TG Daily is reporting that Microsoft will "require" hybrid hard drives for mobile computers starting June 1, 2007. This appears to be a misunderstanding of Microsoft's requirements, perhaps compounded by the action going on at TechEd. The Windows Logo Device Program Requirements document (v 3.01), which they reference, was in fact recently updated. However, it does not indicate that hybrid hard drives are required, despite their assertions.
"Storage Requirement 0005," as it is called, is listed as an optional requirement. Hybrid hard drives are not required by Microsoft. Rather, if an OEM decides to use a hybrid hard drive, the following conditions apply:
A minimum of 50MB of non-volatile cache must be exposed to Windows.The cache must be able to perform sequential reads with a throughput of at least 16MB/sec, sequential writes at least 8MB/sec (16MB/sec is highly recommended for optimal
performance for machine hibernation).The cache must be able to perform random reads and writes with a throughput of at least 4MB/sec.
The "requirement [that] will go into effect for premium mobile systems in June 1 2007" is only that implementations follow these outlines in the event that hybrid hard drives are used.
I must say, when I first read the TG Daily story I was excited, but it quickly dawned on me how foolish it would be for Microsoft to require unproven technology to be placed in laptops so quickly. A quick check with a source at a large OEM confirmed my suspicions: not only is it unlikely that Microsoft would require such a thing, but OEMs would balk at being told that they had to use the more expensive drives merely to get Vista Premium "stickering."