@HarryHUK wrote:
Hi,
I’ve been using ReadyNAS for around 10 years (OS6 on a 314 for 6 years) And they’ve been trouble free (touch wood).
They’ve been using btrfs for at least 6 years, albeit with their own RAID implementation (X-RAID) which looks superficially a bit like RAID5/6, but I’m thinking they must be doing something to mitigate the problems with RAID 5/6.
Basically with 4 drives, you get almost 3x the capacity of the smallest drive, and when you replace a drive, it auto-detects and re-builds the new drive from the other 3. It’s quite nifty, but takes a looooooooong time (when I updated from 4T drives to 8T, each drive swap took at least 24 hrs.)
So somehow each drive seems to be some combination of stripe and mirror, unlike RAID 10, there is no level of striped and mirror. As I said, Netgear seem to have confidence in them (it’s their reputation on the line).
So, here is the (possibly) naive question.
I’m wondering, is there some idea that could be borrowed? Or are they just mad? I’ve read something about mirroring metadata (including checksums?) across all drives, but striping data.Cheers. (Bought my years subscription btw. Still on a VM while I try it out. But that’s a story for a separate topic)
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