On Oct 5, 2010, at 2:47 PM, casper....@sun.com wrote: > > > I've seen several important features when selecting a drive for > a mirror: > > TLER (the ability of the drive to timeout a command) > sector size (native vs virtual) > power use (specifically at home) > performance (mostly for work) > price > > I've heard scary stories about a mismatch of the native sector size and > unaligned Solaris partitions (4K sectors, unaligned cylinder). >
Yes, avoiding the 4K sector sizes is a huge issue right now too - another item I forgot on the reasons to absolutely avoid those WD 'green' drives. Three good reasons to avoid WD 'green' drives for ZFS... - TLER issues - IntelliPower head park issues - 4K sector size issues ...they are an absolutely nightmare. The WD 1TB 'enterprise' drives are still 512 sector size and safe to use, who knows though, maybe they just started shipping with 4K sector size as I write this e-mail? Another annoying thing with the whole 4K sector size, is what happens when you need to replace drives next year, or the year after? That part has me worried on this whole 4K sector migration thing more than what to buy today. Given the choice, I would prefer to buy 4K sector size now, but operating system support is still limited. Does anybody know if there any vendors that are shipping 4K sector drives that have a jumper option to make them 512 size? WD has a jumper, but is there explicitly to work with WindowsXP, and is not a real way to dumb down the drive to 512. I would presume that any vendor that is shipping 4K sector size drives now, with a jumper to make it 'real' 512, would be supporting that over the long run? I would be interested, and probably others would too, on what the original poster finally decides on this? - Mike
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