5 ms·
raid 1 mirroring is pretty much only used to prevent downtime. So if your hard drive physically screws up, you still have all the boot sectors intact on the ot
by catch23 18y ago
raid 1 mirroring is pretty much only used to prevent downtime. So if your hard drive physically screws up, you still have all the boot sectors intact on the other drive so even a restart wouldn't kill you. I only use mirroring on disks with spinning platters, for solid state I just ignore mirroring. Solid state can go bad, but not as easily as magnetic metal spinning at 7200 times a minute.
- tdonia 18y agojust make sure you've accounted for any finite write limitations built in to your solid state drive. sure, it's not likely that'll you reach the limit but if you're successful & relying on a random sector distribution you could get there. and that could be just as problematic as a bad platter. http://en.wikipedia.org/wiki/Flash_memory#Limitations http://en.wikipedia.org/wiki/Flash_memory#Limitations
- dreish 18y agoThat should say "dramatically reduce downtime". A small number times a small number is still not zero, and it is possible, though highly unlikely, to suffer a second drive failure while operating in degraded mode. My understanding is that's not what happened in this case, though.
- tlb 18y agoIt's actually very common for both drives to fail at once. Examples: - case fans fail, everything overheats - room AC fails, everything overheats - power supply goes haywire, toasts drive electronics - box falls off the shelf, drives crash - fire or smoke damages drives - roof leaks, drips onto drives - one drive fails but nobody notices for a month until the next drive fails - burglars steal box No, not all these have happened to me.