HP VMA-series Memory Arrays Bedienungsanleitung Seite 170
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Chapter 10 - Performance Tuning and Troubleshooting
170
VMA-series Memory Array Installation and Service Guide
HP-AM456-9002A Rev 01
system, do so for traditional RAIDs and solid-state drives; that is, 63 sectors per
track.
Two Utilities included in the Violin Utilities package, the
vpartial utility and the
vring utility, enable you to identify these issues.
This section describes how the Violin Utilities may be used to diagnose 4kB
alignment issues and provides instructions for correcting these problems on
Linux and Windows hosts.
• Checking Flash 4kB Alignment and Partial Pages on page 170
• Checking Flash 4kB Alignment and Request Ring on page 170
• Addressing 4kB Alignment Issues on Linux Hosts on page 171
• Addressing 4kB Alignment Issues on Windows Hosts on page 171
Checking Flash 4kB Alignment and Partial
Pages
The
vpartial utility shows the number of read/write I/O requests processed
and partial 4kB flash pages.
For more information on the
vpartial utility, see vpartial on page 158.
Checking Flash 4kB Alignment and Request
Ring
The
vring utility debugs the internal Memory Array I/O request ring at a low
level, and checks for unaligned flash device access.
Look for the transfer sizes under the column labeled
SIZE. If most of the lines
show
4096, full 4kB accesses are being done to the Memory Array hardware,
which is optimal. In an unaligned access case, you will see lines alternate
# vpartial
Violin Memory, Inc.
Version: vtms-linux, <date>
Device: vtmsa
Index: 0
-- Target Unaligned / Partial Counts --
Completed read I/O's: 1995280246
Unaligned host buf reads: 0
Flash partial page reads: 10326
Completed write I/O's: 1903433508
Unaligned host buf writes: 0
Flash partial page writes: 4535553
- HP VMA-series Memory Array 1
- LEGAL NOTICES 2
- COMPLIANCE INFORMATION 3
- Notice Description 3
- Table of Contents 12
- List of Figures 13
- List of Tables 15
- Document Organization 17
- Document Conventions 18
- Safety Icons 18
- Typographical Conventions 19
- Security 19
- Reference Documents 19
- Contacting HP 19
- Product Overview 21
- VMA-series Overview 23
- Features 24
- Physical Components 24
- System LEDs 25
- Power Supplies 27
- Figure 1.6 Fan Module 28
- Management Interfaces 29
- Storage Interfaces 29
- System Specifications 31
- 53 for more information 32
- Supported Operating Systems: 32
- VIMM Types 34
- VIMM Configurations 35
- VIMM Slot Locations 35
- 42–Module Configuration 36
- Operation 37
- Installing the Array 39
- Rack-Mounting the Chassis 42
- Equipment Rack 42
- Connecting Power 47
- Power Requirements 47
- Connecting Equipment Ground 48
- Connecting Management Network 50
- Connecting the Serial Cable 50
- Connecting the Ethernet Cable 51
- Ethernet 52
- Host Computer 53
- Memory Gateway 54
- Powering up the Memory Array 56
- Configuring the Array 57
- Memory Array Default Settings 58
- Connecting to the CLI 59
- Changing the Admin Password 62
- Changing the Hostname 64
- Configuring DHCP Settings 65
- Displaying DHCP Status 65
- Enabling DHCP 65
- Disabling DHCP 66
- Configuring the DNS Name 67
- Ethernet 0 68
- Setting the DNS Mode 69
- Syslog Host 71
- Formatting the Memory Array 74
- Connecting via SSH 76
- Connecting via Telnet 76
- Setting the Number of Columns 79
- Setting the Pagination Mode 82
- HH:MM:SS 84
- Retrieving the MAC Address 88
- RAID Group 90
- Displaying Fan Status 94
- Displaying Alarms and Logs 96
- Displaying the Current Alarms 96
- Displaying the System Log 96
- Displaying the Messages Log 97
- Rebooting the Memory Array 98
- Rebooting the System 98
- Canceling a Scheduled Reboot 98
- Upgrading the System Software 100
- Using SCP 101
- Length 102
- Displaying the Upgrade Path 105
- HP-AM456-9002A Rev 01 106
- Servicing the Array 107
- Safety Precautions 108
- ESD Precautions 108
- Testing the LEDs 109
- Testing the System LEDs 109
- Testing the VIMM LEDs 110
- Replacing the Fans 111
- PORT 1 PORT 2 112
- Replacing VIMMs 113
- Host Utilities 115
- Linux Drivers 117
- Linux Drivers Overview 118
- Kernel Development Package 119
- GCC Compiler 120
- Libaio Development Package 120
- Installing Linux Drivers 120
- Removing the Linux Drivers 125
- Unloading the Linux Driver 127
- /dev/vtmsa<n> 131
- Partitions 133
- Windows Drivers 135
- Windows Driver Overview 136
- Installing Prerequisites 136
- Installing Windows Drivers 137
- Click the Next button 138
- Chapter 8 - Windows Drivers 140
- (driver-storport-Dx.x.x.zip) 141
- Removing the Windows Drivers 143
- Removing the Violin Utilities 148
- Violin Utilities 149
- Running the Violin Utilities 150
- Violin Utilities Reference 150
- Option Description 164
- Product Models 179
- Appendix A - Product Models 180
- Compliance Information 181
- Lithium Battery Caution 183
- Cabinet Safety Precautions 183
- European Union RFI Statement 184
- Korea RFI Statement 185
- Canada RFI Statement 185
- Australia C-Tick Label 185
- Alarm Reference 187
- Interpreting Alarm LEDs 188
- Message Commands 189
- Service-Affecting Alarms 190
- Port Service-Affecting Alarms 192
- RAID Service-Affecting Alarms 193
- Appendix C - Alarm Reference 194
- VIMM Service-Affecting Alarms 196
- Non-Service Affecting Alarms 196
- 1 or 2. The Alarm LED is not 200
- 1) or bottom (2) 207
- CLI Reference 209
- Appendix D - CLI Reference 210
- Context Navigation 211
- Typing CLI Commands 211
- General Commands 213
- <context_level> 214
- Chassis Context Commands 221
- Board 0 Context Commands 223
- Slot Context Commands 227
- VIMM Context Commands 230
- VIMM-summary Context Commands 233
- Output Description 235
- Controller Context Commands 236
- Ethernet 0 Context Commands 238
- Fan-tray Context Commands 243
- Fan Context Commands 244
- CLI Context Commands 245
- Cancels the oam_cli session 250
- RAID Context Commands 251
- RAID Group Context Commands 253
- Maps Context Commands 255
- System Context Commands 257
- Alarms Context Commands 273
- Boot-params Context Level 275
- LED-state Context Commands 277
- Logging Context Commands 279
- In-memory Context Commands 281
- Category Context Commands 285
- Syslog Context Commands 287
- Status Context Commands 290
- Sw-upgrade Context Commands 294
- Uptime Context Commands 297
- Version Context Commands 298
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