HSG80 ACS Solution Software V8.6 for Windows NT and Windows 2000 Installation and Configuration Guide
2–14 HSG80 ACS Solution Software Version 8.6 for Windows NT and Windows 2000 Installation and
Configuration Guide
Storageset Planning Considerations
This section contains the guidelines for choosing the storageset type needed for your
subsystem:
■ “Stripeset Planning Considerations,” page 2–14
■ “Mirrorset Planning Considerations,” page 2–16
■ “RAIDset Planning Considerations,” page 2–18
■ “Striped Mirrorset Planning Considerations,” page 2–20
■ “Storageset Planning Considerations,” page 2–14
■ “Partition Planning Considerations,” page 2–22
Stripeset Planning Considerations
Stripesets (RAID 0) enhance I/O performance by spreading the data across multiple disk
drives. Each I/O request is broken into small segments called “chunks.” These chunks are
then simultaneously “striped” across the disk drives in the storageset, thereby enabling
several disk drives to participate in one I/O request.
For example, in a three-member stripeset that contains disk drives Disk 10000, Disk
20000, and Disk 10100, the first chunk of an I/O request is written to Disk 10000, the
second to Disk 20000, the third to Disk 10100, the fourth to Disk 10000, and so forth until
all of the data has been written to the drives (Figure 2–10).
Figure 2–10. A 3-member RAID 0 stripeset (example 1)
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