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I have change yet our cluster with internal IP and all work fine, no more message in syslog. @fireon, I just refer to node where have been created the cluster (bindnetaddr)... Sorry for the "master" word that's not correct... THANKS A LOT FOR YOUR HELP (@Jarek and @fireon)!

So we can resume it on : - Or use ZFS RAID software (perhaps the better option if it's possible) - Or use LVM if RAID hardware... ZFS on RAID HW seem have some risk for data...

It was what I do at first time, but when see the failure (with my bad action of offline/online in RAID setup, when it would be offline/rebuild action), I decide to go back with ZFS and still with LVM. As I see, the perf are a few worst, but still very good for us. @janos, also read that RAID0...

Ok, sorry, seem I can do it as described in "Separate After Cluster Creation" section, I will try tomorrow and hope that will stop syslog warning. Thanks for your help...

Tomorrow I will recieve our SPF cable to have internal network, can I easily change cluster IP? I have virtual working on node1 who is the cluster master, but no for now in the other 3 nodes that are slaves nodes.

Well, for now, I not have yet the private network isetup n other node, but why it's an so very bad idea? they are connected correctly to an switch at 1Gb/s and there is no problem in connection communicacion, explain a little more why can be the cause of these message please...

Hello I am seeing some warning in syslog : Nov 12 10:05:41 node1 corosync[25795]: alert [TOTEM ] Invalid packet data Nov 12 10:05:41 node1 corosync[25795]: [TOTEM ] Digest does not match Nov 12 10:05:41 node1 corosync[25795]: [TOTEM ] Received message has invalid digest... ignoring. Nov...

I understand that you talk about RAID HW and ZFS... Well, there is not only one voice about this, for this I wrote this post, I am no trying to convince myself about nothing, only post an question to recieve answers . I finally decide to reinstall my nodes in ext4/LVM as I can't use RAID...

Well, really I do an mistake as I put offline an disk, and then, not do an rebuilt but an simple "online" when the correct option would be "rebuild". But this have brake our ZFS filesystem (it was an test server for now). It's also possible that can break ext4?

I know it, but my situation is this one... I have this RAID card and have to use it to have access to disk, change card can't be an solution for now because need to use yet the server.... I have try the same test in an RAID10 with ZFS and ext4/lvm, perf seem a little better en ZFS, but if an...

Hello I know that the better way to use ZFS is with no HW RAID, but I have an C6220 with lsi 9265 raid card. It's a bit difficult to flash it to get IT-MODE so I have build and RAID10 (with 6 SSD kingston DC) and install proxmox in ZFS 0 over the virtual disk. I was creating the nagio RAID...

Also understand that always use software RAID (is with various disk, deskop sometime are with an single disk)? Do you use trim funcion in this case with SSD?

I talk about proxmox replication funcionality, not ZFS system, sorry for the confusion of my last message...

Firstly, thanks a lot for your help! Be sure I will try remenber in some month to tell us if I will in the good way with this SSD type or not (Our hosting user are not heavy user and we have an cheaper service, for this it's some dificult to have an very expensive SSD...). For now we have do...

Well, finaly I will buy kingstom DC400 (SEDC400S37), as they are for entreprise, but no so expensive as intel. The lifetime is no so good of an intel, but better than the crucial MX300 that I would use at first time, and are MLC and not TLC... Is this an good choice for limited budget?

Well, I have try the replication on microserver and proxmox 5 and have stop it for various problem that appear in 2 forum post with other user with similar problem (one of the problem is replication locked, with pvedaemon and pvesr at 100% cpus and other problem is replication every minutes when...

Thanks Oliver and thanks guletz @guletz, I will revieve the server the next week, I will try to do some I/O test with and without HW RAID to review performance before choosing, I admit that... not use HW RAID, having an RAID card, it's a few dificil to take this decision (I have seached an...

Hello I will finaly choose to do an RAID10 Hardware, and Install Proxmox on it in ZFS because I think that HW raid had to use less CPU resources than RAID software... Then, I have another important doubt, I think I will use Consumer SSD disk, I know that a lot of person notify about this and...

Well, I have dual 10Gbs on all node, I need one of the 10Gbs will be for QNAP connection and backup but other will be available. I have read a lot of problem perf with ceph and for this I have not review this option for now... I need really an good stability now and for this, think to RAID10...

I have actually virtual server (KVM) on an very low profiles servers (Atom C2750, with 8G RAM and one no entreprise SSD disk). As I don't have redundancy (only 1 disk), I firstly use DRBD between 2 server to have some RAID1 security, but DRBD was often broken, so I buy an QNAP (ES1640DC-V2) in...