Tip of the Day: Optimizing Storage Configuration for Better Performace

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  • Updated 4 years ago
  • Initial storage equal to the size of the physical source databases. For high redo rates and/or high DB change rates, allocate an additional 10-20% storage.
  • Add storage when storage capacity approaches 30% free
  • Use physical LUNS allocated from storage pools or RAID groups that are configured for availability
  • Never share physical LUNs between the Delphix Engine and other storage clients.
  • Keep all physical LUNs the same size. Add new storage by provisioning new LUNs of the same size.
  • Provision storage using VMDKs or RDMs operating in virtual compatibility mode.
  • VMDKs should be Thick Provisioned, Eager Zeroed. The underlying physical LUNs can be thin provisioned.
  • Physical LUNs used for RDMs should be thick provisioned. 
  • Measure or estimate the required IOPS and manage the storage disks to provide this capacity. It is common to use larger numbers of spindles to provide the IOPS required. 
  • Physical LUNs carved from RAID 1+0 groups or pools with dedicated spindles provide higher IOPS performance than other configurations
  • Maximize Delphix Engine vRAM for a larger system cache to service reads
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Posted 4 years ago

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