APC RAID Subsystem SCSI-SATA II User Manual Page 22
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SAS / SATA II NAS System
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User’s Manual
1.5 High Availability
1.5.4.1 Creating Hot Spares
A hot spare drive is an unused online available drive, which is ready to replace a failed
disk drive. In a RAID level 1, 0+1, 3, 5 or 6 Raid Set, any unused online available drive
installed but not belonging to a Raid Set can be defined as a hot spare drive. Hot spares
permit you to replace failed drives without powering down the system. When the RAID
subsystem detects a drive failure, the system will do automatic and transparent rebuild
using the hot spare drives. The Raid Set will be reconfigured and rebuilt in the
background while the RAID subsystem continues to handle system request. During the
automatic rebuild process, system activity will continue as normal, however, the system
performance and fault tolerance will be affected.
IMPORTANT: The hot spare must have at least the same or more
capacity as the drive it replaces.
1.5.4.2 Hot-Swap Disk Drive Support
The RAID subsystem has built-in protection circuit to support the replacement of
SATA II hard disk drives without having to shut down or reboot the system. The
removable hard drive tray can deliver “hot swappable” fault-tolerant RAID solution at a
price much less than the cost of conventional SCSI hard disk RAID subsystems. This
feature is provided in the RAID subsystem for advance fault tolerant RAID protection and
“online” drive replacement.
1.5.4.3 Hot-Swap Disk Rebuild
The Hot-Swap feature can be used to rebuild Raid Sets with data redundancy such as
RAID level 1, 0+1, 3, 5 and 6. If a hot spare is not available, the failed disk drive must
be replaced with a new disk drive so that the data on the failed drive can be rebuilt. If
a hot spare is available, the rebuild starts automatically when a drive fails. The RAID
subsystem automatically and transparently rebuilds failed drives in the background
with user-definable rebuild rates. The RAID subsystem will automatically continue the
rebuild process if the subsystem is shut down or powered off abnormally during a
reconstruction process.
- SAS/SATA II NAS System 1
- Table of Contents 2
- Preface 7
- FCC Compliance Statement 8
- Before You Begin 9
- SAS / SATA II NAS System 10
- User’s Manual 10
- Chapter 1 Introduction 11
- 1.1 Key Features 12
- 1.3 RAID Concepts 16
- RAID Management 20
- 1.4 Array Definition 21
- 1.5 High Availability 22
- 3.2 Powering On 28
- 3.3 Installing Hard Drives 30
- Main Menu 37
- Chapter 5 RAID Management 47
- 5.2 RAID Set Functions 49
- 5.2.2 Delete RAID Set 50
- 5.2.4 Offline RAID Set 54
- 5.2.6 Create Hot Spare 57
- 5.2.7 Delete Hot Spare 57
- 5.2.8 Rescue Raid Set 58
- 5.3 Volume Set Function 59
- 5.3.2 Create Raid 30/50/60 62
- 5.3.3 Delete Volume Set 63
- 5.3.4 Modify Volume Set 64
- 5.3.5 Check Volume Set 67
- 5.3.7 Stop Volume Check 70
- 5.4 Physical Drive 71
- 5.4.4 Identify Enclosure 73
- 5.5 System Controls 75
- 5.5.4 SNMP Configuration 79
- 5.5.5 NTP Configuration 80
- 5.6 Information Menu 84
- 5.6.2 System Information 85
- 5.6.3 Hardware Monitor 86
- PART II proNAS System 95
- Chapter 7 Introduction 96
- Chapter 8 proNAS Manager 104
- 8.1 Volume Manager 105
- 8.1.3 Volume Snapshot 118
- 8.1.3.3 Delete Snapshots 124
- 8.1.4 Volume Replication 126
- 8.1.5 iSCSI 134
- 8.2 Network Manager 142
- 8.2.2 Internet Gateway 146
- 8.2.3 SNMP/MRTG 147
- 8.2.4 Network Test 148
- 8.3 Account Manager 149
- 8.3.1.3 NIS Authentication 152
- 8.4 Share Manager 161
- 8.4.1 Share Management 162
- 8.4.1.2 Applying ACL 163
- 8.4.1.3 Modifying a Share 163
- 8.4.1.4 Deleting a Share 164
- 8.4.3 Protocol Setting 167
- 8.4.3.2 NFS 168
- 8.4.4.1 Group 169
- 8.4.4.2 Account 170
- 8.4.4.3 IP Address 172
- 8.4.6 Duplication 179
- 8.4.7 Default Share 183
- 8.5 System Manager 184
- 8.5.3 Report tab 187
- 8.5.4 Time tab 188
- 8.5.5 Serial Ports tab 189
- 8.5.6 Power tab 190
- 8.5.7 Reboot tab 191
- 8.5.8 Service tab 192
- 8.5.9 Status tab 195
- 8.6 Backup Manager 197
- 8.6.3 Tape Control 204
- 7. Click “Save” again 207
- 8.7 Log Manager 221
- 8.8 Event Manager 222
- Event Purpose 223
- Chapter 9 File Manager 225
- 9.2 Logon to File Manager 227
- Chapter 10 proBackup 231
- 10.3 Create Backup Plan 234
- 10.4 Restore Backup 240
- 10.5 Account Detail 241
- 11.3 ProNAS HA Properties 254
- 11.6 License Registration 258
- 11.7 Event Log Properties 259
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