Compaq HSZ80 manual Determining Storage Requirements

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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 3–2to determine the types of storagesets you should create to satisfy your organization’s requirements.

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide