Help me understand what this experimental analysis trying to tell me

We have several tables, some SATA and some SAS. SAS one look fine when using this tool but the SATA (above) we always say that the picture is up. This could be a problem, except that the OPS are / s reading and writing to climb several times higher than the level where it first shows 100% usage. Similarly the OPS are / s estimated max is well below the level of the IOPS / real s on many occasions.

I understand that it is generated by an algorithm to be used as a guide and so not perfect but in the case of this picture, it is not even close. It's never.

(A) I read wrong or b) some profile for the algo to sata array is not correct.

Anyone can shed some light on this?

Thank you

Delay of the acknowledgement of receipt must be disabled on the ESX servers.

The KB explains how.

KB.VMware.com/.../Search.do

Also turning off LRO can also improve performance.

In VMware, the following command queries the current value of LRO.

# esxcfg - advcfg - g/Net/TcpipDefLROEnabled

To set to zero (disabled) LRO value:

# esxcfg - advcfg - s 0/Net/TcpipDefLROEnabled

NOTE: a server restart is required.

Info on LRO change in the feedback network.

docwiki.cisco.com/.../Disable_LRO

ESXI v5.0 should also have passes the connection timeout to 60 seconds.  (default is 5).  However, it must be version 514841 or higher.

See KB 2007680 VMware kb.vmware.com/.../2007680

If you do not run MEM, which requires a business license or business +, then make sure that data warehouses are set to Round Robin and the IOs through pass 1000-3.

This thread earlier has more on these.

en.Community.Dell.com/.../20008239.aspx

Kind regards

Tags: Dell Tech

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