Stripe-unit size and stripe in ServeRAID technology explained.
With RAID technology, data is striped across an array of physical drives. This data distribution scheme complements the way the operating system requests data. The stripe-units-size is a global setting on the controller and can be configured to 8k (default), 16k, 32k and 64k.
The granularity at which data is stored on one drive of the array before subsequent data is stored on the next drive of the array is called the stripe-unit size. You can set the stripe-unit size to 8 KB, 16 KB, 32 KB, or 64 KB. You can maximize the performance of your ServeRAID controller by setting the stripe-unit size to a value that is close to the size of the system I/O requests. For example, performance in transaction-based environments, which typically involve large blocks of data, might be optimal when the stripe-unit size is set to 32KB or 64KB. However, performance in file and print environments, which typically involve multiple small blocks of data, might be optimal when the stripe-unit size is set to 8KB or 16KB.
The collection of stripe units, from the first drive of the array to the last drive of the array, is called a stripe.
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