Posts by burjoes 5 publicly visible posts • joined 26 Aug 2014
I'm very curious about the failure rate of hard drives that spin up and down so often. In my experience, doing data center moves, for example, drives that are more than a couple of years old have a drastically higher failure rate when powered off then back on. I haven't seen MTBF comparison from constantly-spinning drives vs those that are powered off and back on regularly - anyone seen such reports?
if they were down to 1 nanosecond and 50 nanoseconds, a 5000% increase would sound amazing - and of course, nanosecond latency would be! But an application actually benefiting from 1ms less latency at the ~1ms level is a different question.
While there may be some applications and instances where it is helpful, do you really feel that it is significant in a reasonable percentage of real world use cases?
Just wanted to remind folks that dedupe is a very CPU intensive task. So when you have 24 x 2TB or 4TB drives in a shelf, getting the advertised 300 - 600TB of actual data on there will be really tough.
I know some vendors have struggled with this, but not sure of the state of dedup'ing large pools across the board.
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