Been years since I first used Vinum (before the g transition?) for RAID5 and had to repair a failure where one of the 3 disks died and it swapped one or two remaining disks to different positions within that RAID5 sequence. I was able to fix it with a text editor and dd if I recall. I had ZFS on an unstable system corrupt a pool to the state that it caused a panic during scrub which would the start again on reboot. Had another pool corrupted when a system crashed due to a hard drive failure in a mirrored configuration. I remember liking the flexibility of how any storage could be combined but thought it confusing to have that and geom providers to have to choose between as they came around though the geom providers were not as complete last I compared them. Unless I'm mistaken, ZFS is only a considerable replacement for either when it is on a system with enough resources to make it viable and then you have to decide how much you want its features to use said resources. It has been a battle to use when dealing with high total storage space utilization, many nonsequential writes of single larger files, and random writes+deletes of many small files. Trying to tweak performance to minimize impact then lead me down the route of making a system that was easy to crash/freeze. It wasn't flawless when I worked with it but did its job when it was running but if alternatives with good reliability/development/maintenance/performance will exist then I can survive it disappearing but was a nice option to be able to use. Edward Sanford Sutton, III
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