Question: I just read about Hybrid RAID arrays consisting of SSDs and common HDDs which are supported by Adaptec’s RAID controllers.
In short, what cons and pros has such a RAID solution?
Answer: From the link:
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Adaptec Hybrid RAID Solution Adaptec ?controllers write to both HDD and SSD ?and read from SSD 100% of the time ?resulting in maximum performance.
The writes and maximum volume size will be capped at the smallest/slowest disk like any other mixed RAID. The advantage is that reads are all from the SSD, which is where it really excels. It allows for the redundancy of RAID-1 and read-performance of a SSD without the cost of two SSDs.
Sure there is a write penalty, but for most home users they are read-heavy not write-heavy.