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RAID level migration
About RAID level migration
RAID level migration is to change the level of a RAID array to reconfigure RAID without
compromising data integrity.
Applicable scenarios
You can perform RAID level migration when the current RAID level cannot meet service
requirements.
RAID capacity expansion
About RAID capacity expansion
The storage controller supports the following methods to expand the capacity of a RAID array:
Adding available capacity—If the total capacity of all drives in a RAID array is not fully
configured in RAID, the unconfigured capacity can be added to the RAID array to expand the
RAID capacity.
Adding drives—New drives can be added to a RAID array to expand the RAID capacity. If
needed, the level of the RAID array can be migrated to accommodate the newly added drives.
Applicable scenarios
You can perform RAID capacity expansion when the current RAID capacity cannot meet service
requirements.
RAID location migration
About RAID location migration
This feature allows you to migrate logical drives in a RAID array or a whole RAID array to other
physical drives with a sufficient capacity. The target physical drives can be of different types from
the initial physical drives. For example, you can migrate logical drives on SATA HDDs to SAS SSDs.
Applicable scenarios
You can perform RAID location migration when bulk drive replacement, bulk data recovery, and host
replacement occurs.
High speed read/write cache
About high speed read/write cache
The storage controller supports the cache feature. The cache provides a much faster read/write
speed than drives.
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