Home > Storage > PowerScale (Isilon) > Industry Solutions and Verticals > Media and Entertainment > PowerScale OneFS: macOS Client Performance and User Experience Optimization > On the PowerScale OneFS Cluster
It is counterintuitive, but the current state of Apple extensions causes large directory listings and opening of complex projects to be slow. Disabling Apple extensions in OneFS on the PowerScale cluster disables them for all clients, avoiding the individual operating system behavior.
The default SMB credit value in OneFS is 1024. Increasing this value to 8192 greatly improves macOS write performance.
This change assumes that the PowerScale cluster is on a private, secure network. This change is unnecessary for macOS 11+. However, when using the internal 10GBASE-T network interface on Apple hardware, failure to change this value can cause difficult to diagnose performance issues on older versions of macOS.