RAID Product Options

The following sections briefly discuss several ways to implement RAID.

Host Volume Managers

Host volume management software typically has several RAID variations and, in some cases, offers many sophisticated configuration options. Running RAID in a volume manager opens the potential for integrating file system and volume management products for management and performance-tuning purposes. Another advantage of using host volume management is the ability to use less expensive just a bunch of disks (JBOD) disk subsystems, as opposed to expensive disk subsystems.

The performance impact of RAID on the host CPU is often overestimated, because the address space translation process for striping data is a relatively low overhead process. ...

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