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May 25th, 2012 10:00
raid group size
Is it best practive to use as many disk as possible when creating a raid group and carve luns off that for best performance?
can you create a raid group from multiple buses or dae or just create the rg from one bus?
dynamox
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May 25th, 2012 10:00
this might help
White Paper: EMC CLARiiON Storage System Fundamentals for Performance and Availability — Applied Best Practices
Jingyi1
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May 27th, 2012 18:00
1. If you only look for better performance, the way is to create MetaLun spanning multiple RAID groups as the number of disks in single RAID group is limited.
2. You can create RAID group from multiple Bues. This is called Multiple DAE Provisioning or vertical provisioning. It will bring performance benefits by leveraging multiple Buses the disks reside on.
dynamox
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May 27th, 2012 22:00
vertical provisioning will benefit workload that require a lot of bandwidth, not necessarily a lot of throughput
Jingyi1
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199 Posts
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May 27th, 2012 23:00
Below are recommedations from
H4093 - EMC CLARiiON Best Practices for Fibre Channel Storage
Striped MetaVolumes are recommended for high IOPS and high bandwidth applications instead of RAID group with large spindle counts.