Complex sentence: NetApp was able to provide a work around and Tucows was able to begin restoring service until the load increased and began thrashing the NetApp causing Tucows to take the system partially down to allow it to catch up under a lighter load.
Split into simpler sentences: NetApp was able to provide a work around and Tucows was able to begin restoring service. That is until the load increased and began thrashing the NetApp causing Tucows to take things partially down to allow the system to catch up under a lighter load.