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Boot Disk Management: A Guide for the Solaris™ Operating Environment by David Deeths, John S. Howard

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Relocating Volume Components

With versions of VxVM prior to 3.1, the VxVM hot relocation feature (vxrelocd) evacuates subdisks from components that VxVM identifies as failed or failing. The vxrelocd feature performs this subdisk evacuation without regard for the viability of the resulting configuration. Because vxrelocd is unconcerned with system availability constraints, upon a disk failure, hot relocation will evacuate VxVM objects from the failed disk to wherever there is available space. This behavior can potentially compromise the carefully planned reliability and availability aspects of the system with every disk failure.

Consider the following failure: A disk comprising a mirrored volume (RAID1+0) fails. With hot relocation active,

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