NetWare 3.x, 4.x and 5.x. A common belief is that Novell NetWare volumes do not become fragmented and that defragmentation is not important. This is simply not true. There are many good reasons to defragment volumes. By defragmenting the volume, data is redistributed evenly across all volume segments.
System administrators can now measure the performance affects that fragmentation causes.
Novell has recognized that defragmenting the Directory Tables has an effect upon volume performance. See Novell TID 10027705. Starting with NetWare 5 SP4, Novell has improved volume mount time. Volume mount time increases. Read more here.