HSG80 ACS Solution Software V8.6 for Windows NT and Windows 2000 Installation and Configuration Guide

2–20 HSG80 ACS Solution Software Version 8.6 for Windows NT and Windows 2000 Installation and
Configuration Guide
Striped Mirrorset Planning Considerations
Striped mirrorsets (RAID 0+1) are a configuration of stripesets whose members are also
mirrorsets (Figure 2–15). Consequently, this kind of storageset combines the performance
of striping with the reliability of mirroring. The result is a storageset with very high I/O
performance and high data availability. Figure 2–16 shows a second example of a striped
mirrorset using six members.
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Figure 2–15. Striped mirrorset (example 1)
The failure of a single disk drive has no effect on the ability of the storageset to deliver
data to the host. Under normal circumstances, a single disk drive failure has very little
effect on performance. Because striped mirrorsets do not require any more disk drives than
mirrorsets, this storageset is an excellent choice for data that warrants mirroring.
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