Today I received some warnings at my new installed vSphere 5.5 hosts, the warning message:

Configuration issues. "Quick stats on hostname is not up-to-date"

Solution:

This is a known issue in vCenter Server 5.5.

To work around this issue, add these quickStats parameters to the Advanced Settings of the vCenter Server:

• vpxd.quickStats.HostStatsCheck
• vpxd.quickStats.ConfigIssues

Note: Adding these parameters to the vCenter Server will not affect future upgrades.

To add the quickStats parameters to the Advanced Settings of the vCenter Server:

1. In the vSphere Web Client, navigate to the vCenter Server instance.
2. Select the Manage tab.
3. Select Settings > Advanced Settings.
4. Click Edit.
5. In the Key field, enter this key: vpxd.quickStats.HostStatsCheck
6. In the Value field, enter: False
7. Click Add.
8. In the Key field, enter this key: vpxd.quickStats.ConfigIssues
9. In the Value field, enter: False
10. . Click Add.
11. . Click OK.
12. . Restart the vCenter Server service.

More information: VMware

sanderdaems

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.

More Posts - Website

Follow Me:

The settings that NetApp recommends (across all ESX hosts) are:

– NFS.HeartbeatFrequency(NFS.HeartbeatDelta in vSphere) = 12
– NFS.HeartbeatTimeout = 5 (default)
– NFS.HeartbeatMaxFailures = 10

When the number of NFS datastores are increased, we also recommend increasing the heap values:
– Net.TcpipHeapSize =>’30’  to Net.TcpipHeapMax  => ‘120’

To automate this configuration I’ve wrote a PowerCLI script:

#====================================================================#
#   SCRIPT:        Configure_Advanced_NFS_parameters.ps1             #
#   FUNCTION:      Configure NFS / NetApp best practice              #
#   OWNER:         Sander Daems                                      #
#   VENDOR:        NetApp / FAS2040                                  #
#   VSPHERE:       5.0 Update 1 build 623860                         #
#   CREATED:       07/01/2013                                        #
#   MODIFIED:      20/03/2013                                        #
#   VERSION:       v.1.1                                             #
#====================================================================#
#   CHANGELOG:                                                       #
#                                                                    #
#    v.1.0                                                           #
#    - Created script;                                               #
#                                                                    #
#====================================================================#
#   HOST - Specify host and connect                                  #
#====================================================================#
$ESXiHost = Read-Host "Enter ESXi Host name or IP"
Connect-VIServer $ESXiHost
#====================================================================# 
#   ADVANCED - Update TCP Settings                                   #
#====================================================================#
Set-VMHostAdvancedConfiguration -VMHost $ESXiHost -Name Net.TcpipHeapSize -Value 32
Set-VMHostAdvancedConfiguration -VMHost $ESXiHost -Name Net.TcpipHeapMax -Value 128
#====================================================================#
#   ADVANCED - Update NFS Settings                                   #
#====================================================================#
Set-VMHostAdvancedConfiguration -VMHost $ESXiHost -Name NFS.MaxVolumes -Value 256
Set-VMHostAdvancedConfiguration -VMHost $ESXiHost -Name NFS.HeartbeatMaxFailures -Value 10
Set-VMHostAdvancedConfiguration -VMHost $ESXiHost -Name NFS.HeartbeatFrequency -Value 12
Set-VMHostAdvancedConfiguration -VMHost $ESXiHost -Name NFS.HeartbeatTimeout -Value 5
#====================================================================#
#   SCRIPT FINISHED                                        #
#====================================================================#
Write-Host "Script finished..." -foregroundcolor yellow
#====================================================================#

More information / source: NetApp Whitepaper

More information / source: VMware KB , VMware KB, VMware KB

sanderdaems

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.

More Posts - Website

Follow Me: