<div dir="ltr">I've increased the UCM/CUC 10.x VMs to 6 GB to prevent memory issues and haven't had any problems. I keep the bug below folded on some paper tucked away in my wallet just in case.<div><br></div><div><a href="https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuo38244">https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuo38244</a><br><div><b><br></b></div><div><div class=""><b>increase the threshold for LowAvailableVirtualMemory from 75% to 85%</b></div>
<div class="">CSCuq75767</div><div class=""><br></div>
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<div id="descriptionArrowImage" title="Expand collapse description" class="" tabindex="21"></div><div class=""><a name="description">Description</a></div>
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<div class=""><b>Symptom:</b><br>A CUCM Publisher running version 10.5(1) experiencing LowAvailableVirtualMemory alerts.<br><br><b>Conditions:</b><br>This is most commonly seen on Publisher nodes running version 10.5(1) with the 1k or 2.5k OVA Templates.<br><br><b>Workaround:</b><br>Increase the RTMT LowAvailableVirtualMemory threshold from 75% to 85%.<br><br>or<br><br>Shut
down the virtual machine, increase the virtual machine memory capacity
by 2GB. This increase will be required for CUCM 11.0(1)<br><br><b>Further Problem Description:</b><br>This is not a leak or cause for concern if the VM Utilization should stabilizes under 85%. <br><br>If Virtual Memory utilization increases above 90% there is most likely a problem which should be investigated further</div></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Mar 10, 2016 at 9:53 AM, Anthony Holloway <span dir="ltr"><<a href="mailto:avholloway+cisco-voip@gmail.com" target="_blank">avholloway+cisco-voip@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Nick,</div><div><br></div>It's actually pretty common, when doing upgrades, that minimum RAM requirements go up, and you have to increase the allocated RAM and reservation.<div><br></div><div>Example:</div><div><br></div><div><a href="http://docwiki.cisco.com/wiki/Virtualization_for_Cisco_Unified_Communications_Manager_(CUCM)#Version_10.x" target="_blank">CUCM 10x 2,500 OVA requires 4GB RAM</a></div><div><a href="http://docwiki.cisco.com/wiki/Virtualization_for_Cisco_Unified_Communications_Manager_(CUCM)#Version_11.x" target="_blank">CUCM 11x 2,500 OVA requires 6GB RAM</a></div><div><br></div><div>Therefore, an upgrade on a 2,500 OVA from 10x to 11x causes a RAM increase</div><div><br></div><div>And it's stated as having changed in the <a href="http://www.cisco.com/web/software/283088407/126036/cucm-11.0.ova.readme.txt" target="_blank">OVA for v11x Read Me</a></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">The following are changes from the OVA in the previous (CUCM 10.x) release:</pre></div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"> 1) vRAM size has been increased by 2GB for 11.0(1) and above releases.</pre></div></blockquote><div>The procedure is also thinly covered in the OVA Read Me as well:</div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap">Upgrades from previous release:</pre></div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"> 1) Power off the VM.</pre></div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"> 2) <span style="background-color:rgb(255,242,204)">Modify the vRAM</span>, CPU, <span style="background-color:rgb(255,242,204)">reservations</span>,and OS based on the changes listed above via the vmware-viclient. Note, do not attempt to change the number of disks or disk size.</pre></div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"> 3) Modify the Network Adapter. See “Modifying the Network Adapter” section.</pre></div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"> 4) Modify the VM Version if previously using VM Version 7. See "Instructions to upgrade the virtual hardware version" section.</pre></div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"> 5) Save the changes</pre></div><div><pre style="color:rgb(0,0,0);word-wrap:break-word;white-space:pre-wrap"> 6) Power back on the VM</pre></div></blockquote><div><div>I say all of that, not because you indicated that you are performing an upgrade, but simply to illustrate that there are some cases where you MUST change the RAM, and therefore it makes sense that changing RAM is trivial and supported. Mostly...</div><div><br></div><div>Because, a negative issue I've seen come of this, is a UCCX system where it was originally deployed for 100 Agents, and someone increased the RAM, and then the system started complaining that it was a 300 Agent system with insufficient resources (everything except RAM). The system was working fine, mind you, it was just the annoying warning banner in AppAdmin. So, get the warning to go away, that person just dropped the RAM back down to the original value.<br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Thu, Mar 10, 2016 at 8:35 AM, Barnett, Nick <span dir="ltr"><<a href="mailto:Nick.Barnett@countryfinancial.com" target="_blank">Nick.Barnett@countryfinancial.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
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<p class="MsoNormal">Are there any negative issues that arise from increasing the RAM on a CUCM 10.0 or CUC 10.5 VM? I haven’t ever seen anyone talk about it. I assume that is because there is typically an underlying issue that should be resolved rather than
just increasing RAM. Does anyone have any input on this?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
<p class="MsoNormal">Nick<u></u><u></u></p>
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