Monday, February 2, 2009

Failure Trends in a Large Disk Drive Population

Failure Trends in a Large Disk Drive Population

The virtue of this paper : REAL numbers.

As the size of system is growing, only a handful of large company is able to see what's going on with that size. And this makes the life of researchers without the access to large resources harder. Cloud computing would help in conducting experiment in larger scale & make it more convincing.

This paper shows some interesting statistics on disk driver failure. It is not surprising that the failure is strongly correlated to model number, but this suggests that the trends could change as technology evolves. It would be interesting to see what will look like with SSD, which has different characteristics from HDD. In case of SSD, we may want to look more, e.g. writing pattern / locality, as SSD is worning out.

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