Related note – will be trying this on 2008 R2 (physical, not virtual) and look forward to the results. Should be very interesting considering the success I have had installing my customer base with accelerated volumes on their client machines. The performance in just a consumer level read cache has been noticeable to my customers, to the point where they can identify their hot data based on the access time improvements from the caching algorithm. Regardless of how long NAND based SSDs continue to be relevant (see ‘6.5nm lithography and above’) they are, in theory and practice, the simplest way to alleviate the bottlenecks that present in day-to-day storage applications for home users and sysadmins. Big fan +1

So, you used a new feature from your RAID controller vendor, without updating drivers or anything and then experienced issues? Best to call Sherlock Holmes for this one. Before doing anything of this nature create a backup, to a seperate RAID controller or ideally a seperate machine, to ensure that if something does go wrong you have all your data still. It’s the difference between being set back 6 hours and being set back 2 weeks plus time to recover data. Honestly, computer maintenance 101. I shudder to think if you are a sysAdmin, as this would be the most basic part of your core duties – data integrity.

After 1 week of operation the SDD now totally failed.Currently I am rebuilding the RAID 5.
Now I heard “never use SSD alone, allways RAID1 in case of Fail”.

I had 1 SSD only (broken) and settings for READ/WRITE cache.
Cross your fingers that I’ll get it back online or min. 2 weeks of data are totally lossed!