On Thu Jul 06, 2006 at 02:00:05PM -0400, Dan Easley wrote: > On 7/6/06, Pieter Palmers <pieterp@xxxxxxx> wrote: > >Paul Winkler wrote: > >> On Thu, Jul 06, 2006 at 01:43:40PM +0200, Pieter Palmers wrote: > >>> Modern harddisks use a lot of write caching on the controller to achieve > >>> decent performance. So when power goes down when there is data in the > >>> write cache, it is lost. The file system however 'thinks' that data has > >>> been written correctly. This hence results in file system corruption. > > Thanks much for this whole thread. It's added substance to what I > previously thought was just personal paranoia and suspicion. > > I've been under the impression it's cheaper to buy used UPS's and buy > replacement batteries for them. Has anyone done this to good results? im guessing 2 drives , synched nightly via rsync, or in a RAID configuration, is cheaper, and friendlier for the environment than huge/heavy UPS batteries. i guess i'd invest in that if the electricity infrastructure in my area was particularly bad. or in combination with daytime solar replenishing to run completely off-grid. soudns like overkill as a hedge against drive failure though. drives will fail.
