In vSAN all-flash, can I stripe two PCIe caching devices together?

frogtech

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Jan 4, 2016
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I have a very specific hardware setup that won't be changing and for the caching devices I want them to be write intensive. Due to budget constraints I'm limited to some smaller devices but want to know is it possible within the vSAN/vSphere interface to stripe those two caching devices together as one effectively larger cache device?

They're 2.5" PCIe SSDs, I can't RAID 0 them outside of the hypervisor.

Thanks.
 

Rand__

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Mar 6, 2014
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No.
If you present them as single drives then you can only use them as single drives. You could use two diskgroups though with one drive each if that helps
 

frogtech

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Would performance suffer or actually improve and would it provide any increased resilience against disk failures?
 

Rand__

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Mar 6, 2014
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if you run 2 diskgroups (per server) you can distribute slices to more than one dg per box , so depending on vsan policies more resilience or more performance.