December 2005
Intermediate to advanced
284 pages
7h 14m
English
book
Configuration and Tuning GPFS for Digital Media Environments
by Octavian Lascu, Andreas Lüngen, Dag Wieers, Dino Quintero
Content preview from Configuration and Tuning GPFS for Digital Media Environments
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176 Configuration and Tuning GPFS for Digital Media Environments
For high availability, the disks of a particular LUN should be distributed over as
many disk enclosures as possible. Ideally, every enclosure should contain only
one (1) disk of each RAID array. For example, for 4+P arrays you should use at
least five expansion units and configure the array by using one drive in each
expansion unit.
This will protect from outages in case a complete expansion unit fails. In addition,
the expansion units are cabled in such a way that two independent loops will
have access to the same drives (see Figure 3-5 on page 91 for 4+P array
configuration and ...
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