Dell PowerVault TL4000 Dell Model TL2000/TL4000 Tape Library- User's Guide - Page 115

Stopping Sequential Mode

Get Dell PowerVault TL4000 PDF manuals and user guides View all Dell PowerVault TL4000 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 115 highlights

- Random: In random mode, the library allows the server's (host's) application software to select any data cartridge in any order. - Sequential: In sequential mode, the library's firmware predefines the selection of the cartridges. After initialization, the firmware causes the library to select the first available cartridge found (counting from the I/O Station through slot 23) for loading into the drive. Important: If a Logical Library in Sequential Mode contains more than one drive, only the first drive in the Logical Library will be utilized. - Autoload: Sequential mode with autoload mode ON loads the first available cartridge (slot with the lowest numerical value that contains a cartridge) automatically if the library powers ON with an empty drive. - Loop: Sequential mode with loop mode ON loads the cartridge in the lowest numerical slot after the cartridge in the highest numerical slot has been filled and sent back to its home slot. This allows endless backup operations without user interaction. - Starting Sequential Mode v Autoload Option: - If the Autoload option is set to ON (Configure → Library Settings → Autoload), the accessor will load the first cartridge (cartridge located in the slot with the lowest numeric value) found in the storage inventory area into the drive upon power ON of the library. If the library powers on with a cartridge already in the drive, sequential mode will start with that cartridge unless the host issues a rewind and unload command to the drive. In that case, the next cartridge in sequence will be loaded into the drive. - If the Autoload Option if OFF, sequential mode must be started by selecting the Move Cartridges option (Control → Move Cartridges) to load the first cartridge (or any cartridge) into the drive. Whatever cartridge is loaded into the drive, that is where the sequence starts from. For example, if a cartridge from the fifth lowest numeric storage slot containing a cartridge is loaded using the Move Cartridges option, after the host issues a rewind/unload command, the next cartridge loaded will be the cartridge from the next higher numeric slot. Cartridges need not be in contiguous slots. v Loop Option: If the Loop option is set to ON (Configure → Library Settings → → Loop), when the last cartridge (cartridge in the highest numeric slot) is unloaded and placed back into storage, the accessor will immediately start over again loading the first cartridge into the drive. - Stopping Sequential Mode: To stop sequential mode, use the Move Cartridges option from the Control menu (Control → Move Cartridges) to unload the drive. the next sequential cartridge will NOT be loaded. To restart sequential mode, use the same Control menu command to load a cartridge. The loading sequence will resume from that numeric slot in the cartridge inventory. v Active Slots - the number of active slots in each logical library. Note: Slots can be reserved so that they are invisible to the host. It may be necessary to set the number of Active Slots to match the number of slots that are available to the ISV software. Reserved slots are created by reducing the number of active slots. Chapter 5. Operations 5-21

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
  • 226
  • 227
  • 228
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 240
  • 241
  • 242
  • 243
  • 244
  • 245
  • 246
  • 247
  • 248
  • 249
  • 250
  • 251
  • 252
  • 253
  • 254
  • 255
  • 256
  • 257
  • 258
  • 259
  • 260
  • 261
  • 262
  • 263
  • 264
  • 265
  • 266
  • 267
  • 268
  • 269
  • 270
  • 271
  • 272
  • 273
  • 274
  • 275
  • 276
  • 277
  • 278
  • 279
  • 280
  • 281
  • 282
  • 283
–
Random
: In random mode, the library allows the server's (host's) application
software to select any data cartridge in any order.
–
Sequential
: In sequential mode, the library's firmware predefines the selection
of the cartridges. After initialization, the firmware causes the library to select
the first available cartridge found (counting from the I/O Station through slot
23) for loading into the drive.
Important:
If a Logical Library in Sequential Mode contains more than one
drive, only the first drive in the Logical Library will be utilized.
-
Autoload
: Sequential mode with autoload mode ON loads the first
available cartridge (slot with the lowest numerical value that contains a
cartridge) automatically if the library powers ON with an empty drive.
-
Loop
: Sequential mode with loop mode ON loads the cartridge in the
lowest numerical slot after the cartridge in the highest numerical slot has
been filled and sent back to its home slot. This allows endless backup
operations without user interaction.
-
Starting Sequential Mode
v
Autoload Option:
–
If the Autoload option is set to
ON
(
Configure
→
Library Settings
→
Autoload
), the accessor will load the first cartridge (cartridge located
in the slot with the lowest numeric value) found in the storage
inventory area into the drive upon power ON of the library. If the
library powers on with a cartridge already in the drive, sequential
mode will start with that cartridge unless the host issues a rewind and
unload command to the drive. In that case, the next cartridge in
sequence will be loaded into the drive.
–
If the Autoload Option if
OFF
, sequential mode must be started by
selecting the Move Cartridges option (
Control
→
Move Cartridges
) to
load the first cartridge (or any cartridge) into the drive. Whatever
cartridge is loaded into the drive, that is where the sequence starts
from. For example, if a cartridge from the fifth lowest numeric storage
slot containing a cartridge is loaded using the Move Cartridges
option, after the host issues a rewind/unload command, the next
cartridge loaded will be the cartridge from the next higher numeric
slot. Cartridges need not be in contiguous slots.
v
Loop Option:
If the Loop option is set to
ON
(
Configure
→
Library Settings
→→
Loop
),
when the last cartridge (cartridge in the highest numeric slot) is
unloaded and placed back into storage, the accessor will immediately
start over again loading the first cartridge into the drive.
-
Stopping Sequential Mode
: To stop sequential mode, use the Move
Cartridges option from the Control menu (
Control
→
Move Cartridges
) to
unload the drive. the next sequential cartridge will NOT be loaded. To
restart sequential mode, use the same Control menu command to load a
cartridge. The loading sequence will resume from that numeric slot in the
cartridge inventory.
v
Active Slots
- the number of active slots in each logical library.
Note:
Slots can be reserved so that they are invisible to the host. It may be
necessary to set the number of
Active Slots
to match the number of slots
that are available to the ISV software. Reserved slots are created by
reducing the number of active slots.
Chapter 5. Operations
5-21