Compaq ProLiant 6400R Compaq Parallel Database Cluster Model PDC/O1000 for Ora - Page 74

Raw Data Storage and Database Size, each RA4000/RA4100 Array

Get Compaq ProLiant 6400R PDF manuals and user guides View all Compaq ProLiant 6400R manuals
Add to My Manuals
Save this manual to your list of manuals

Page 74 highlights

Cluster Planning 4-15 Raw Data Storage and Database Size Raw data storage is the amount of storage available before any RAID levels have been configured. It is called raw data storage because RAID volumes require some overhead. The maximum size of a database stored in a RAID system will always be less than the amount of raw data storage available. To calculate the amount of raw data storage in a PDC/O1000 cluster, determine the total amount of shared storage space available to the cluster. To do this, you need to know the following: I The number of RA4000/RA4100 Arrays in the cluster I The number and storage capacities of the physical drives installed in each RA4000/RA4100 Array Add together the planned storage capacity of all RA4000/RA4100 Arrays to calculate the total amount of raw data storage in the PDC/O1000 cluster. The maximum amount of raw data storage in an RA4000/RA4100 Array depends on the type of physical drives you install in it. For example, using 1-inch high, 9-GB drives provides a maximum storage capacity of 108 GB per RA4000/RA4100 Array (twelve 9-GB drives). Using the 1.6-inch high, 18-GB drives provides a maximum storage capacity of 144 GB per RA4000/RA4100 Array (eight 18-GB drives). The amount of shared disk space required for a given database size is affected by the RAID levels you select and the overhead required for indexes, I/O buffers, and logs. Consult with your Oracle representative for further details.

  • 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
Cluster Planning
4-15
Raw Data Storage and Database Size
Raw data storage is the amount of storage available before any RAID levels
have been configured. It is called raw data storage because RAID volumes
require some overhead. The maximum size of a database stored in a RAID
system will always be less than the amount of raw data storage available.
To calculate the amount of raw data storage in a PDC/O1000 cluster,
determine the total amount of shared storage space available to the cluster. To
do this, you need to know the following:
■
The number of RA4000/RA4100 Arrays in the cluster
■
The number and storage capacities of the physical drives installed in
each RA4000/RA4100 Array
Add together the planned storage capacity of all RA4000/RA4100 Arrays to
calculate the total amount of raw data storage in the PDC/O1000 cluster. The
maximum amount of raw data storage in an RA4000/RA4100 Array depends
on the type of physical drives you install in it. For example, using 1-inch high,
9-GB drives provides a maximum storage capacity of 108 GB per
RA4000/RA4100 Array (twelve 9-GB drives). Using the 1.6-inch high, 18-GB
drives provides a maximum storage capacity of 144 GB per RA4000/RA4100
Array (eight 18-GB drives).
The amount of shared disk space required for a given database size is affected
by the RAID levels you select and the overhead required for indexes, I/O
buffers, and logs. Consult with your Oracle representative for further details.