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, 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 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] ------------------------ Yahoo! Groups Sponsor --------------------~--> Everything you need is one click away. Make Yahoo! your home page now. http://us.click.yahoo.com/AHchtC/4FxNAA/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/
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