Is there any advantage to having the disposable disks in a floating environment that rebuilds after every user logs off? Simply having the floating disks adds significant overhead to my storage needs.
Hopefully someone else will chime in as well but I don't necessary see a need for disposable disk if you are going to use the refresh on logoff setting. The only caveat to that is that disposable disk can only be set at pool creation so if your not 100% sure about using refresh on logoff you may want to go ahead and enable the disposable disk option.
The advantage of a disposable disk is to save storage space on linked clones. When the VDI is powered off the disposable disk is removed. Like the previous post said if you are refreshing the pool after each logoff then you can do without a disposable disk.
Any idea how this would affect VSA? The disposable disk holds the paging file and since it (the disk) isn't seen by VSA, would this keep the "churn" of VSA memory down and allow it to more effectively handle caching, i.e. not invalidate the cache as quickly?