<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 26, 2018 at 1:30 PM, Andrei Verovski <span dir="ltr"><<a href="mailto:andreil1@starlett.lv" target="_blank">andreil1@starlett.lv</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="word-wrap:break-word">Hi,<div><br></div><div><div>Since oVirt doesn’t support more then 1 host in data center with local storage domain as described here:</div><div><a href="http://lists.ovirt.org/pipermail/users/2018-January/086118.html" target="_blank">http://lists.ovirt.org/<wbr>pipermail/users/2018-January/<wbr>086118.html</a></div><div><br></div><div>I have to setup NFS server on node with VMs (on same node) access via NFS.</div><div>10 GB shared storage is in the future plans yet right now have only 2 nodes with local RAID on each.</div><div><br></div><div>Q: What is VM disk speed penalty (approx %) NFS vs Local RAID in oVirt data center storage? </div><div>Currently I have 2 VMs running our accounting/inventory control system which are critical to storage performance limits.</div></div><div>2 other VMs have very low disk activity.</div></div></blockquote><div><br></div><div>I don't know, but please remember there's both latency and throughput, both of which are somewhat affected. Throughput will benefit from jumbo frames, for example. Unfortunately it may affect latency a bit.</div><div>There was an interesting patch that if the NFS was local, bypassed the NFS[1]. It was never completed and merged.</div><div>Lastly, chapter 6 at hyper-converged guide (should be available in few hours) might be an interesting idea for you to consider - a single Gluster that can later expand.</div><div>Y.</div><div><br></div><div>[1] <a href="https://gerrit.ovirt.org/#/c/68822/">https://gerrit.ovirt.org/#/c/68822/</a></div><div>[2] <a href="https://ovirt.org/documentation/gluster-hyperconverged/Gluster_Hyperconverged_Guide/">https://ovirt.org/documentation/gluster-hyperconverged/Gluster_Hyperconverged_Guide/</a></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="word-wrap:break-word"><div><br></div><div>Thanks in advance</div><span class="gmail-HOEnZb"><font color="#888888"><div>Andrei Verovski</div><div><br></div></font></span></div><br>______________________________<wbr>_________________<br>
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