mike wrote: > Or do smaller groupings of raidz1's (like 3 disks) so I can remove > them and put 1.5TB disks in when they come out for instance? >
I wouldn't reduce it to 3 disks (should almost mirror if you go that low.) Remember, while you can't take a drive out of a vDev, or a vDev out of a pool, you can *replace* the drives in a vDev. For example if you have 8 1TB drives in a RAIDZ (1 or 2) vDev, and buy 8 1.5TB drives, instead of adding a second vDev which is always an option, you can replace 1 drive at a time, and as soon as the last drive in the vDev is swapped, you'll see the space in the pool jump. Granted, if you need to buy drives gradually, swapping out 3 at at time (with 3 drive vDevs) is easier than 8 at a time, but you'll lose 33% of your space to parity, instead of 25% and you'll only be able to lose one disk (of each set of 3) at a time. -Kyle > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
