HP Array Controller HSG V8.7 Software - Manual (Page 85)

Creating Storagesets 3–7
Determining Storage Requirements
Start the planning process by determining your storage requirements.
Here are a few of the questions you should ask yourself:
n What applications or user groups will access the subsystem? How
much capacity do they need?
n 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?
n 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?
n 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 Figure 3–2 to
determine the types of storagesets you should create to satisfy your
organization’s requirements.