Apple Xserve RAID Driver 1.0 for Mac was available as a free download on our software library.
From the developer:
The Xserve RAID Driver Update should be installed by all Final Cut Pro users using an Xserve RAID. The update reduces I/O WRITE latency by overriding behavior to periodically force the Xserve RAID to write its buffer cache to the hard drives. Lower I/O WRITE latency improves performance during video capture and is required to avoid dropping frames regardless of the video resolution used.
You may want to check out more Mac applications, such as Xserve RAID Admin Tools or UFS Explorer RAID Recovery, which might be similar to Apple Xserve RAID Driver.
Drivers
Device Assistants