Oracle RAC on RedHat Linux Best Practice guide and ... - OpenMPE
Oracle RAC on RedHat Linux Best Practice guide and ... - OpenMPE
Oracle RAC on RedHat Linux Best Practice guide and ... - OpenMPE
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ASM – disk groups <strong>and</strong> failure<br />
groups<br />
• A disk group can include any number of disk devices<br />
• Each disk device can be :<br />
− an individual physical disk,<br />
− a multiple disk device such as a RAID storage array or logical<br />
volume<br />
− a partiti<strong>on</strong> <strong>on</strong> a physical disk.<br />
• However, in most cases, disk groups c<strong>on</strong>sist of <strong>on</strong>e or<br />
more individual physical disks.<br />
• To enable ASM to balance I/O <strong>and</strong> storage appropriately<br />
within the disk group, all devices in the disk group should<br />
have similar, storage capacity <strong>and</strong> performance.<br />
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