ZFS, happily, doesn't need or want to preallocate metadata blocks—it creates them ... rather than the number of vdevs in a pool. The very mistaken idea—which seems reasonable on the surface ...

There are lots of options for running ZFS, and very little of this ... Remember, all data, including filesystem metadata, is striped across all top-level vdevs with each new write.

Among the more popular filesystems are Ext4, Btrfs, XFS and ZFS. Each is widely used and offers some unique features and benefits. Metadata handling, journaling, and data integrity mechanisms are ...