Table 5-4 shows the permitted striping attribute values and allocation unit size chunks. These values correspond to the STRIPE
column of V$ASM_TEMPLATE
.
Table 5-4 Permitted values for Oracle ASM template striping attribute
Striping Attribute Value | Description |
---|---|
|
Striping in 128 KB chunks. |
|
Striping in 1 MB chunks. |
Table 5-5 shows the permitted redundancy values for Oracle ASM templates. These values correspond to the REDUND
column of V$ASM_TEMPLATE
.
Table 5-5 Permitted values for Oracle ASM template redundancy attribute
Redundancy Attribute Value | Resulting Mirroring in Normal Redundancy Disk Group | Resulting Mirroring in High Redundancy Disk Group | Resulting Mirroring in External Redundancy Disk Group |
---|---|---|---|
|
Two-way mirroring |
Three-way mirroring |
(Not allowed) |
|
Three-way mirroring |
Three-way mirroring |
(Not allowed) |
|
No mirroring |
(Not allowed) |
No mirroring |
Table 5-6 shows the initial attribute settings for some default templates. The type of mirroring associated with the Mirroring column for normal, high, and external redundancy disk groups is specified in Table 5-5. For example, the Mirror column for high redundancy disk groups displays MIRROR
in Table 5-6. In Table 5-5, the MIRROR
value for high redundancy disk groups corresponds to Three-way
mirroring
.
For an example of the output of the V$ASM_TEMPLATE
view, refer to Example 6-10.
Table 5-6 Oracle ASM system default templates attribute settings
Template Name | File Striping | Mirroring, Normal Redundancy Disk Group | Mirroring, High Redundancy Disk Group | Mirroring, External Redundancy Disk Group | Primary Region | Mirror Region |
---|---|---|---|---|---|---|
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Table 5-7 shows the permitted primary and mirror region values for Oracle ASM templates. These values correspond to the PRIMARY_REGION
and MIRROR_REGION
columns of V$ASM_TEMPLATE
. For more information about disk regions, see "Intelligent Data Placement".
Table 5-7 Permitted values for Oracle ASM template primary and mirror region attribute
Primary and Mirror Region Attribute Value | Description |
---|---|
|
Use the inner most tracks (closest to spindle) on the disk drive. |
|
Use the outermost tracks which have greater speed and higher bandwidth. |