Missing /storage/vsphere-client folder on the Linux vCenter Appliance

Our plugin needs to persist some data (configuration options) on the vSphere web client server. The globalservice sample code mentions that the /storage/vsphere-client folder should be used to persist data. However, we are observing that the /storage/vsphere-client folder does not exist on some of the appliances. Has any one observed this issue? When does this folder get created? Is this folder created in response to some event or change on the vCenter server? If the folder is not guaranteed to exist, what is the suggested work around (i.e. should the /storage folder be used to persist data)?


Regards,


Ashutosh