RaufDBA
Contributor
Contributor

What is the max value for Device Queue Depth?

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Hi. I am actually a DBA and recently I started learning vmware architecture due to the fact that we are running our database on vmware. My question is related to the esxi queues. I found these two images in the web: 

Fig-1.png

Screenshot 2021-02-27 141317.jpg

However, I can't find the Default and Max values for Device (LUN) queue depth which is pointed on the above image.

For more details, I also found this image:

Screenshot 2021-02-27 143439.jpg

Which shows that in this scenario Device Max Queue Depth is 1024.

 

Some questions come into my mind regarding Device Queue Depth which I can't find in the web, so I thought I can get help here. 

 

What are the default and max values for Device Queue Depth?

Does it depend on HBA Queue Depth?

Where do I suppose to get this number?

Does it depend on the vendor's characteristics?

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harry89
Enthusiast
Enthusiast

https://blogs.vmware.com/vsphere/2012/07/troubleshooting-storage-performance-in-vsphere-part-5-stora...

This should answer you queries

 

Harry
VCIX-DCV6.5 ,VCIX-NV6 , VCAP-CMA7
Mark answer as correct/helpful if it solves your query

View solution in original post

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harry89
Enthusiast
Enthusiast

https://blogs.vmware.com/vsphere/2012/07/troubleshooting-storage-performance-in-vsphere-part-5-stora...

This should answer you queries

 

Harry
VCIX-DCV6.5 ,VCIX-NV6 , VCAP-CMA7
Mark answer as correct/helpful if it solves your query

View solution in original post

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