Specifications

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Compaq HSG80 Array Controller ACS Version 8.4 Configuration and CLI Reference Guide
Increasing the Data Transfer Rate
A small chunk size relative to the average request size increases the data transfer rate
by allowing multiple disk drives to participate in one I/O request. This concept is
shown in Figure 4–14.
Figure 4–14. Chunk Size Smaller than the Request Size
Applications such as CAD, image processing, data collection and reduction, and
sequential file processing tend to require high data-transfer rates.
Increasing Sequential Write Performance
For stripesets (or striped mirrorsets), use a large chunk size relative to the I/O size to
increase the sequential write performance. A chunk size of 256 generally works well.
Chunk size does not significantly affect sequential read performance.
CXO-5172A-MC
Chunk size = 128k (256 blocks)
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Request A