Robert, On Fri, Jul 24, 2009 at 12:59:01AM +0100, Robert Milkowski wrote: >> To what analysis are you referring? Today the absolute fastest you can >> resilver a 1TB drive is about 4 hours. Real-world speeds might be half >> that. In 2010 we'll have 3TB drives meaning it may take a full day to >> resilver. The odds of hitting a latent bit error are already reasonably >> high especially with a large pool that's infrequently scrubbed meaning. >> What then are the odds of a second drive failing in the 24 hours it takes >> to resiler? > > I wish it was so good with raid-zN. > In real life, at least from mine experience, it can take several days to > resilver a disk for vdevs in raid-z2 made of 11x sata disk drives with real > data. > While the way zfs ynchronizes data is way faster under some circumstances > it is also much slower under other. > IIRC some builds ago there were some fixes integrated so maybe it is > different now.
Absolutely. I was talking more or less about optimal timing. I realize that due to the priorities within ZFS and real word loads that it can take far longer. Adam -- Adam Leventhal, Fishworks http://blogs.sun.com/ahl _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
