Average throughput increased by factor of 20 or more. Burstiness increased significantly. Most short-lived files are short. This has a major impact. The average per-byte lifetime has increased due to larger files.
Larger caches become more important.
Sprite provides guaranteed file consistency to support concurrent write sharing. Their cluster had 36 clients and 4 servers on an Ethernet. Large file caches are important, because file sizes have increased. Still, most dirty bytes leave the cache for data integrity reasons, not to make room in the cache for other blocks. Paging traffic and file traffic account for roughly comparable amounts of traffic, and this balance is not likely to change in the near future.