Inside the Briefcase
Tackling the VM I/O Blender Problem
February 9, 2011 No CommentsThe 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.
