Creating pools > advanced settings
Note: Not all options
are available for all RAID levels.
Use the Advanced settings in the Configuration wizard to tune
your pool configuration for optimal performance. You can set the following
options:
- Capacity display units - pool capacity unit of measure: megabytes (MB), gigabytes (GB), or terabytes (TB).
- Second-level devices - For RAID level-x0, the number of sub-pools in the pool. This number determines
the number of physical drives you need to create the pool. For example, for a RAID-50 with three second-level devices, you need at least nine drives.
- stripe size - Determines the amount of data, in kilobytes
(KB), written to one segment of a pool
before the next segment is used for subsequent data. Depending on the controller, you can choose a stripe size from 16 KB to 1024 KB.
Notes:
- The default stripe size usually provides the best performance for typical applications.
-
To change the stripe size of an existing pool, you must expand or migrate the pool.
- Write cache - Determines how data is stored in the controller's
cache memory. You can choose from two available settings: write-through
and write-back.
- Read cache - Enables and disables read caching. When read-caching
is enabled, the controller monitors read access to the pool. If it
detects a pattern, it pre-loads the cache with the data that seems most likely
to be read next. The default is Enabled.
When you are ready to continue, click Next. The "Configuration
summary" window opens.
More information
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