On 4/2/2010 8:08 AM, Edward Ned Harvey wrote: >> I know it is way after the fact, but I find it best to coerce each >> drive down to the whole GB boundary using format (create Solaris >> partition just up to the boundary). Then if you ever get a drive a >> little smaller it still should fit. >> > It seems like it should be unnecessary. It seems like extra work. But > based on my present experience, I reached the same conclusion. > > If my new replacement SSD with identical part number and firmware is 0.001 > Gb smaller than the original and hence unable to mirror, what's to prevent > the same thing from happening to one of my 1TB spindle disk mirrors? > Nothing. That's what. > > Actually, It's my experience that Sun (and other vendors) do exactly that for you when you buy their parts - at least for rotating drives, I have no experience with SSD's.
The Sun disk label shipped on all the drives is setup to make the drive the standard size for that sun part number. They have to do this since they (for many reasons) have many sources (diff. vendors, even diff. parts from the same vendor) for the actual disks they use for a particular Sun part number. This isn't new, I beleive IBM, EMC, HP, etc all do it also for the same reasons. I'm a little surprised that the engineers would suddenly stop doing it only on SSD's. But who knows. -Kyle > I take it back. Me. I am to prevent it from happening. And the technique > to do so is precisely as you've said. First slice every drive to be a > little smaller than actual. Then later if I get a replacement device for > the mirror, that's slightly smaller than the others, I have no reason to > care. > > _______________________________________________ > 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
