Re: [ovirt-users] Hardware critique

Also keep in mind that extensive logging in the vm's can seriously impact your fs performance, so using a central syslogserver is a really good idea. /tony On 2018-04-06 17:03, Karli Sjöberg wrote: > > > Den 6 apr. 2018 15:46 skrev Jayme : > > Yaniv, > > I

Re: [ovirt-users] Hardware critique

Den 6 apr. 2018 15:46 skrev Jayme :Yaniv,I appreciate your input, thanks!  I understand that everyone's use case is different, but I was hoping to hear from some users that are using oVirt hyper-converged setup and get some input on the performance.  When I research GlusterFS I

Re: [ovirt-users] Hardware critique

It's likely possibile you will get more performance from a NFS server compared to Gluster. Specially if on your NFS server you have something like ZFS + SSD for L2ARC or ext4 + Bcache, but you get not redundancy. If you NFS server dies everything stops working, which is not the case with

Re: [ovirt-users] Hardware critique

Yaniv, I appreciate your input, thanks! I understand that everyone's use case is different, but I was hoping to hear from some users that are using oVirt hyper-converged setup and get some input on the performance. When I research GlusterFS I hear a lot about how it can be slow especially when

Re: [ovirt-users] Hardware critique

On Fri, Apr 6, 2018, 12:39 AM Jayme wrote: > Vincent, > > I've been back and forth on SSDs vs HDDs and can't really get a clear > answer. You are correct though, it would only equal 4TB usable in the end > which is pretty crazy but that amount of 7200 RPM HDDs equals about the

Re: [ovirt-users] Hardware critique

On Thu, Apr 5, 2018, 11:39 PM Vincent Royer wrote: > Jayme, > > I'm doing a very similar build, the only difference really is I am using > SSDs instead of HDDs. I have similar questions as you regarding expected > performance. Have you considered JBOD + NFS? Putting a

Re: [ovirt-users] Hardware critique

On Thu, Apr 5, 2018, 11:51 PM FERNANDO FREDIANI wrote: > I always found replica 3 a complete overkill. Don't know people made that > up that was necessary. Just looks good and costs a lot with little benefit. > It's not very easy to solve split brain with only 2. You

Re: [ovirt-users] Hardware critique

Well good, we can at least bounce ideas off each other, and I'm sure we'll get some good advice sooner or later! Best way to get good ideas on the internet is to post bad ones and wait ;) In the performance and sizing guide PDF, they make this statement: *Standard servers with 4:2 erasure coding

Re: [ovirt-users] Hardware critique

Vincent, I've been back and forth on SSDs vs HDDs and can't really get a clear answer. You are correct though, it would only equal 4TB usable in the end which is pretty crazy but that amount of 7200 RPM HDDs equals about the same cost as 3 2TB ssds would. I actually posted a question to this

Re: [ovirt-users] Hardware critique

I always found replica 3 a complete overkill. Don't know people made that up that was necessary. Just looks good and costs a lot with little benefit. Normally when using magnetic disks 2 copies are fine for most scenarios, but if using SSDs for similar scenarios depending on the configuration of

Re: [ovirt-users] Hardware critique

Jayme, I'm doing a very similar build, the only difference really is I am using SSDs instead of HDDs. I have similar questions as you regarding expected performance. Have you considered JBOD + NFS? Putting a Gluster Replica 3 on top of RAID 10 arrays sounds very safe, but my gosh the capacity

Re: [ovirt-users] Hardware critique

Thanks for your feedback. Any other opinions on this proposed setup? I'm very torn over using GlusterFS and what the expected performance may be, there seems to be little information out there. Would love to hear any feedback specifically from ovirt users on hyperconverged configurations. On

Re: [ovirt-users] Hardware critique

Hi, You should be ok with the setup. I am running around 20 vms (linux and windows, small and medium size) with the half of your specs. With 10G network replica 3 is ok. Alex On Wed, Apr 4, 2018, 16:13 Jayme wrote: > I'm spec'ing hardware for a 3-node oVirt build (on