HP StoreOnce D2D4324 HP D2D25xx, 41xx and 43xx Backup System user guide (EH985 - Page 167

Glossary

Get HP StoreOnce D2D4324 PDF manuals and user guides View all HP StoreOnce D2D4324 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 167 highlights

Glossary A Autoloaders B Backup devices and slots C CIFS D Deduplication An autoloader is a Virtual Tape Device that has a single tape drive and multiple storage slots. (A library has multiple tape drives.) Each storage slot contains a cartridge that can be allocated to a specific backup task; for example, one cartridge can hold Monday's data, another can hold Tuesday's data, and so on. In this way, backup applications are able to implement tape rotation strategies that accommodate differing backup requirements for daily, weekly, monthly, yearly backups. See Virtual Tape Devices. Common Internet File System (CIFS) is a protocol for interfacing to hosts on a Windows network. The HP StoreOnce Backup System supports this interface for connecting to NAS targets from a Windows network. Data deduplication compares blocks of data being written to the backup device with data blocks previously stored on the device. If duplicate data is found, a pointer is established to the original data, rather than storing the duplicate data sets. This removes, or "deduplicates," the redundant blocks. See also the HP StoreOnce Backup System Concepts Guide. The main benefit of deduplication is that it is possible to store more data and retain data for longer on each device. The host using the device has access to a greater depth of historical data that would otherwise have been archived offline. Figure 55 Data stored after deduplication E Emulation types HP StoreOnce products emulate a range of physical Tape Autoloaders or Tape Libraries. Supported emulation types are listed below: • HP 1x8 G2 Autoloader (HP D2D2500) • HP MSL2024 Library • HP MSL4048 Library • HP D2DBS Library 167

  • 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
Glossary
A
Autoloaders
An autoloader is a Virtual Tape Device that has a single tape drive and multiple storage slots.
(A library has multiple tape drives.) Each storage slot contains a cartridge that can be allocated
to a specific backup task; for example, one cartridge can hold Monday's data, another can hold
Tuesday's data, and so on. In this way, backup applications are able to implement tape rotation
strategies that accommodate differing backup requirements for daily, weekly, monthly, yearly
backups.
B
Backup devices
and slots
See
Virtual Tape Devices
.
C
CIFS
Common Internet File System (CIFS) is a protocol for interfacing to hosts on a Windows network.
The HP StoreOnce Backup System supports this interface for connecting to NAS targets from a
Windows network.
D
Deduplication
Data deduplication compares blocks of data being written to the backup device with data blocks
previously stored on the device. If duplicate data is found, a pointer is established to the original
data, rather than storing the duplicate data sets. This removes, or “deduplicates,” the redundant
blocks. See also the
HP StoreOnce Backup System Concepts Guide
.
The main benefit of deduplication is that it is possible to store more data and retain data for
longer on each device. The host using the device has access to a greater depth of historical data
that would otherwise have been archived offline.
Figure 55 Data stored after deduplication
E
Emulation types
HP StoreOnce products emulate a range of physical Tape Autoloaders or Tape Libraries. Supported
emulation types are listed below:
•
HP 1x8 G2 Autoloader (HP D2D2500)
•
HP MSL2024 Library
•
HP MSL4048 Library
•
HP D2DBS Library
167