Has anyone experimented with larger cluster sizes with the drive FSX is installed on?

YesI use 64K for my RAID0 array @ 256K STRIPE (professional RAID card, not motherboard RAID)Although that does not provide, per-say, a 'performance increase' what it does is provide a more stable install where by the drive FSX is installed to does not fragment any where near as much as it would if it was on the default 4K cluster format. That does aid in maintaining performance however if you are thinking FPS or file loads are better, not really. It will have a positive effect on file loads but nothing wildly dramatic. The combination of efficient reads and the less fragmentation plays into that with the right defrag solution.Downfall is you do lose disk space as the format cluster size increases based on the size of the drive.. larger the drive, the more space is lost to the 64K cluster format

You mean it's not the FSX magic bullet Nick... LOL!Thanks for the answer, getting ready to try a XPx64 experiment this weekend and "cluster size" popped into my head.--Ray

WARNINGYou can not use 64K for the OS... Windows x64 will now boot on a 64K clusterYou can only do that with a drive that does not have Windows on itThe 'magic bullet' is my entire list.. do that and you will get results. The 64K cluster format helps a tad too. its the combination of everything that provides the end result.. no such thing as 1 item doing that:)