> It's worse on raidzN than on mirrors, because the > number of items which must > be read is higher in radizN, assuming you're using > larger vdev's and > therefore more items exist scattered about inside > that vdev. You therefore > have a higher number of things which must be randomly > read before you reach > completion.
In that case, isn't the answer to have a dedicated parity disk (or 2 or 3 depending on what raidz* is used), ala raid-dp. Wouldn't this effectively be the 'same' as a mirror when resilvering (the only difference being parity vs actual data), as it's doing so from a single disk. raid-dp covers the parity disk from failure so raidz1 probably wouldn't be sensible as if the parity disk fails..... -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
