XPEnology? reliable?

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http://hardforum.com – I have learned about XPEnology. I am currently using FreeNAS. One thing I like about Synology products is that I can use an array of different sizes of drives with their hybrid raid technology, SHR1 SHR2. Since XPEnology is an x86 Synology from the open source parts and the severe lack of documentation, do most people trust it with their data? I am curious about using XPEnology to create the SHR raid, and then use some other form of linux and mount the LVM? How does replacing disks work from there? (Hardware)