Grande dica! Muito obrigado.
Gustavo Molina wrote: > > Hello antonio, > > Saturday, June 10, 2006, 6:07:22 PM, you wrote: > > > Percebi que os fatores predominantes na durabilidade eram o MAL TRATO > > qualquer porradinha depois de algum tempo cobrava seu preço E mais > importante: > > fonte de alimentação..... > > Os HDs aguentam vários G's, se estiverem em park mode (não rodando). > EM MINHA > OPINIÃO é improvável que um impacto faça um estrago nele, a não ser > que seja bem > forte. > > Um fator menos conhecido do que deveria ser, mas que tem importância > crítica, é > a temperatura. Deveria receber especial atenção em um país tropical como o > nosso. Mas mal se fala em temperatura e conservação de HD's. > > Segundo o http://www.hddtemp.com/home/index.html, > <http://www.hddtemp.com/home/index.html,> a temperatura ótima para HD's > é de até uns 40 graus. Se subir 10 graus, já há mais do dobro de chance de > falhas. Subindo mais, mais chances de falha. Estando mais frio, a > durabilidade é > maior. Tome essa opinião com uma pitada de sal porque eles vendem um > programa > para medir a temperatura. > > Mas de qualquer forma, há relação direta entre temperatura e durabilidade. > > Se quiser saber a temperatura de seu HD IDE, pode ser que você nem > saiba, mas > ele já tem um termômetro interno. Você pode ler os dados através do padrão > S.M.A.R.T. . Eu uso e recomendo esse freeware: > http://www.rsdsoft.com/hdd-thermometer/index.php > <http://www.rsdsoft.com/hdd-thermometer/index.php> > que dá a temperatura e aparece no tray. > > Quem quiser ler um pouco: > > Disk drives are complex electro-mechanical devices that can suffer > performance degradation or failures due to a single event or a > combination of events occurring over time. Environmental conditions > that affect drive reliability include ambient temperature, cooling air > flow rate, voltage, duty cycle, shock/vibration, and relative > humidity. Fortunately, it is possible to predict certain types of > failures by measuring environmental conditions. One of the worst > enemies of hard disk drives is heat. Within a drive, the reliability > of both the electronics and the mechanics (such as the spindle motor > and actuator bearings) degrades as temperature rises. Running any disk > drive at extreme temperatures for long periods of time is detrimental > and can eventually lead to permanent data loss. > Drive reliability decreases significantly as temperature rises above > recommended levels > > Figure 2 shows the dramatic effect that temperature has on the overall > reliability of a hard disk drive. Derivations from a nominal operating > temperature (assumed to be maintained over the life of a drive) can > result in a derivation from the nominal failure rate. As the > temperature exceeds the recommended level, the failure rate increases > two to three percent for every one degree rise above it. For example, > a hard disk drive running for an extended period of time at five > degrees above the recommended temperature can experience an increase > in failure rate of 10 to 15 percent. Likewise, operating a drive below > the recommended temperature can extend drive life. > > Several failure modes within a disk drive are exacerbated by > temperature. Thermal tilt of the disk stack and actuator arms can > occur very quickly and cause off-track writes, corrupting data on > adjacent cylinders. Outgassing of the lubricants in the spindle motor > and voice coil motor occurs at high temperatures (experienced over a > relatively short 30-60 day time period), which can lead to stiction > failures or a possible head crash. Over an extended period of time, > the bearings can wear out and cause mechanical failures. > > Heat can build up within computer systems due to a clogged fan, > failure of air conditioning in a room, operating more drives than the > cooling system can handle, and so on. Unfortunately, these conditions > can go completely unnoticed until a failure occurs. Because of the > essential nature of today's workstations and servers, such risks are > unacceptable for many users. What is needed is a way to identify > high-temperature situations before they affect data integrity. > > --- > Gustavo Molina - [EMAIL PROTECTED] <mailto:gustavo%40molina.com.br> > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Protect your PC from spy ware with award winning anti spy technology. It's free. http://us.click.yahoo.com/97bhrC/LGxNAA/yQLSAA/IRislB/TM --------------------------------------------------------------------~-> --- Não leve nada pro lado pessoal. Apenas divirta-se. Comentários: www.yahoogroups.com/group/goldenlist-L/messages Newsletter: www.yahoogroups.com/group/goldenlist/messages Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/goldenlist-L/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
