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Optimal stripe size for RAID 10

New Member

Is there a recommended stripe size for RAID 10 storage?

Thanks,
Carthic

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Splunk Employee
Splunk Employee

Usually the controller's default value is best unless you are experiencing performance problems.

64k is the most common setting I have seen for the chunk size. It seems to work well for most workloads since often both indexing and search will have plenty of data to write/read from disk with each I/O. The smaller you make the chunk size, the more seeks your array will have to do.

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Path Finder

Hi Carthic,

you can take a look here, in the "disk subsystem" section:

http://docs.splunk.com/Documentation/Splunk/5.0.3/Installation/Referencehardware

It really depends on your indexing volume / day and if you're clustering or not.
In their example with 8 drives, you could handle 800 IOPS peaks.

And if hard drives don't bring enough IOPS, you always could consider SSDs instead of hard drives.

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New Member

Thanks for the pointer. The manual does not provide details on fine tuning RAID (stripe/chunk size) to match the read/write characteristics of Splunk. System is targeted for an indexing volume of 100 GB/day. I am thinking of using the default value of the RAID controller.

Regards
Carthic

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