I'm attempting to write a script for a customer to create an overview of snapshots older than x days. My starting point would be to get a list of all volumes and query those volumes for snapshots.
I see in the documentation that the Get-NaVol cmdlet uses the volume-list-info API. However, this API is known to cause problems on busy filers with many LUNs. (See BURTs 645937 and 531053). SDW6.4.1 contains a fix that uses the volume-list-info-iter-* API instead.
Is there an alternative cmdlet available that uses the volume-list-info-iter-* API?
There is not a separate cmdlet that uses the volume-list-iter-* API. As Clinton suggested, the -Terse option significantly reduces the amount of data returned, which helps on heavily-loaded systems. However, as you point out, this does still use volume-list-info. I will log moving to the iterator form for consideration in a future release.