[ovirt-users] Which hardware are you using for oVirt

Sun Mar 25 19:35:59 UTC 2018

Andy, Im using 2 node cluster:
-2 supermicro 6017 (2 Intel 2420(12C24T each node) 384Gb ram total, 10gbe.
all hosted engine via nfs

storage side: 2 SC836BE16-R1K28B(192gb arc cache) with raid 10 zfs+intel
slog serving iscsi at 10Gbe
80 VM's more or less.

regards,

2018-03-25 4:36 GMT-03:00 Andy Michielsen <andy.michielsen at gmail.com>:

> 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 <rightkicktech at 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.michielsen at 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 <andreil1 at 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,
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