PowerCLI command to disover Replicated LUs using " Storage.DiscoverDevices() "

Hi,

I am creating Automation scripts for our SRA. I am trying to do with Power CLI commands, using trying to manage SRM. Installed vCenter Power CLI 11.2.

using powerCLI, i am able to connect SRM servers, create protection Groups and Recovery Plan. but discoverdevices() is failing. as per syntax arguments are not required. but the command failed expecting arguments.

below are process steps followed.

Appreciate your help to resolve

============================

PS C:\Users\Administrator> Connect-VIServer -server xxxx1202.sss.ccc.com -username Administrator@vsphere.local -password xxxxxxxx12#

Name Port User

---- ---- ----

xxxx1202.sss.ccc.com 443 VSPHERE.LOCAL\Administrator

PS C:\Users\Administrator> $srmConn=Connect-SrmServer -user Administrator@vsphere.local -password xxxxxxxx12# -RemoteUser Administrator@vsphere.local -RemotePassword xxxxxxxx12# -IgnoreCertificateErrors

PS C:\Users\Administrator> $srmapi=$srmConn.ExtensionData

PS C:\Users\Administrator> $srmapi.Storage.DiscoverDevices()

Exception calling "DiscoverDevices" with "0" argument(s): "The request refers to an unexpected or unknown type."

At line:1 char:1

+ $srmapi.Storage.DiscoverDevices()

+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException

+ FullyQualifiedErrorId : VimException

Thanks

Noorullah