I'd be very curious about your observations about where/when/how much difference this makes. Would you be willing to share what you found? eg,
- what class of device/count show benefit, and at what point does it have a detrimental effect?
- can...
This is the wrong question. Ceph is not really meant to be used for "losing servers."
The most common 3/2 replication rule can sustain a host being down safely. it doesnt matter how many nodes you have- SOME placement groups will be on OSDs that...
The Proxmox devs are usually pretty good about incorporating the newest openzfs into the stack. It may already be in the test repo; in any case it should be relatively soon.
I wouldn't if I were you. this is a version 1.0 release for this...
number of hosts isnt directly related to your size rules. A typical replication group is set to 3:2 where 3 osd's are required for healthy operation and 2 is the minimum osd count required for write access. such a pool would need a minimum of 3...
it all depends on your orchestration. you can spin up the replacement, turn off the nic on the source, turn on the nic on the destination. virtually no downtime.
I was not aware of the limitation. good to know.
This is completely in your hands...
You can, in more then one way. simplest is to use vzdump to make a backup and then restore on the destination node.
That is the simpler method, but using backup/restore method is safer AND provides you with a current backup.
yes. PVE has a tool...
understand what @cheiss is telling you. you shouldnt use dhcp for any ACTUAL purpose; if you want to just test an interface using dhcp all you have to do is
dhclient [interface]
yes. a few items of note:
1. you mentioned you want nvme for "power consumption." it may surprise you to learn nvme consume a LOT more power then HDDs.
2. The setup you're describing is for a production dataset and a backup. if you're already...
in that case:
possible but likely not necessary. Your initial problem report is that you're running out of capacity- not that you want to increase fault tolerance. if thats not a requirement there's no reason to add the complexity- just add a...
yes.
You can wipe the disks are reformat them with zfs, sure.
you've described the process pretty clearly. As long as what you end up with is workable for you, the only thing I would add is to make sure you have a good backup before proceeding.
a paid or scissors can be used to kill. it doesnt mean you get rid of all your scissors.
yes, nmap can be run to leak data, but that doesnt mean that the LEAKED DATA is of any harm or consequence to you. This falls into the more "theoretical"...