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144 Sun StorageTek SAM Archive Configuration and Administration Guide • Version 4, Update 6, 04/07
Calculating Total Preview Request
Priority
The numeric priority of preview requests is determined by the combination of static
and dynamic factors. Higher numbers correspond to higher priority. A static priority
factor is set when the request is generated. Its effect does not change the overall
priority after the request is generated and is waiting to be satisfied. A dynamic
priority factor can increase or decrease the overall priority of a request while the
request is waiting to be satisfied.
The total priority for a preview request is the sum of all priority factors. It is
calculated as follows:
total priority = vsn_priority + wm_priority + (age_priority *
time_in_sec_as_preview_request)
Setting Up a Preview Request Priority
Scheme
Change the default preview request FIFO scheme only if there are compelling
reasons to do so, such as the following:
■ Ensure that staging requests are processed before archive requests.
■ Ensure that archive requests gain top priority when a file system is about to fill
up.
■ Push requests that use a specific group of media to the top of the preview request
list.
- Sun StorageTek 1
- Storage Archive Manager (SAM) 1
- Archive Configuration and 1
- Administration Guide 1
- Contents 3
- Contents v 5
- ▼ To Load a Cartridge 31 5
- ▼ To Unload a Cartridge 32 5
- Contents vii 7
- ▼ To Enable Disk Archiving 95 7
- Contents ix 9
- Tables xvii 17
- ■ Solaris 10 19
- How This Book Is Organized 20
- Using UNIX Commands 20
- Shell Prompts 21
- Typographic Conventions 21
- Related Documentation 22
- Third-Party Web Sites 23
- Licensing 24
- Installation Assistance 24
- Sun Welcomes Your Comments 24
- Overview 25
- Storage Devices 27
- Sun SAM-Remote Software 28
- Sun Cluster (HA-SAM) 28
- File System Manager 29
- Accounts 30
- Assigning Privilege Levels 31
- System Manager 33
- Using Automated Libraries and 35
- Manually Loaded Drives 35
- Automated Library Operations 36
- To Manually Load a Cartridge 39
- Labeling a Cartridge 40
- To Audit a Volume 41
- Arguments for auditslot(1M) 42
- Using a Cleaning Cartridge 43
- # chmed +C 50:77 44
- # chmed –count 20 50:77 44
- Arguments for chmed(1M) 45
- To Clean a Tape Drive 46
- Tape Drive Auto-Cleaning 46
- To Clear Media Errors 47
- Exporting Cartridges 49
- Arguments for samexport(1M) 53
- To Enable Load Notification 54
- To Load a Cartridge 55
- To Unload a Cartridge 56
- To View a Library Catalog 56
- Archiving 57
- Archiver Daemons 58
- Archive Sets 58
- Archiving Operations 59
- Chapter 3 Archiving 37 61
- Continuous Archiving 62
- Scanned Archiving 62
- Chapter 3 Archiving 39 63
- Chapter 3 Archiving 41 65
- Chapter 3 Archiving 43 67
- Sample Default Output 68
- Chapter 3 Archiving 45 69
- TABLE 3-1 69
- Data Verification 70
- About the archiver.cmd File 71
- The archiver.cmd File 72
- Chapter 3 Archiving 49 73
- TABLE 3-2 73
- Example archiver.cmd File 74
- Using Archiver Directives 75
- Global Archiving Directives 76
- Chapter 3 Archiving 53 77
- Used for Archiving 78
- Chapter 3 Archiving 55 79
- TABLE 3-6 79
- Chapter 3 Archiving 57 81
- Consolidation 83
- File System Directives 85
- Assigning Archive Sets 86
- Chapter 3 Archiving 63 87
- TABLE 3-9 87
- TABLE 3-10 88
- -name regex 89
- Examples 90
- 1 1s 91
- -release attribute 92
- -stage attribute 92
- file systems are archived 93
- allfiles 93
- Archive Copy Directives 94
- Setting the Archive Age 95
- file system is made after 4 96
- 1 4h 96
- Archive Set Copy Parameters 97
- -archmax target-size 98
- -bufsize=buffer-size 98
- -drivemax max-size 99
- -drivemin min-size 99
- -drives number 99
- < 20 gigabytes 1 100
- > 50 gigabytes 5 100
- Chapter 3 Archiving 77 101
- Specifying Recycling 102
- Chapter 3 Archiving 79 103
- Controlling Unarchiving 104
- Reserving Volumes: -reserve 105
- -reserve set users.1// 106
- Data.1// 106
- -reserve dir proj.1/p105/ 106
- -reserve user users.1/user5/ 107
- CODE EXAMPLE 3-29 108
- Archive Priorities 109
- -startsize 110
- VSN Association Directives 111
- Argument Meaning 112
- VSN Pools Directives 113
- # archiver -lv 114
- About Disk Archiving 115
- Configuration Guidelines 117
- Directives for Disk Archiving 117
- CODE EXAMPLE 3-35 118
- To Enable Disk Archiving 119
- Disk Archiving Examples 120
- Chapter 3 Archiving 97 121
- Example 2 122
- Planning Archiving Operations 123
- The Preview Queue 124
- Archiver Examples 125
- copy:1 arch_age:240 126
- Metadata 127
- Chapter 3 Archiving 105 129
- Various Media 130
- Chapter 3 Archiving 107 131
- Chapter 3 Archiving 109 133
- Optical Media 134
- Chapter 3 Archiving 111 135
- Chapter 3 Archiving 113 137
- Releasing 139
- Releaser Concepts 140
- Chapter 4 Releasing 117 141
- Chapter 4 Releasing 119 143
- TABLE 4-1 144
- About the releaser.cmd File 145
- Priority Directives 146
- Chapter 4 Releasing 123 147
- File Size 148
- Individual File Systems 149
- The no_release and 149
- Specifying Debugging 149
- Minimum Residence Time 150
- Chapter 4 Releasing 127 151
- Planning Releaser Operations 153
- Running the Releaser Manually 154
- Chapter 4 Releasing 131 155
- About the stager.cmd File 157
- # samd config 158
- Setting the Stage Buffer Size 159
- Specifying a Log File 160
- Chapter 5 Staging 137 161
- Example stager.cmd File 163
- Archive Set 163
- Prioritizing Preview Requests 164
- Global VSN and Age Directives 165
- Directives 166
- Chapter 5 Staging 143 167
- Priority 168
- Chapter 5 Staging 145 169
- # chmed +p lt. VSN 170
- # chmed -p lt. media-type 170
- from filling up. This might 171
- Recycling 173
- Chapter 6 Recycling 151 175
- Recycling Tape Libraries 176
- Library Directive 177
- Configuring the Recycler 178
- Creating a recycler.cmd File 179
- To create a recycler.cmd file 179
- Example recycler.cmd File 180
- The -mingain 60 Parameter 181
- The -ignore Parameter 181
- The -mail Parameter 181
- To Run the Recycler 182
- Chapter 6 Recycling 159 183
- Creating a recycler.sh File 184
- Editing the archiver.cmd File 185
- Parameters 187
- Using the Sun SAM-Remote 189
- Software 189
- Features 190
- Requirements 191
- Limitations 191
- Library Catalogs 193
- SAM-Remote Client 193
- Configuring the Software 195
- To Edit the mcf Files 197
- # samd stop 198
- Client Configuration File 200
- Argument Definition 203
- To Enable Archiving 204
- 0x00000000 No connection 207
- Recycling in a Sun SAM-Remote 209
- Environment—Method 1 209
- # ADIC Scalar 1000 210
- 1 4h 213
- To Recycle no-data VSNs 229
- CODE EXAMPLE 7-25 231
- Environment—Method 2 233
- Advanced Topics 235
- Before You Begin 236
- Chapter 8 Advanced Topics 213 237
- Configuration Instructions 238
- Environment 239
- Using Device Logging 241
- When to Use the Device Log 242
- Enabling the Device Log 243
- Using Removable Media Files 244
- Overflow File 245
- Using Segmented Files 246
- Disaster Recovery 247
- To Enable SEF Reporting 248
- To Generate SEF Report Output 248
- Chapter 8 Advanced Topics 225 249
- Managing the SEF Log File 251
- SEF sysevent Functionality 252
- Vendor-Specific Operational 253
- Procedures 253
- ADIC/Grau Automated Libraries 254
- To Export a Cartridge 255
- To Import a Cartridge 256
- Importing Cartridges 257
- Cleaning Drives 257
- Partitioning 257
- IBM 3494 Libraries 258
- Automated Libraries 259
- To Import Tapes 260
- Exporting Tapes 260
- Libraries 263
- Glossary 267
- Glossary 245 269
- Glossary 247 271
- Glossary 249 273
- Glossary 251 275
- Glossary 253 277
- Index 257 281
- Index 259 283
- Index 261 285
- Index 263 287
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