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Creation and Change Attributes for RAID-1 and RAID-10 Arrays
Only
You can specify the following attributes with the
ssaraid command with the
array:
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split_resolution=primary/secondary (default=primary)
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hot_spare_splits=no/yes (default=no)
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copy_rate (default=50)
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copy_verify_writes (default=no)
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fw_max_length (default=128)
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or
This attribute selects the copy of the data that is to remain available if the
primary disk drive is completely separated from the secondary disk drive.
With the attribute set to no, the RAID manager does not attempt to use hot
spare disk drives to replace missing member disk drives if a RAID-1 or
RAID-10 array is split exactly in half, or all the secondary member disk drives
are present. It is recommended that this attribute be set to no if the RAID-1 or
RAID-10 array is configured to provide protection against the loss of a physical
domain.
This attribute controls the speed of the copy operation when an I/O operation
is in progress. It can be set to any integer value 1 through 100. Higher values
increase the speed of the copy operation, but decrease the speed of the I/O
operation.
With the attribute set to yes, all data that is written to the RAID-Copy array is
verified before the write operation completes. The results of this action are:
v Unrecoverable media errors are less likely to be found when the RAID-Copy
array is uncoupled and read.
v More time is needed to perform the copy operation
This attribute sets the maximum size, in blocks, of write operations to the
cache. Write operations that are larger than the specified value write data
directly to the array, and do not use the fast-write cache.
Chapter 12. Using the SSA Command Line Interface for RAID Configurations
option when you are using the
option to create or change a RAID-1 or RAID-10
247
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