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by Corrado
4911 days ago
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Another way to think about this problem is to turn it on its head and assume that hard drives will fail and make it a strength and not a weakness. Something like OpenStack Storage[1] is built around the idea that hard drives are transient and replacing them should be painless. In fact, the more drives you have the less problems you have. Basically, you keep multiple copies of the same data across different clusters of hardware. If a drive or two (or ten) go bad, just replace them, there is no rebuild time. Sure, it costs some disk space to keep n copies of data, but drives are just getting cheaper and there are de-duplication schemes being developed to help with this. Its not like RAID-6 is super efficient either. Just my two cents... [1] http://www.openstack.org/software/openstack-storage/ |
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