Contents 3
- 4 Contents 4
- 6 Contents 6
- About Your System 7
- Modular Disk Storage Manager 8
- Hardware Features 9
- 10 About Your System 10
- 12 About Your System 12
- RAID Controller Modules 14
- 16 About Your System 16
- RAID controller module 16
- Cache Functions and Features 17
- Write-Through Cache 18
- 20 About Your System 20
- Cabling Your RAID Enclosure 21
- Cabling the Enclosure 22
- Using Your RAID Enclosure 33
- Physical Disk States 34
- Supported RAID Levels 35
- Hot Spares and Rebuild 37
- Global Hot Spares 38
- Hot Spare Operation 38
- Rebuild 38
- RAID Operations and Features 39
- Disk Group Operations 40
- Segment Size Migration 41
- Disk Group Expansion 41
- Disk Group Defragmentation 41
- Disk Group Operations Limit 42
- Disk Migration 42
- Advanced Features 44
- Host Types 45
- Snapshot Virtual Disks 46
- Virtual Disk Service 46
- Volume Shadow-Copy Service 47
- Virtual Disk Copy 47
- Virtual Disk Recovery 48
- Redundancy and Non-Redundancy 49
- Multi-Path Software 49
- Host Bus Adapters 50
- Host Cabling for Redundancy 50
- Updating Enclosure Firmware 54
- Recommended Tools 55
- Battery Unit 60
- Removing the Control Panel 64
- Installing the Control Panel 65
- 1 midplane 68
- Start-Up Routine 69
- Troubleshooting a Fan 72
- Invalid Enclosure 74
- ECC Errors 74
- PCI Errors 74
- Critical Conditions 75
- Noncritical Conditions 75
- Getting Help 77
- AutoTech Service 78
- Dell Enterprise Training 79
- Problems With Your Order 79
- Product Information 79
- Before You Call 80
- Contacting Dell 80
- 82 Getting Help 82
- 84 Getting Help 84
- 86 Getting Help 86
- 88 Getting Help 88
- 90 Getting Help 90
- 92 Getting Help 92
- 94 Getting Help 94
- 96 Getting Help 96
- 98 Getting Help 98
- 100 Getting Help 100
- Printers, and Projectors 100
- 102 Getting Help 102
- Glossary 103
- 104 Glossary 104
- 106 Glossary 106
- 108 Glossary 108
- 110 Glossary 110
- Index 111 111
- 112 Index 112
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