VMware #vSAN 6.6 – Features and expectations based on field-experience

The release of vSAN 6.6 came with a tremendous ‘what’s new feature set’ brining VMware’s software-defined storage and hyper-converged solution to the next level. Many bloggers out there in the community did a great to job to explain the details of the following new features:

  • Removal of the Multicast requirement
  • Encryption using existing KMS solutions (KMIP 1.1 compatible)
  • Stretched Cluster enhancements (changing of witness hosts and secondary level of failure protections within a site)
  • Re-synchronization enhancements (including throttling)
  • Web Client independant vSAN monitoring User Interface
  • Performance enhancements
  • Maintenance Mode enhancements including more information and prechecks
  • New ESXCLI commands (that can be used with PowerCLI, e.g. to easily get smart data of the physical devies)
  • and many more…

Read more

vSphere: Get (hyperconverged) SMART information via #PowerCLI and #ESXCLI

Scooby Doo can doo-doo, but Jimmy Carter is SMARTer

Screen Shot 2016-06-13 at 13.55.55

Ok, that was weak… let’s still try to turn this blog post around to a good one and let me show you how you can be SMARTer by getting relevant SMART information out of your local disk devices within your ESXi host (Which can be really useful for vSAN / hyperconverged environments with local devices).

Thanks to Get-ESXCLI (v2) we are able to access easily the local ESXCLI tool via PowerCLI 6.3 R1++. Since there is a ESXCLI Namespace Method to access the SMART data of local disks we are going to use this in the following script.

# Change Parameter 
$vCenter = 'vcsa01.lenzker.local'
$ClusterName ='CL01'
$outputfile = 'c:\temp\smart.csv'
Connect-VIServer $vCenter
$resultList = @()
$Cluster = Get-Cluster -Name $ClusterName
$ESXs = $Cluster | Get-VMHost | Where {$_.ConnectionState -eq 'Connected'}
Foreach ($ESX in $ESXs){
$scsidevs = $ESX | Get-Scsilun | Where {$_.isLocal -eq $True -AND $_.canonicalName -notmatch 'mpx'}
$esxcli = $ESX | Get-ESXCLI -v2
$arguments = $esxcli.storage.core.device.smart.get.CreateArgs()
foreach ($scsidev in $scsidevs){
write-host "Gathering Smart-Data from $scsidev.canonicalName"
$arguments.devicename = $scsidev.canonicalName
$smart = $esxcli.storage.core.device.smart.get.Invoke($arguments)
$healthstatus = ($smart | Where {$_.Parameter -contains 'Health Status'}).Value
$readerror = ($smart | Where {$_.Parameter -like'Read Error Count'}).Value
$writeerror = ($smart | Where {$_.Parameter -contains 'Write Error Count'}).Value
$temperature = ($smart | Where {$_.Parameter -contains 'Drive Temperature'}).Value
$resultList += New-Object -TypeName PSCustomObject -Property @{
esx = $ESX.Name
devname = $arguments.devicename
healthstatus = $healthstatus
readerror = $readerror
writeerror = $writeerror
temperature = $temperature
} | Select esx, devname, healthstatus, readerror, writeerror, temperature
$resultfile = $resultList | export-csv -Path $outputfile -notype

et voila…it will discover all local devices and exports the relevant information into a CSV file.

get-smart output

you can find the script here.