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Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide
Determining Storage Requirements
Start the planning process by determining your storage requirements. Here are a few
of the questions you should ask yourself:
■ What applications or user groups will access the subsystem? How much capacity
do they need?
■ What are the I/O requirements? If an application is data-transfer intensive, what
is the required transfer rate? If it is I/O-request intensive, what is the required
response time? What is the read/write ratio for a typical request?
■ Are most I/O requests directed to a small percentage of the disk drives? Do you
want to keep it that way or balance the I/O load?
■ Do you store mission-critical data? Is availability the highest priority or would
standard backup procedures suffice?
Use your responses to these questions along with Table 3–2 to determine the types of
storagesets you should create to satisfy your organization’s requirements.