I am currently looking to build a new Rockstor server and a newbie to raid and BTRFS.
I am building an 8 drive system running on an LSI 9211 host running in IT mode,
I was looking to build a raid 6 array using all drives but have read many posts about power failures and unrecoverable data.
Could i build a 7 drive array and have a hot spare. Is this advisable or best way to proceed or should i just stay clear of raid 6 or 5 for that matter.
I have not experienced problems, except at the very beginning of my setup (crashes while adding and removing disks). But the current state of RAID56 would make me not recommend using it, except if you are ready for trouble, possibly loosing all data in worst case.
I dont feel safe, and am working on a backup for my Rockstor. The most critical data is allready backed up on other storage.
I would go RAID10, at least until RAID56 is considered stable. And I think that could be some time from now.