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Hot Swapping Disk Drives
70 Snap Server Administrator Guide
Hot Swapping Disk Drives
The term hot swap refers to the ability to remove and add components to a system
without the need to turn off the server or interrupt client access to files. Snap
Servers permit hot swapping for disk drives. The Snap Server 14000, with dual fan
and power supplies, also permits hot swapping for these components (see “Hot
Swapping Fans and Power Supply Modules” on page 119).
When to Hot Swap Disk Drives
When available storage space is not at a premium, most administrators prefer to
configure a RAID set with a hot spare that automatically takes the place of a failed
drive. This solution assures that client access to file systems is not interrupted. In
environments where configuring a hot spare is not possible, you may need to hot
swap a drive.
Hot Swapping Disk Drives
You can hot swap disk drives on Snap Server RAIDs 1 or 5 by following the three
basic steps outlined next:
1
Using the Administration Tool, remove the failed drive from the RAID.
Navigate to the
Storage > RAID Sets
screen, and click the name of the RAID set
that contains the failed drive. In the Actions column, click the failed drive’s
Remove
link, and then follow the on-screen instructions. (For more details, see
“Replacing Disk Drives on a RAID” on page 64.)
2
Physically remove the failed drive from its bed, and insert the new drive.
The procedures for the physical removal and replacement of a disk drive for Snap
Server
s are explained in the next section.
3
Configure the new drive as part of the RAID.
When you remove a drive from a Snap Server, the affected RAID transitions to
degraded mode. It will remain in degraded mode until the newly inserted drive
is configured as a member of the RAID set via the Administration Tool. This
procedure is discussed in detail on page 64.
- Snap Server 1
- Administrator Guide 1
- ETRUST ANTIVIRUS 6
- Contents 7
- Chapter 6 Data Protection 93 10
- Audience 13
- Tips and Cautions 13
- Document Organization 14
- Typographical Conventions 15
- Related Documents 16
- Contacts 17
- Getting Started 19
- Networking 20
- Security 20
- Feature Description Page 21
- Applications 22
- • Discovering Snap Servers — 23
- • Getting Information — 23
- • Setting IP Addresses — 23
- The Administration Tool 24
- Chapter 1 Getting Started 7 25
- Chapter 2 27
- Connecting to the Network 30
- Initial Configuration Tasks 48
- •Server number — 49
- • Serial number — 49
- Registering your Server 53
- Networking Options 55
- Protocol Default Comments 56
- Configuring TCP/IP 57
- • Half-duplex Ethernet — 58
- • Full-duplex Ethernet — 58
- Configuring TCP/IP Settings 59
- to update 60
- Option Settings 60
- Configuring Windows Access 61
- Configuring NFS Access 63
- Configuring a DHCP Server 66
- Connecting from a Client 67
- Web Browser (HTTP) 69
- Storage Configuration and 71
- Management 71
- Storage Configuration Options 73
- Create Snapshot Share 75
- Before You Begin 76
- Using the RAID Storage Wizard 77
- Creating a RAID 78
- Creating a Volume 79
- Creating a Share 80
- Managing and Repairing RAIDs 81
- Determining RAID Set Status 82
- Adding Disk Drives to a RAID 83
- Managing Volume Usage 85
- Disabling Quotas 87
- Tracking Volume Usage 87
- Hot Swapping Disk Drives 88
- Security Management 91
- Default Security Settings 92
- Physically Secure the Server 93
- Configure Users and Groups 94
- Macintosh and FTP Access 95
- • Changing UIDs or GIDs — 96
- Directory 98
- Joining an NIS Domain 101
- Web View Authentication 102
- Secure HTTPS 102
- Caution 106
- How Permissions are Applied 110
- Supported Permissions 110
- Data Protection 111
- Data Backup Options 112
- Backup Express for GuardianOS 113
- PowerQuest DataKeeper 114
- Backup Solutions 115
- Using Snapshots 116
- Recurring Snapshots 117
- Managing the Snapshot Pool 117
- Accessing Snapshots 118
- Snapshot Rollback 121
- Using Backup Express for 122
- GuardianOS 122
- Components 123
- Backup Modes 123
- Restore Modes 124
- Planning Backup Procedures 124
- Backup Schemes 125
- Backing Up Data 126
- Restoring Data 127
- Defaults 128
- Managing the Catalog 130
- The Disaster Recovery Files 132
- Disaster Recovery Procedures 134
- Restoring the Data from Tape 136
- Chassis Failure 137
- Chapter 7 139
- Using Status Screens 142
- Using the Event Log 143
- Local Scanner and Log Views 146
- Using the Local Scanner 147
- The Local Scanner Window 148
- Setting the Scan Options 149
- Setting Selection Options 150
- Setting Display Options 150
- Viewing Directory Paths 151
- About Signature Updates 151
- Setting Schedule Options 152
- Setting Incoming Options 153
- Understanding Alert Options 156
- The Report Tab 156
- Setting Alert Filter Options 157
- Other Local Scanner Options 158
- Using the Move Directory 159
- Using the Log Viewer Window 159
- The Log Viewer List 160
- Troubleshooting 161
- Using Maintenance Modes 162
- Snap Server Specifications 165
- Feature Specification 166
- Taiwan Statement 170
- Appendix B 171
- General Guidelines 173
- • Recover — 178
- • Nsrretrieve — 178
- Upgrading Backup Express for 181
- Jukebox Support 181
- Upgrade Notes 182
- Glossary 183
- Term Definition 184
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