-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 El 2007-03-08 a las 21:53 +0100, Camaleón escribió:
El 8/03/07, Carlos E. R. escribió:
Que no, que el calor no influye. Sólo por encima de 40 grados y en discos de cuatro años.
Pooos, ¿dónde lo leí? Ah, sí, en el otro estudio. Extraigo comentarios del informe Google sobre este tema:
"We can conclude that at moderate temperature ranges it is likely that there are other effects which affect failure rates much more strongly than temperatures do."
Y: Surprisingly, we found that temperature and activity levels were much less correlated with drive failures than previously reported. ... Our key ndings are: - Contrary to previously reported results, we found very little correlation between failure rates and either elevated temperature or activity levels. - Some SMART parameters (scan errors, reallocation counts, ofine real location counts, and probational counts) have a large impact on failure probability. - Given the lack of occurrence of predictive SMART signals on a large fraction of failed drives, it is unlikely that an accurate predictive failure model can be built based on these signals alone. (por cierto, el copy paste lo estoy haciendo con "less" :-p
Y en el informe de Carnegie Mellon University:
"The failure probability of disks depends for example on many factors, such as environmental factors, like temperature, that are shared by all disks in the system. When the temperature in a machine room is far outside nominal values, all disks in the room experience a higher than normal probability of failure."
Y en mi disco nuevo no consigo bajarlo de 40 :-(
Tampoco me parece elevado en exceso. ¿Tiene algún ventilador el disco?
A mi no me parece excesivo, pero es la temperatura para la que en el informe de google empiezan a subir los fallos. Tiene un ventilador compartido, y le llega menos aire que a los otros dos, que son más antiguos y están a 30 grados. Igual puedo ajustar un poco la ventilación.
Y el desgaste no lo he visto en su estudio.
Creo que este dato también lo tomé del informe de Carnegie Mellon University... a ver si lo encuentro...
Es que ese todavía no lo he leído.
"Interestingly, we observe little difference in replacement rates between SCSI, FC and SATA drives, potentially an indication that disk-independent factors, such as operating conditions, affect replacement rates more than component specific factors."
- -- Saludos Carlos E.R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Made with pgp4pine 1.76 iD8DBQFF8I0ctTMYHG2NR9URAoOPAJ0ZQaUrTfYsurfv17nSvql2Aq9kdACfencW qY2OqVO9UlUbEPzADYEU8k0= =ZMxE -----END PGP SIGNATURE-----