Configuration of SCSI communication

[zgz87]

Hi,

I was wondering if it is possible to modify the configuration of the SCSI communication between the ESXi and the storage. For example, I have seen that every 300 seconds, the ESXi sends a SCSI message: "Test Unit Ready LUN" to all the ports. Is it possible to modify this time and increase it or reduce it?

Thanks

[CHogan]

This is probably Disk.PathEvalTime. By default it is 300 seconds, but can be tuned through the advanced settings.

I could be wrong, but I thought this only happened when a path was down and the ESX host is checkign to see if it is back online. Are all your paths optimal?

HTH

Cormac

[zgz87]

Hi,

Thanks for your answer, it helped. I found this link about how to modify it: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=100437.... However, it only applies for ESX 3.0. Following the instructions a cannot find that value in ESXi 5.0. Do you know where can i find it?

And answering your question, it is sent always, not only when it detects a failure. It is like a keep_alive mesasge.

[CHogan]

/proc has been deprecated a while. You will have to get at it from the Advanced Options in the UI.

[zgz87]

Ok Thanks.

Can you send me a link about how to use the UI or better, with some commands to configure the Advance Configuration.

Thank you a lot