> zpool create testpool disk1 disk2 disk3 In the traditional sense of RAID, this would create a concatenated data set. The size of the data set is the size of disk1 + disk2 + disk3. However, since this is ZFS, it's not constrained to linearly assigning virtual disk blocks to physical disk blocks ... ZFS will happily write a single large file to all 3 disks simultaneously and just keep track of where all the blocks landed.
As a result, you get performance which is 3x a single disk for large files (like striping) but the performance for small files has not been harmed (as it is in striping)... As an added bonus, unlike striping, you can still just add more disks to your zpool, and expand your volume on the fly. The filesystem will dynamically adjust to accommodate more space and more devices, and will intelligently optimize for performance. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
