Apple Xsan 2 User Manual Page 32
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Xsan SANs
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 from 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
32 Chapter 2 Overview of Xsan
- Administrator Guide 1
- Contents 3
- Chapter 3: Plan a SAN 4
- Chapter 4: Set up a SAN 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- 8 Contents 8
- About this book 11
- What’s new in Xsan 2 12
- More information 13
- Notation conventions 14
- Quick SAN setup 15
- Equipment you’ll need 16
- What you need to know 16
- SAN setup instructions 17
- Step 8: Congure the SAN 23
- Step 9: Create a SAN volume 27
- What’s next? 30
- Overview of Xsan 31
- Xsan SANs 32
- Shared SAN volumes 33
- Metadata controllers 33
- Network connections 33
- How Xsan storage is organized 34
- Storage pools 35
- Anities and anity tags 35
- Folders with anities 36
- Metadata and journal data 37
- Stripe at a higher level 37
- Security 38
- Expand storage 38
- Xsan capacities 38
- Plan a SAN 40
- Supported storage devices 41
- Fibre Channel fabric 41
- Ethernet TCP/IP network 42
- Directory services 43
- Plan your SAN 44
- Chapter 3 Plan a SAN 45 45
- Chapter 3 Plan a SAN 47 47
- Chapter 3 Plan a SAN 51 51
- Use switches instead of hubs 52
- Congure RAID systems 53
- Choose RAID levels for LUNs 54
- Chapter 3 Plan a SAN 55 55
- Set up a SAN 56
- Use Xsan Admin 58
- SAN and volume setup summary 58
- Step 5: Set up RAID systems 62
- Step 9: Create a volume 65
- Rename a SAN 69
- Set up another SAN 69
- Manage multiple SANs 69
- Destroy a SAN 70
- Manage SAN storage 71
- Prepare LUNs 72
- Add a volume to a SAN 73
- Add LUNs to an anity tag 75
- Set up a folder anity 77
- Change a folder’s anity 78
- Remove an anity 79
- Set the block allocation size 80
- Enable extended attributes 81
- Change storage pool settings 83
- Maintain SAN volumes 84
- Rename a volume 85
- Check volume fragmentation 85
- Defragment a volume 85
- command-line tool to check 86
- Repair a volume 87
- Check RAID devices 88
- Destroy a volume 88
- Manage clients and users 89
- Add an Xsan serial number 91
- Mount a volume on a client 92
- Change mount options 93
- Manage users and groups 93
- Add SAN users 94
- Delete SAN users 95
- Create groups 95
- Delete groups 96
- Change group membership 96
- Unmount a volume on a client 98
- Remove a client from a SAN 99
- Set SAN user and group quotas 100
- About Xsan quotas 102
- Check user quota status 103
- Help users check quotas 104
- Connection 105
- Action menu 105
- Manage metadata controllers 107
- Select to view 108
- in SAN 108
- Add button 108
- $ sudo cvadmin -e select 110
- $ sudo changeip oldIP newIP 111
- Monitor controller status 114
- Monitor SAN status 115
- Check volume status 116
- Monitor RAID devices 116
- Check free space 117
- Graph SAN resource usage 118
- Set up status notications 119
- View Xsan logs 120
- Check volume clients 121
- Solve SAN problems 122
- $ sudo cvadmin 123
- If le copying doesn’t nish 125
- Upgrade to Xsan 2.3 127
- Version compatibility 128
- Upgrade your SAN software 128
- Step 9: Reenable Spotlight 132
- Step 13: Reenable Spotlight 139
- Combine Xsan controllers and 140
- StorNext clients 140
- Use command-line tools 142
- Â -verbose parameter: 144
- Xsan commands 145
- Copy les or folders (cvcp) 149
- ” below 150
- Option Description 151
- Initialize a volume (cvmkfs) 153
- Mount an Xsan volume 157
- Unmount an Xsan volume 157
- Xsan conguration les 158
- Glossary 159
- 160 Glossary 160
- Glossary 161 161
- Index 163 163
- 164 Index 164
- Index 165 165
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