HP AE326A HP StorageWorks 1500 Modular Smart Array Installation Guide (355901- - Page 30
Plan your storage configuration, System and performance expectations
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Installation Procedures - All Deployments Plan your storage configuration Proper planning of the system storage and its subsequent performance is critical to a successful deployment of your MSA. Improper planning or implementation can result in wasted storage space, degraded performance, or inability to expand the system to meet growing storage needs. Considerations include: ■ System and performance expectations ■ Striping methods ■ RAID levels ■ Hard drive sizes and types ■ Spare drives ■ Array sizing (capacity) System and performance expectations To help you determine the best way to configure your storage, you must first rank the following three storage characteristics in order of importance: ■ Fault tolerance (high availability) ■ I/O performance ■ Storage efficiency With your priorities established, you can determine which striping method and RAID level to use. As highlighted in the following sections on Striping methods and RAID levels, some configuration methods offer greater fault tolerance, while other configuration methods offer better I/O performance or storage efficiency. 30 HP StorageWorks 1500 Modular Smart Array Installation Guide