Отправлено с iPhone
30 авг. 2016 г., в 11:55, Lindsay Mathieson <lindsay.mathieson@gmail.com> написал(а):
On 30/08/2016 6:35 PM, Richard Brown wrote: btrfs' RAID 5/6 implementation may not be one of the best ones out there, but all of them put data at risk thanks to the wonders of the write hole.
Incorrect, ZFS does not have the write hole.
And RAID6 has one big advantage over RAID10 - it can always lose up to two drives without loosing data. With RAID10 if two drives are from the same mirror then all data is lost.
Note that btrfs RAID10 allows single failed drive - due to allocation pattern it is unpredictable whether loss of *any* second drive will result in data loss.
And of course with RAIDZ3 you can lose up to three drives.
-- Lindsay Mathieson
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