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Hodnocené. / 5. Na základě hodnocení zákazníků
Array Basics
DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
191
B.3 Mixing Disks from Different Manufacturers/
Capacities
An array can contain disks with different capacities; for example, an
array can include a 36-GB disk and a 72-GB disk. If you mix disks with
different capacities, the smallest disk determines the logical capacity of
all other disks in the array, regardless of RAID level. For example, if a
RAID 0 array contains one 36-GB disk and four 72-GB disks, the
capacity of the array is equivalent to approximately five 36-GB disks. To
maximize disk capacity, use disks of similar size.
NOTE:
The manufacturer does not support mixing of different models,
or manufacturer’s, of drives in the same enclosure.
RAID 50 6 Combination of
RAID 0 (data
striping) and
RAID 5 with
distributed
parity
Better random
performance and data
protection than RAID
5; supports more
drives than RAID 5
Lower storage
capacity than RAID 5
RAID 10
(Also
known as
mirrored)
4 Combination of
RAID 0 (data
striping) and
RAID 1
(mirroring)
Highest performance
and data protection
(can tolerate multiple
drive failures)
High redundancy cost
overhead; because all
data is duplicated,
twice the storage
capacity is required;
requires minimum of
four drives
Volume
Sets
1 Non-RAID, non-
striped mapping
to a single drive
(similar to JBOD)
Ability to use a single
drive to store
additional data
Not protected, lower
performance (not
striped)
Figure 76. RAID Levels Comparison
RAID Level
Min. # of
Drives
Description Strengths Weakness
- User Guide 1
- DataDirect Networks 2
- Important Information 4
- STANDARD WARRANTY 4
- What is in this Guide 6
- Who should use this Guide 6
- International Standards 6
- European Regulations 7
- Battery Safety 10
- Laser Safety 10
- Rack System Precautions 10
- ESD Precautions 11
- Electrical Surges 11
- Data Security 12
- Special Tools and Equipment 12
- Table of Contents 14
- Administrator Software 20
- Arrays & Partitions 20
- Instructions 23
- Introduction 24
- 1.1.1 Enclosure Chassis 27
- 1.2 The Plug-in Modules 28
- 1.2.2 Operators Panel 29
- 1.2.3 LRCI/O Module (FC-AL) 30
- Figure 8. I/O Module 31
- (Figure 9): 32
- 1.2.4 Drive Carrier Module 33
- 1.2.5 Dummy Carrier Modules 34
- Getting Started 38
- 2.2.1 Pre-Requisites 40
- 2.2.2 Unpacking the EF2800 41
- (Figure 18) 43
- (Figure 17) 44
- (Figure 19) 44
- 2.3.1 Parts Check List 45
- 2.3.2 Procedure 45
- (Figure 22) 46
- Figure 21. Module Locations 46
- 2.4.1 Parts Check List 47
- 2.4.2 Procedure 47
- (Figure 25) 48
- Figure 24. Module Locations 48
- Drive 15 49
- 2.7.1 Expansion Enclosures 54
- 2.8.1 Grounding Checks 59
- 2.8.2 Powering On 60
- 2.9 Status LED Indicators 61
- 2.9.3 Disk Drives LEDs 63
- Accessing the EF2800 66
- SAM Software 66
- 3.1 SAM System Requirements 67
- Administrator 69
- (Figure 40) 70
- Figure 40. System Menu 70
- 3.3 Accessing SAM 71
- Figure 41. SAM Login Page 72
- 3.3.3 Logging Off SAM 74
- 3.5.1 Setting SAM Passwords 76
- Setting Up the EF2800 80
- 4.1.2 FC Host Port Loop IDs 81
- 4.1.3 FC Host Port Topology 82
- 4.2.1 FC Device Port Loop IDs 83
- 4.3 Restarting the SMs 84
- 4.3.1 Restarting the SMs 85
- 4.3.2 Shutting Down the SMs 86
- 4.3.3 Putting an SM Offline 87
- 4.3.4 Putting an SM Online 87
- 4.3.5 Killing an SM 88
- (Figure 47) 92
- (Figure 48) 94
- (Figure 49) 95
- 5.2 Managing Arrays 97
- 5.2.3 Reconstructing an Array 98
- 5.3 Managing Partitions 101
- 5.3.2 Adding a Partition 103
- 5.3.3 Expanding a Partition 104
- 5.4 Managing Spares 105
- 5.4.1 Enabling Dynamic Spares 106
- 5.4.3 Managing Global Spares 108
- RAID Management 110
- 6.2 Managing Arrays 111
- 6.2.3 Verifying an Array 114
- 6.2.5 Changing an Array Name 116
- 6.2.6 Trusting an Array 116
- 6.2.7 Deleting an Array 118
- 6.3 Managing Partitions 119
- Figure 56. InfoShield Example 121
- 6.3.4.1 Viewing Known WWNs 122
- 6.3.6 Deleting a Partition 127
- Monitoring System Status 128
- 5.2.1 on page page 74 129
- Page Information on the page 130
- 7.2 Displaying the Event Log 131
- (Figure 59) 132
- Other EF2800 138
- Configurations 138
- Other EF2800 Configurations 139
- 8.1.4 Setting Passwords 141
- 8.4 Changing Management LUNs 144
- EF2800 has good 146
- Cache Setting 147
- 8.9 Rescanning All Ports 149
- 8.10 Pausing I/O 149
- 8.13 Updating Software 154
- Managing Disk Drives & 156
- Enclosures 156
- 9.1 Managing Disk Drives 157
- 9.1.6 Blinking a Drive LED 160
- 9.1.8 Testing a Disk Drive 161
- 9.2 Managing Enclosures 162
- 9.2.1 Setting the EMP LUN 162
- Troubleshooting and 164
- Problem Solving 164
- 10.2 LEDs 166
- 10.2.2 Controller I/O Module 168
- 10.3 Audible Alarm 170
- 10.4 Troubleshooting 171
- 10.4.3 Thermal Control 173
- 10.4.4 Thermal Alarm 174
- 10.5.1 Dummy Carrier Modules 175
- 10.5.2 Auto Start Failure 175
- 10.7 Replacing a Module 176
- 10.7.1.1 Removing the Module 177
- 10.7.2 Ops Panel 178
- 10.7.3 Storage Manager Module 179
- 10.7.3.2 Inserting the Module 180
- 10.7.4 Drive Carrier Module 181
- 10.10 Array Problems 184
- 10.11 EF2800 Problems 185
- Administrator) 185
- 10.14.1 Warnings 188
- EF2800 to mark the 189
- EF2800 are 190
- 10.14.2 Errors 192
- 10.15.1 Collecting Debug Logs 193
- Log Files 194
- 10.18.1 Disk Errors 197
- 10.18.2 Disk Channel Errors 198
- Error Code Description 199
- 10.19 Slow Write Performance 200
- Enclosure Specifications 202
- A.1.5 Power Cords 203
- A.1.6 Environment 203
- A.1.7 Interfaces 204
- A.1.10 RAID Card 206
- Array Basics 208
- B.1 Array Types 209
- B.1.3 RAID 3 210
- B.1.4 RAID 4 211
- B.1.5 RAID 5 211
- B.1.6 RAID 50 211
- B.2 Comparing RAID Levels 212
- Capacities 214
- Accessing Disk Array 216
- Font Terminal 217
- Translations None 217
- Columns 80 217
- Setting Value 218
- Figure 78. System Menu 219
- C.2 Via the Ethernet Port 220
- Click Font to set the 221
- Figure 81. System Menu 222
- To Do this 223
- Select Function 223
- Creating and Managing 228
- (Figure 89) 231
- (Figure 92) 233
- (Figure 93) 235
- (Figure 96) 237
- (Figure 97) 239
- D.2 Managing Arrays 241
- D.2.3 Adding a Partition 245
- D.2.4 Verifying an Array 248
- . The system confirms that 250
- D.2.5 Reconstructing an Array 250
- D.2.7 Changing an Array Name 254
- D.2.9 Trusting an Array 255
- D.2.10 Deleting an Array 257
- D.3 Managing Partitions 258
- D.3.3 Expanding a Partition 266
- (Figure 130) 272
- (Figure 135) 277
- D.3.9 Deleting a Partition 280
- >. The system asks 281
- E.2 Displaying the Event Log 283
- Information 289
- Statistics 294
- Managing Spares 298
- F.1 Managing Dedicated Spares 299
- F.2 Enabling Dynamic Spares 301
- F.3 Managing the Spare Pool 303
- Managing Disk Drives and 306
- G.1 Managing Disk Drives 307
- (Figure 149) 308
- G.1.6 Blinking a Drive LED 315
- G.1.7 Taking Down a Drive 315
- G.1.8 Testing a Drive 316
- G.2 Managing Enclosures 317
- Configuring the EF2800 320
- Manager Module 321
- H.1.4 Other Controller Menu 323
- EF2800 over a host 326
- You have two 327
- H.4.1 Viewing LUN Information 329
- (Figure 166) 330
- EF2800 has good airflow 332
- EF2800 requires airflow 332
- EF2800 continue 332
- H.7 Locking the Cache Setting 334
- H.10 Rescanning All Channels 337
- H.11 Pausing I/O 338
- H.13 Updating Firmware 339
- Firmware 340
- H.13.2 Updating LAN Firmware 341
- LAN Configuration 344
- Glossary 352
- See LAN subsystem 371
- Numerics 379
- Product Shipping Instructions 380
- 96-00147-001 381
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