Maxtor MaxAttach NAS 6000 Specifikace Strana 280
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Chapter #11 - Appendix - Disk Array RAID Concepts 260 000001628
MaxAttach NAS 6000 Administration Guide
Chapter #11 - Appendix - Disk Array RAID Concepts
RAID 0 +1 Mirrored Sets of Striped Drives
11/07/01 -- Revision 2.0.03A
RAID 0 +1 Mirrored Sets of Striped Drives
Description
RAID 0+1 is a dual level array that utilizes multiple RAID 1 mirrored sets into a single
array. Two arrays of striped disks are created. The controller then creates a mirror of the
striped array. This technique is used in the MaxAttach NAS 6000 O/S images on drives
C:\ and D:\. The resultant array is 100% fault tolerant with an two exact images. The
failure of one image usually causes the system to automatically failover to the remaining
image.
Fault Tolerance Cost
The fault cost, like RAID 1 is 50% of total available disk space.
Performance
Each drive in the array is duplicated or mirrored. This eliminates the overhead and delay of
parity. A RAID 0 + 1 array offers high data transfer advantages of striped arrays and
increased data accessibility or reads.
Performance is better than RAID 3, striping with dedicated parity, and RAID 5, striping
with distributed parity.
System performance during a drive rebuild is also better than that of parity based arrays,
since data does not need to be regenerated from parity information, but copied from the
other mirrored drive.
Application Focus
High performance applications where absolute data availability is a must.
Array Size
A minimum of three disks is required to implement RAID 0 + 1, although in practical
terms, most RAID 0 + 1 arrays start at four disks. The maximum number of disks is 16.
- Administration Guide 1
- MaxAttach NAS 6000 1
- ii 000001628 2
- Max Attach NAS 6000 3
- Table of Contents 3
- Detailed Table of Contents 4
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- ix 000001628 9
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- xi 000001628 11
- xii 000001628 12
- xiii 000001628 13
- List of Procedures 14
- xv 000001628 15
- xvi 000001628 16
- xvii 000001628 17
- Who Should Use This Guide 18
- How to Use This Guide 18
- Typographical Conventions 19
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- Mounting Your NAS 6000 21
- 2: Install the Equipment Rack 22
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- 4 000001628 24
- 5 000001628 25
- 6 000001628 26
- 8: Install EMU Cables 27
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- Chapter #2 - Overview 38
- MaxAttach NAS 6000 Hardware 38
- Overview 39
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- 22 000001628 42
- 23 000001628 43
- Front Panel LEDS 45
- Power Supply Status LEDs 46
- LCD Alert Panel 47
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- LCD Alert Panel 48
- 29 000001628 49
- 30 000001628 50
- Expansion Unit 51
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- 33 000001628 53
- 34 000001628 54
- 35 000001628 55
- 36 000001628 56
- Fans Blower 57
- CPU Fans 58
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- 40 000001628 60
- Windows O/S Version 2.0 61
- O/S Overview 62
- Navigation Overview 62
- Welcome Page 63
- Initial System Settings 64
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- Initial System Settings 65
- System Status Summary 66
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- System Status Summary 67
- 48 000001628 68
- Network Configuration 69
- 50 000001628 70
- Network Configuration 70
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- 52 000001628 72
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- 54 000001628 74
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- 68 000001628 88
- 69 000001628 89
- Disks and Volumes 90
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- Disks and Volumes 91
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- 73 000001628 93
- 74 000001628 94
- 75 000001628 95
- 11/07/01 -- Revision 2.0.03A 96
- 78 000001628 98
- Create Schedule 98
- 79 000001628 99
- Disk Defragmenter Page 100
- Users and Groups 101
- 82 000001628 102
- Users and Groups 102
- 83 000001628 103
- 84 000001628 104
- Folders and Shares 105
- 86 000001628 106
- Folders and Shares 106
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- 90 000001628 110
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- 92 000001628 112
- 93 000001628 113
- 94 000001628 114
- 95 000001628 115
- 96 000001628 116
- 97 000001628 117
- 98 000001628 118
- Maintenance Page 119
- Software Update Page 120
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- Maintenance Page 121
- 102 000001628 122
- 103 000001628 123
- Related Topics 123
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- 105 000001628 125
- 106 000001628 126
- 107 000001628 127
- 108 000001628 128
- Re-Image System Drive Page 129
- Services for UNIX 130
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- Services for UNIX 131
- 112 000001628 132
- Explicit Maps 133
- Services for Netware 134
- Help Pages 135
- Disk Array 136
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- Disk Drive Array Organization 138
- Logical Drive Name & 139
- Location 139
- Function 139
- SCSI Channel Structure 140
- 121 000001628 141
- RAID Array Organization 142
- 123 000001628 143
- RAID Array Organization 143
- 124 000001628 144
- Base Unit User Data Arrays 145
- 126 000001628 146
- 127 000001628 147
- 128 000001628 148
- 129 000001628 149
- 130 000001628 150
- Configuration 151
- Network Identification 152
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- Network Identification 153
- Server Appliance Name 154
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- Server Appliance Name 155
- Network Global Settings 156
- DNS Name Resolution 157
- DNS Configuration 158
- 139 000001628 159
- DNS Configuration 159
- TCP/IP Hosts 160
- NetBIOS LMHOSTS File 161
- Keywords 162
- Keyword Definitions 162
- IPX Settings 164
- Network Adapter Interface 165
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- IP Address Configuration 167
- 148 000001628 168
- IP Address Configuration 168
- 150 000001628 170
- WINS Configuration 171
- To change the WINS settings 172
- 153 000001628 173
- Administration Web Site 174
- Teln e t 175
- Network Adapter Interfaces 176
- Network Adapter Interfaces 177
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- 159 000001628 179
- 160 000001628 180
- 161 000001628 181
- Change Administrator Password 182
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- Network Interface Cards 186
- SNMP management consoles 187
- Volume Properties 188
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- Disk Quota Management 189
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- To add a new quota entry 191
- To allow unlimited disk use 191
- To limit disk space 191
- To remove a quota entry 191
- 174 000001628 194
- Chapter Outline 195
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- 177 000001628 197
- 178 000001628 198
- To delete a persistent image 199
- 180 000001628 200
- To work with schedule items 201
- Disaster Recovery 202
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- 185 000001628 205
- 186 000001628 206
- 187 000001628 207
- 188 000001628 208
- AppleTalk Protocol Overview 209
- Managing Folders 210
- To share folders 211
- To manage folders 211
- To navigate among folders 212
- To create a new folder 212
- To delete folders 213
- To open a folder 213
- To compress a folder 214
- To share a folder 215
- Managing Shares 216
- To remove specific protocols 217
- To modify share properties 217
- To set the user limit 218
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- Managing Shares 219
- To remove an NFS client 220
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- Managing Sharing Protocols 225
- To disable sharing protocols 226
- NFS Sharing Protocol 227
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- NFS Sharing Protocol 228
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- To manage NFS locks 230
- To map NFS users and groups 231
- To enable simple NFS maps 232
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- To delete explicit user maps 234
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- FTP Sharing Protocol 236
- To enable FTP logging 237
- To enable FTP Anonymous 237
- To disable FTP anonymous 238
- To add custom messages 238
- Web HTTP Sharing Protocol 239
- NetWare Sharing Protocol 240
- AppleTalk Sharing Protocol 241
- Manage Local Users 243
- To add a user account 244
- To enable the guest account 245
- To remove user accounts 245
- To set the user password 246
- To access user properties 246
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- Manage Local Users 247
- Manage Local Groups 248
- To remove a user account 249
- To add a new member: 250
- To remove a member 251
- Chapter #10 - O/S 2.0 252
- Maintenance 252
- Software Update 253
- Setting Date and Time 253
- Shutting Down the System 253
- Add or Remove Programs 254
- To remove a program 255
- To add a program or driver 255
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- Manual Back Up 257
- Re-Image System Drive 258
- Set Session Timeout 258
- Setting Alert E-Mail 259
- To back up or restore the OS 260
- Terminal Services Client 261
- To use shortcut keys 262
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- Terminal Services Client 263
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- To log off and end a session 265
- To manage application logs 266
- To manage FTP logs 266
- To manage NFS logs 267
- To manage system logs 267
- To manage security logs 268
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- To download NFS logs 270
- 251 000001628 271
- Global Array Manager Overview 272
- 253 000001628 273
- Chapter #11 - Appendix - Disk 274
- Array RAID Concepts 274
- Introduction 275
- Key RAID Technical Methods 276
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- Key RAID Technical Methods 277
- RAID 0 Striping 278
- RAID 1 Mirroring 279
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- 261 000001628 281
- 262 000001628 282
- RAID Benefits Comparison 283
- RAID Functional Comparison 284
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- 266 000001628 286
- 267 000001628 287
- Comparison of Terms 288
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- Comparison of Terms 289
- Chapter #12 - Appendix - SNMP 290
- SNMP Management System 291
- SNMP Agent 291
- SNMP Community 291
- Management Information Base 292
- MaxAttach SNMP Specifications 292
- MIB File Locations and Types 293
- MIB Specifications 294
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- MIB Specifications 295
- Trap Event ID Description 296
- Chapter #13 - Appendix - Disk 297
- Drive Error Codes 297
- Error Code Error Code Cause 298
- Chapter #14 - Appendix - Disk 300
- Array Error Codes 300
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- 282 000001628 302
- Error Codes - EVENTDEF.TXT 303
- Mylex Error Codes Table 303
- Severity 304
- Description 304
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