My eye was caught by the OCZ Synapse Cache II SSD, and I wondered if pairing a largish cache drive with a much larger HDD would be an effective way of getting near SSD performance on a number of vm guests otherwise stored on a HDD 'spinner'.
OCZ's advertising blurb makes the following claim:
The OCZ Synapse Series is optimized for caching applications to dynamically manage the Synapse SSD in conjunction with standard hard disk drives (HDDs), to provide users with SSD-level performance across the entire capacity of the HDD.
However I must admit I always take such claims with a pinch of salt, and I am uncertain if such cache block transfers play well with vms. Has anyone already played with this, or anything similar?