On Tue, Mar 06, 2018 at 11:22:17PM +1100, Russell Coker wrote: > If you have any sort of enterprise use then you will have matched pairs.
I've been doing that at home for a long time. I resigned myself many years ago to always paying double the going price for storage because I always want RAID-1/mirrored-pairs. It means I have to put off some upgrades until I can afford, e.g. two x 4TB or two x 8TB drives instead of just one, but it is, IMO, worth it. OTOH, it does mean that when I upgrade my main machine, I have matched pairs of older drives to distribute amongst other machines. I'll probably be replacing a 4 x 1TB RAIDZ-1 pool with a pair of 8TB drives later this year. The 1TB drives are still working, so I'll split them into two pairs and add them to two other machines. > For home use it's pretty common to just use whatever you have available. If > you have a home BTRFS RAID-1 setup you can just add a new disk at any time > and after a balance operation the RAID-1 capacity will have increased by > half the size of that disk. I have a spare 4TB disk sitting around for when > I need an extra 2TB of usable space in my home server. yep, that's one of the advantages of btrfs. It's also a disadvantage because it encourages you to mix old drives, possibly failing or at least close to or maybe beyond their expected lifespan, with new ones. That's not a risk I'd take with storage devices...at least, not for any important data that I didn't have backed up. > > RE: CDDL vs GPL > > Oh well my clients will be safe, their position is that they trust Canonical > and will keep using it until/unless advised otherwise. Your clients aren't at any risk - they haven't distributed CDDL+GPL binaries. GPL & CDDL only restrict distribution, not use. At most, they might have to compile their own spl and zfs modules (apt-get install spl-dkms zfs-dkms should be all that's needed). Or get you to do it. craig -- craig sanders <c...@taz.net.au> _______________________________________________ luv-main mailing list firstname.lastname@example.org https://lists.luv.asn.au/cgi-bin/mailman/listinfo/luv-main