Apple Xsan User Manual Page 14
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Xsan Storage Area Networks
A SAN is a way of connecting computers and storage devices so computers have
fast, shared access to les while making it easy for administrators to expand storage
capacity.
An Xsan SAN consists of:
Shared data volumes Â
RAID systems that provide storage space that is protected against disk failure Â
At least one computer acting as a metadata controller that combines RAID arrays Â
and presents their storage to clients as volumes that behave like local disks
Client computers that access storage in accordance with established permissions Â
and quotas
Underlying Fibre Channel and Ethernet networks Â
The following illustration shows the hardware components of an Xsan SAN.
Metadata
controller
Clients
Standby
controller
Metadata RAID array
(LUN)
Fibre
Channel switch
Ethernet (public)
Ethernet (private)
Intranet/
Internet
RAID arrays
(LUNs)
Ethernet switches
14 Chapter 1 Overview of Xsan
- Administrator Guide 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- About This Book 9
- What’s New in Xsan 2 10
- Version Compatibility 10
- Overview of Xsan 13
- Xsan Storage Area Networks 14
- Shared SAN Volumes 15
- Metadata Controllers 15
- Network Connections 15
- How Xsan Storage Is Organized 16
- Storage Pools 17
- Anities and Anity Tags 17
- Folders with Anities 18
- Security 19
- Expanding Storage 20
- Xsan Capacities 20
- Supported Computers 21
- Supported Storage Devices 22
- Fibre Channel Fabric 22
- Ethernet TCP/IP Network 23
- Directory Services 24
- Planning Your SAN 25
- Conguring RAID Systems 34
- Preparing LUNs 37
- Using Xsan Admin 39
- SAN and Volume Setup Summary 39
- Step 5: Set Up RAID Systems 42
- Step 8: Congure the SAN 44
- Step 9: Create a Volume 46
- Renaming a SAN 49
- Removing a SAN 49
- Managing Multiple SANs 50
- Setting Up Additional SANs 50
- Managing SAN Storage 51
- Adding a Volume to a SAN 53
- Adding LUNs to a Storage Pool 55
- Setting Up a Folder Anity 57
- Removing an Anity 58
- Enabling Extended Attributes 61
- Renaming a Volume 62
- -f option: 64
- Defragmenting a Volume 64
- command to check the 65
- Repairing a Volume 66
- Destroying a Volume 66
- Managing Clients and Users 67
- Adding an Xsan Serial Number 68
- Mounting a Volume on a Client 70
- Managing Users and Groups 71
- Adding SAN Users 72
- Deleting SAN Users 72
- Creating Groups 73
- Deleting Groups 73
- Changing Group Membership 73
- Unmount button 75
- Select the volume 75
- Select to view 75
- computers that have 75
- the volume mounted 75
- Removing a Client from a SAN 77
- About Xsan Quotas 80
- Checking User Quota Status 81
- Helping Users Check Quotas 83
- Connection 84
- Action menu 84
- Managing Metadata Controllers 86
- Adding a Metadata Controller 87
- $ sudo cvadmin -e select 89
- Monitoring Controller Status 92
- Monitoring SAN Status 93
- Checking Volume Status 94
- Monitoring RAID Devices 94
- Available space 95
- Graphing SAN Resource Usage 96
- Viewing Xsan Logs 98
- Checking Volume Clients 99
- Solving SAN Problems 100
- $ sudo cvadmin 101
- Interruption 103
- StorNext Clients 105
- Terminology 106
- Licensing 106
- Using the Command Line 108
- Notation Conventions 109
- Xsan Commands 110
- To enter interactive mode: 111
- ” below 116
- Examples 120
- Mounting an Xsan Volume 121
- Xsan Conguration Files 122
- Glossary 123
- 12 4 Glossary 124
- Glossary 12 5 125
- Index 12 7 127
- 12 8 Index 128
- Index 12 9 129
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