Storage Capacity for X3-2 and X4-2 Exadata Storage Servers

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Every Exadata Storage Server contains 12 drives. The capacity of those drives varies, depending on the type of drives that are installed:

First Exadata Storage Server type (X3-2):
- 600 GB High Performance SAS disk
- 3 TB High Capacity SAS disk
Second Exadata Storage Server type (X4-2):
- 1.2 TB High Performance SAS disk
- 4 TB High Capacity SAS disk

In addition, the total number of Exadata Storage Servers varies, depending on the type of Oracle SuperCluster T5-8 and Exadata Storage Expansion Rack that you have:

Rack Type	Quarter Rack	Half Rack	Full Rack
Oracle SuperCluster T5-8	N/A	4	8
Oracle Exadata Storage Expansion Rack	4	9	18

Finally, the total capacity that you have available depends on the level of redundancy that you want to set for the ASM disk groups (normal redundancy or high redundancy).

The following tables provide capacity information for the Oracle SuperCluster T5-8 and the Oracle Exadata Storage Expansion Rack.

Table 2 Exadata Storage Server Storage Capacity in the Oracle SuperCluster T5-8, High-Capacity Version

Capacity Type	3 TB Disks (X3-2)	4 TB Disks (X4-2)
Raw disk capacity	Half Rack: 144 TB Full Rack: 288 TB	Half Rack: 192 TB Full Rack: 384 TB
Usable mirrored capacity (ASM normal redundancy)	Half Rack: 64 TB Full Rack: 128 TB	Half Rack: 85.3 TB Full Rack: 170.6 TB
Usable triple mirrored capacity (ASM high redundancy)	Half Rack: 43 TB Full Rack: 86 TB	Half Rack: 57.3 TB Full Rack: 114.6 TB
Raw flash capacity	Half Rack: 6.4 TB Full Rack: 12.8 TB	Half Rack: 12.8 TB Full Rack: 25.6 TB

Table 3 Exadata Storage Server Storage Capacity in the Oracle SuperCluster T5-8, High-Performance Version

Capacity Type	600 GB Disks (X3-2)	1.2 TB Disks (X4-2)
Raw disk capacity	Half Rack: 28 TB Full Rack: 56 TB	Half Rack: 57 TB Full Rack: 114 TB
Usable mirrored capacity (ASM normal redundancy)	Half Rack: 13 TB Full Rack: 26 TB	Half Rack: 26 TB Full Rack: 52 TB
Usable triple mirrored capacity (ASM high redundancy)	Half Rack: 8 TB Full Rack: 16 TB	Half Rack: 16 TB Full Rack: 32 TB
Raw flash capacity	Half Rack: 6.4 TB Full Rack: 12.8 TB	Half Rack: 12.8 TB Full Rack: 25.6 TB

Table 4 Exadata Storage Server Storage Capacity in the Oracle Exadata Storage Expansion Rack, High-Capacity Version

Capacity Type	3 TB Disks (X3-2)	4 TB Disks (X4-2)
Raw disk capacity	Quarter Rack: 144 TB Half Rack: 324 TB Full Rack: 648 TB	Quarter Rack: 192 TB Half Rack: 432 TB Full Rack: 864 TB
Usable mirrored capacity (ASM normal redundancy)	Quarter Rack: 64 TB Half Rack: 144 TB Full Rack: 288 TB	Quarter Rack: 85.3 TB Half Rack: 192 TB Full Rack: 384 TB
Usable triple mirrored capacity (ASM high redundancy)	Quarter Rack: 43 TB Half Rack: 97 TB Full Rack: 193.5 TB	Quarter Rack: 57.3 TB Half Rack: 129 TB Full Rack: 384 TB
Raw flash capacity	Quarter Rack: 6.4 TB Half Rack: 14.4 TB Full Rack: 28.8 TB	Quarter Rack: 12.8 TB Half Rack: 28.8 TB Full Rack: 57.6 TB

Table 5 Exadata Storage Server Storage Capacity in the Oracle Exadata Storage Expansion Rack, High-Performance Version

Capacity Type	600 GB Disks (X3-2)	1.2 TB Disks (X4-2)
Raw disk capacity	Quarter Rack: 28 TB Half Rack: 64 TB Full Rack: 128 TB	Quarter Rack: 57 TB Half Rack: 129 TB Full Rack: 258 TB
Usable mirrored capacity (ASM normal redundancy)	Quarter Rack: 13 TB Half Rack: 29 TB Full Rack: 58 TB	Quarter Rack: 26 TB Half Rack: 58 TB Full Rack: 116 TB
Usable triple mirrored capacity (ASM high redundancy)	Quarter Rack: 8 TB Half Rack: 19 TB Full Rack: 39 TB	Quarter Rack: 16 TB Half Rack: 39 TB Full Rack: 78 TB
Raw flash capacity	Quarter Rack: 6.4 TB Half Rack: 14.4 TB Full Rack: 28.8 TB	Quarter Rack: 12.8 TB Half Rack: 28.8 TB Full Rack: 57.6 TB