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Unity Flash drive performance
Hello,
I used to reference the VNX Best practices guide for estimates on IOPs and Bandwidth, but I can't find equal documentation for Unity.
The most I can find is a table in the Unity best practices guide showing the maximum recommended IOPs for a flash drive being 20,000.This seems very high, I wonder what IO was being sent to the drive to get that. What about bandwidth figures? We use this to help estimate pool sizes and requirements for our applications.
DELL_ChrisHolloway
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April 10th, 2017 07:00
Hi
If you look in the BP guide on page 8, it gives guidance on how the numbers where tested:
For some of the following hardware sections, both IOPS and bandwidth (MB/s) capabilities are shown. A different type of workload is assumed when determining IOPS capabilities versus when determining bandwidth capabilities:
• IOPS workloads assume random small-block access. The following numbers are specifically modeled on a workload with a mix of I/O sizes less than 64KB, containing both read and write operations, and accessing randomly selected blocks within the datasets.
• Bandwidth workloads assume sequential large-block access. The following numbers are specifically modeled on a workload with a mix of I/O sizes greater than 64KB, containing both read and write operations, and accessing contiguous blocks of data with minimal seek.
Rainer_EMC
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April 10th, 2017 09:00
For sizing though I would suggest to use the Unity sizer tool rather than "back of the envelope" sizing.
since you seem to be a partner - more information is available as part of the partner Speed program