Tackling the VM I/O Blender Problem

February 9, 2011 No Comments

The breakthrough idea is in creating a dedicated disk-based log space for each virtual host that allows all writes to disk to occur serially, and combining that with a set of optimized de-staging algorithms to then asynchronously move that logged data to primary storage. The initial log writes are effectively insulated from any disk-based slowdown due to seek times or rotational latencies, because there is no randomness.

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