11 Mar
2021
11 Mar
'21
8:35 p.m.
In my current hardware configurations each NVMe supports multiple OSDs. In my earlier nodes it is 8 OSDs sharing one NVMe (which is also too small). In the near term I will add NVMe to those nodes, but I'll still have 5 OSDs some OSDs, and 2 or 3 on all the others. So an NVMe failure will take out at least 2 OSDs. Becasue of this it seems potentially worthwhile to go through the trouble of defining failure domain = nvme to assure maximum resilience.
Do you have some test results of the increase of write performance using the osd's with the nvme? Just wondering what can be expected.