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12 en | RAID Functions: Introduction SCSI to SATA RAID Subsystem | Administrator’s Manual
F.01U.027.802 | V1 | 2006.11 Bosch Security Systems
1.3.3 RAID0
Disk Striping
RAID0 provides the highest performance but no redundancy. Data in the logical drive is
striped (distributed) across several physical drives.
Fig. 1.4 RAID0
1.3.4 RAID1
Disk Mirroring
RAID1 mirrors the data stored in one hard drive to another. RAID1 can only be performed with
two hard drives. If there are more than two hard drives, RAID (0+1) will be automatically
applied.
Fig. 1.5 RAID1
RAID0
Minimum Disks Required 2
Capacity N
Redundancy No
RAID1
Minimum Disks Required 2
Capacity N/2
Redundancy Yes
- SCSI to SATA RAID Subsystem 1
- Table of Contents 3
- 1.1 Logical Drive 9
- 1.2 Logical Volume 9
- 1.3 RAID Levels 10
- 1.3.2 JBOD 11
- 1.3.1 NRAID 11
- 1.3.3 RAID0 12
- 1.3.4 RAID1 12
- 1.3.5 RAID (0+1) 13
- 1.3.6 RAID3 14
- 1.3.7 RAID5 14
- 1.4 Spare Drives 15
- 1.5 Rebuild 17
- 1.5.2 Manual Rebuild 18
- Fig. 1.15 Logical Volume 19
- 1.6.3 Limitations 21
- 2 RAID Planning 23
- 2.1.7 Optimization mode 24
- 2.1.8 What RAID level? 24
- 2.1.9 Any spare drives? 24
- 2.2 Configuring the Array 25
- 2.3 Operation Theory 26
- 2.4 Tunable Parameters 29
- Security 33
- 3.2 Communication Parameters 35
- 3.2.2 Terminal Emulation: 36
- 3.2.3 Baud Rate 36
- 3.2.5 View Statistics 37
- 3.2.6 Set IP Address 37
- 3.3 Out-of-Band via Ethernet 38
- 3.3.2 Other Concerns 39
- 3.4 Telnet Connection 40
- 3.5 Secure Link over SSH 41
- 4 LCD Screen Messages 42
- 4.3 Logical Drive Status 43
- 4.4 Logical Volume Status 44
- 4.5 Drive Status 44
- 4.6 Channel Status 45
- 4.8 View and Edit Event Logs 47
- 5 LCD Keypad Operation 48
- 5.2.5 Periodic Cache Flush 50
- 5.3 View Connected Drives: 51
- 5.4 Creating a Logical Drive 52
- 5.4.4 Maximum Drive Capacity 53
- 5.4.5 Spare Drive Assignments 53
- 5.4.6 Disk Reserved Space 53
- 5.4.7 Write Policy 53
- 5.4.8 Initialization Mode 54
- 5.4.9 Stripe Size 54
- NOTICE! 55
- 5.5 Creating a Logical Volume 56
- 5.8.3 Rebuild Settings 62
- 5.9.6 Media Scan 67
- 5.9.7 Write Policy 68
- 5.12.1 Viewing IDs 70
- 5.12.2 Adding a Channel ID 70
- 5.12.3 Deleting a Channel ID 71
- 5.12.4 Data Rate 72
- 5.13 System Functions 74
- Disable Password 75
- 5.13.3 Reset Controller 75
- 5.13.4 Shutdown Controller 75
- 5.13.5 Controller Maintenance 75
- 5.13.6 Saving NVRAM to Disks 76
- 5.13.8 Adjust LCD Contrast 77
- 5.14 Controller Parameters 78
- 5.15 Drive Utilities 80
- 6 Terminal Screen Messages 82
- 6.2 Main Menu 83
- 6.3 Quick Installation 83
- 6.4 Logical Drive Status 84
- 6.5 Logical Volume Status 85
- 6.6 Drive Status 86
- 6.7 Channel’s Status 87
- Fig. 6.10 Event Logs Screen 89
- 7 Terminal Operation 90
- 7.2 Caching Parameters 91
- 7.2.5 Periodic Cache Flush 93
- 7.4 Creating a Logical Drive 95
- 7.5 Creating a Logical Volume 99
- Fig. 7.18 Selection Sub-menu 100
- Fig. 7.19 Confirm Box 100
- Fig. 7.22 Partition List 101
- Fig. 7.23 Confirm Box 101
- Fig. 7.26 Mapping Result Page 103
- Fig. 7.28 Logical Drives List 105
- 7.9.5 Expand Logical Drive 110
- 7.9.6 Add Drive 110
- 7.9.8 Media Scan 111
- 7.9.9 Write Policy 111
- 7.11.2 Disk Reserved Space 114
- 7.11.3 Identifying Drives 115
- Fig. 7.49 Flash All Drives 116
- Fig. 7.54 Existing ID List 118
- 7.12.2 Adding an ID 119
- 7.12.3 Deleting an ID 119
- 7.12.5 View Chip Information 120
- 7.13 System Functions 121
- 7.13.3 Changing the Password 122
- 7.13.4 Setting a New Password 122
- 7.13.5 Disabling the Password 122
- 7.13.6 Reset Controller 123
- 7.13.7 Shutdown Controller 123
- 7.13.8 Adjust LCD Contrast 123
- LCD User Interface 124
- 7.14 Controller Parameters 125
- 7.14.3 Saving NVRAM to Disks 126
- 7.15 View Drive Information 129
- 7.16 Drive Utilities 129
- 8.1 Host-side Parameters 131
- 8.1.4 LUNs per Host ID 133
- 8.1.5 LUN Applicability 134
- 8.1.6 Peripheral Device Type 134
- 8.1.7 In-band (SCSI channel) 134
- Selecting Head Ranges 138
- Selecting Cylinder Ranges 138
- 8.2 Drive-side Parameters: 139
- 8.2.2 Drive I/O Timeout 140
- Queuing (NCQ) Support 141
- 8.2.5 Drive Delayed Write 142
- 9 Enclosure Management 143
- 10 Data Integrity 151
- 10.2 Scheduled Maintenance 154
- 10.2.2 Task Scheduler Options 155
- 10.4 Disk Array Parameters 159
- 11 Array Expansion 161
- Expand Logical Drive: 162
- Re-striping 162
- 11.3 Mode 1 Expansion: 163
- 11.4 Mode 2 Expansion 166
- 11.6 Expand Logical Volume 170
- 12 S.M.A.R.T. Configuration 176
- Technology) 179
- 12.4 Configuration Procedure 181
- 13.2 AV Optimization Mode 185
- 14.1 Basic RAID Management 186
- Max. no. of LD 16 32 188
- Max. no. of LV 816 188
- Max. no. of LUN 128 1024 188
- 14.2 Advanced Features 189
- 14.3 Caching Operation 191
- 14.4 RAID Expansion 192
- 14.5 S.M.A.R.T. Support 192
- 14.6 Redundant Controller 193
- 14.7 Data Safety 194
- 14.8 System Security 195
- 14.9 Environment Management 195
- 14.10 User Interface 196
- 14.11 High Availability 196
- 15.1 Upgrading Firmware 197
- Fig. 15.3 Sending Files 199
- 16 Event Messages 200
- 16.1.3 General Target Events 204
- 16.1.4 Controller Events 205
- 16.2 Event Description 206
- 16.2.3 General Target Events 223
- 16.2.4 Controller Events 228
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