Hello Alex, Thanks for sharing. Much appriciated.
I believe my setup would need 96 Gb off RAM in each host, and would need about at least 3 Tb of storage. Probably 4 Tb would be beter if I want to work with snapshots. (Will be running mostly windows 2016 servers or windows 10 desktops with 6Gb off RAM and 100 Gb of disks) I agree that a 10 Gb network for storage would be very beneficial. Now If I can figure out how to set up a glusterfs on a 3 node cluster in oVirt 4.2 just for the data storage. I ‘m golden to get started. :-) Kind regards. > On 24 Mar 2018, at 20:08, Alex K <rightkickt...@gmail.com> wrote: > > I have 2 or 3 node clusters with following hardware (all with self-hosted > engine) : > > 2 node cluster: > RAM: 64 GB per host > CPU: 8 cores per host > Storage: 4x 1TB SAS in RAID10 > NIC: 2x Gbit > VMs: 20 > > The above, although I would like to have had a third NIC for gluster storage > redundancy, it is running smoothly for quite some time and without > performance issues. > The VMs it is running are not high on IO (mostly small Linux servers). > > 3 node clusters: > RAM: 32 GB per host > CPU: 16 cores per host > Storage: 5x 600GB in RAID5 (not ideal but I had to gain some storage space > without purchasing extra disks) > NIC: 6x Gbit > VMs: less then 10 large Windows VMs (Windows 2016 server and Windows 10) > > For your setup (30 VMs) I would rather go with RAID10 SAS disks and at least > a dual 10Gbit NIC dedicated to the gluster traffic only. > > Alex > > >> On Sat, Mar 24, 2018 at 1:24 PM, Andy Michielsen <andy.michiel...@gmail.com> >> wrote: >> Hello Andrei, >> >> Thank you very much for sharing info on your hardware setup. Very >> informative. >> >> At this moment I have my ovirt engine on our vmware environment which is >> fine for good backup and restore. >> >> I have 4 nodes running now all different in make and model with local >> storage and it works but lacks performance a bit. >> >> But I can get my hands on some old dell’s R415 with 96 Gb of ram and 2 >> quadcores and 6 x 1 Gb nic’s. They all come with 2 x 146 Gb 15000 rpm’s >> harddisks. This isn’t bad but I will add more RAM for starters. Also I would >> like to have some good redundant storage for this too and the servers have >> limited space to add that. >> >> Hopefully others will also share there setups and expirience like you did. >> >> Kind regards. >> >>> On 24 Mar 2018, at 10:35, Andrei Verovski <andre...@starlett.lv> wrote: >>> >>> Hi, >>> >>> HL ProLiant DL380, dual Xeon >>> 120 GB RAID L1 for system >>> 2 TB RAID L10 for VM disks >>> 5 VMs, 3 Linux, 2 Windows >>> Total CPU load most of the time is low, high level of activity related to >>> disk. >>> Host engine under KVM appliance on SuSE, can be easily moved, backed up, >>> copied, experimented with, etc. >>> >>> You'll have to use servers with more RAM and storage than main. >>> More then one NIC required if some of your VMs are on different subnets, >>> e.g. 1 in internal zone and 2nd on DMZ. >>> For your setup 10 GB NICs + L3 Switch for ovirtmgmt. >>> >>> BTW, I would suggest to have several separate hardware RAIDs unless you >>> have SSD, otherwise limit of the disk system I/O will be a bottleneck. >>> Consider SSD L1 RAID for heavy-loaded databases. >>> >>> Please note many cheap SSDs do NOT work reliably with SAS controllers even >>> in SATA mode. >>> >>> For example, I supposed to use 2 x WD Green SSD configures as RAID L1 for >>> OS. >>> It was possible to install system, yet under heavy load simulated with >>> iozone disk system freeze, rendering OS unbootable. >>> Same crash was experienced with 512GB KingFast SSD connected to >>> broadcom/AMCC SAS RAID Card. >>> >>> >>>> On 03/24/2018 10:33 AM, Andy Michielsen wrote: >>>> Hi all, >>>> >>>> Not sure if this is the place to be asking this but I was wondering which >>>> hardware you all are using and why in order for me to see what I would be >>>> needing. >>>> >>>> I would like to set up a HA cluster consisting off 3 hosts to be able to >>>> run 30 vm’s. >>>> The engine, I can run on an other server. The hosts can be fitted with the >>>> storage and share the space through glusterfs. I would think I will be >>>> needing at least 3 nic’s but would be able to install ovn. (Are 1gb nic’s >>>> sufficient ?) >>>> >>>> Any input you guys would like to share would be greatly appriciated. >>>> >>>> Thanks, >>>> _______________________________________________ >>>> Users mailing list >>>> Users@ovirt.org >>>> http://lists.ovirt.org/mailman/listinfo/users >>> >> >> _______________________________________________ >> Users mailing list >> Users@ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >> >
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