The first concept version is working, here is the code, remeber, i only have 2 paths to each lun.

I am curious what you think about the script, please let me know:

#CREATED BY: Rob Mokkink Inter Access

Add-PSSnapin -Name "VMware.VimAutomation.Core"

#VARIABLES

$policy = new-object VMware.Vim.HostMultipathInfoFixedLogicalUnitPolicy

$policy.policy = "fixed"

$UNEVEN = "vmhba1"

$EVEN = "vmhba2"

$ESXHOST = read-host -prompt "Enter Host"

$USER = read-host -prompt "Enter User"

$PASSWORD_PROMPT = read-host -assecurestring -prompt "Enter password"

#CONVERT THE SECURE STRING

$CONVERT_PASSWORD = http://system.runtime.interopservices.marshal/::SecureStringToBSTR($PASSWORD_PROMPT)

$PASSWORD = http://system.runtime.interopservices.marshal/::PtrToStringAuto($CONVERT_PASSWORD)

#CONNECT TO THE SERVER

Get-esx -Server $ESXHOST -User $USER -Password $PASSWORD | fl

#GET THE STORAGE PATHS

$GET_HOST = Get-VMhost $ESXHOST

$HOST_VIEW = Get-View $GET_HOST.id

$STORAGESYSTEM = get-view $HOST_VIEW.ConfigManager.StorageSystem

#MAKE THE PATH FOR EACH LUN FIXED

write-output "SET LUN PATHS TO FIXED"

#LOOP THROUGH THE LUN'S ADD THEM TO THE ARRAY

$ARRLUN = $STORAGESYSTEM.StorageDeviceInfo.MultipathInfo.lun | where { $_.Path.length -gt 1 }

#LOOP THROUGH LUN's

foreach ($LUN in $ARRLUN)

#CHECK IF THE LUN IS EVEN OR UNEVEN AND SET THE POLICY

{ $CHECK_LUN = $LUN.id.split(':')

$CHECK_LUNID = $CHECK_LUN[2]

if($CHECK_LUNID -band 1)

{Write-Host $LUN.id = "Uneven"

#GET THE PROPER VMHBA

$GET_VMHBA = $LUN.Path | where {$_.Name -match $UNEVEN}

$policy.prefer = $GET_VMHBA.Name

#SET THE NEW PATH + POLICY

$storageSystem.SetMultipathLunPolicy($LUN.id, $policy)

}

else

{Write-Host $LUN.id = "Even"

#GET THE PROPER VMHBA

$GET_VMHBA = $LUN.Path | where {$_.Name -match $EVEN}

$policy.prefer = $GET_VMHBA.Name

#SET THE NEW PATH + POLICY

$storageSystem.SetMultipathLunPolicy($LUN.id, $policy)

}

}

Here's another version of the script.

It logs in to the VirtualCenter server, enumerates all ESX host and set the proper paths for the luns.

I also added another script which creates a password file for you. You need to pass the password file en password as arguments, like so

.\create-passfile-v2.ps1 pass.file password

Remember that the user who created the password file has rights to read it, i use psexec and a .hta to get that done (i use .hta for allmost everything)

You can then run the hba loadbalance script with 3 parameters:

1. password file

2. virtualcenter server

3. username

I have this already have the scripts above running in the lab environment at the customer site i am now. It is scheduled a couple of times a day.

I anyone has any comments etc. please inform me, so i can make the script better or add functionality.