3 ms·
Backblaze use an in-house Java pseudo-RAID layer based on Reed-Solomon codes, with 17 data shards and 3 parity shards. There are some performance numbers here h
by mappu 11y ago
Backblaze use an in-house Java pseudo-RAID layer based on Reed-Solomon codes, with 17 data shards and 3 parity shards. There are some performance numbers here https://www.backblaze.com/blog/reed-solomon/ https://www.backblaze.com/blog/reed-solomon/ (2015).
- nwmcsween 11y agoI wouldn't mind understanding why, I'm assuming at the time ceph wasn't mature enough (and still somewhat is due to btrfs, yes I know it's optional).
- scurvy 11y agobtrfs isn't a requirement nor really a recommendation for production ceph clusters. It was really only there for weirdo benchers. Bluestore and rocks DB really changes the back-end story altogether. No more POSIX filesystem junk with journals and such.