On 23 Oct 2005 23:39:00 +0200 Rainer Zocholl wrote: > > I have a VDR system with 2xFF card and 4 Harddisks. > > > > Now i'm not sure, if this is a good idea and hwoto do it. > > > > I have enable this powersaving, has it any disadvantage to the > > livetime of the harddisk? > > No. Not if you don't spin down it every 2sec for 1sec 365*24h Wikipedia article on hard disks (http://en.wikipedia.org/wiki/Hard_disk) claims that some desktop hard drives are rated to only 50,000 start-stop cycles. That means having 10 cycles a day amounts to a lifetime of 13.7 years. However, the number of 50,000 cycles has been measured with new drives, not 5 year old ones. In practice the drive can be expected to fail much sooner. How much sooner, that is hard to say, but with these numbers the normal 3 - 5 cycles / day would probably be just fine. > Or replace the 4 small disks with one big! > If one disk requires 10W and run 7*24h it will generate costs > about (currently) 10..15 Euro (in Germany). > 3 disks 45 oy > 200GB Disk 90 oy: > in less than 2 years the disk was paid by your energy company... Unless you live far in the North (or even further in the South) and have partially electric heating. Then it is probably better to leave those disks spinning and releasing all that heat to the room. Oh well, it's the time of year to overclock those CPUs again :) -- Niko Mikkil?
