On Sun, 5 Feb 2006, David Liontooth wrote:
In designing an archival system, we're trying to find data on when it pays to power or spin the drives down versus keeping them running. Is there a difference between spinning up the drives from sleep and from a reboot? Leaving out the cost imposed on the (separate) operating system drive.
Hitachi claims "5 years (Surface temperature of HDA is 45°C or less) Life of the drive does not change in the case that the drive is used intermittently." for their ultrastar 10K300 drives. I suspect that the best estimates you're going to get is from the manufacturers, if you can find the right documents (OEM specifications, not marketing blurbs).
For their deskstar (sata/pata) drives I didn't find life time estimates beyond 50000 start-stop-cycles.
/Mattias Wadenstein - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
