Purge Log Files by Changing the Log Partition Watermarks I used RTMT to decrease the Low and High logging watermark to 45 and 40 respectively (and restarted the log partition monitoring service) to create room. The first attempt to launch the upgrade on the Pub failed with the old “common parition doesn’t have enough space” business.
To save time during the upgrade window, the day before I preloaded the 11.5 ISO on my remote ESXi datastores so that it wouldn’t take forever for the ISO to SFTP over to the remote offices (they have limited bandwidth), then I attached those ISOs as virtual DVDs to the CUCM servers via vShpere and then launched those upgrades as though they were coming from DVD instead of a remote file server. This will cause the partition to be unaligned and you’ll get to rebuild CUC from scratch. I investigated increasing my HDD from 160 to 200GB, but found out that CUC does NOT support dynamic resize of the HDD. ova files define a 200GB HDD for the bigger VM. On a site note, I noticed that the new Unity Connection (CUC) 11.5. The upgrade ran normally and took a quite a while for the switch-version to complete. If you leave it at 4GB it will not function properly at all.) (This was something I ran into when going to 11.0. If you’re upgrading from 10.x or earlier it is CRITICAL to increase your VM RAM to 6GB. I also ran a utils iothrottle disable to make the upgrade run faster (since it was being done after hours.)
#Cisco cucm 8.6 upgrade license install
The install of the patch is straightfoward and does not require a reboot. You must apply ciscocm.cuc_11.5SU1_pre_ before you upgrade to 11.5 because of bugid CSCvb02774.
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