CUCM 14 Disk Usage 99% with 80GB HDD..

[Mohammadreza Hadi]

Hi everybody

i installed a CUCM 14 SU2 on a project, import VM machine using .ova file from cisco,
and i choosed the option which has 80 gig HDD..

>> problem is >> CUCM shows disk usage of active partition = 99%

is this will make any risk for us ?

in some documents i read about that, and in some of them, says it's ok & CUCM has been get what it wants..
the CUCM will not use anymore & don't want anymore space on his active partition..
and CUCM performance will be good & OK..

unless when you want to update CUCM, at that level we will hit problem..

is this correct?

[Vaijanath Sonvane · Accepted solution]

Hi @Mohammadreza Hadi,

80GB disk size is supported for CUCM v14 but high disk utilization can cause below issues:

• CUCM may become unstable, leading to crashes or unexpected reboots.
• Overall system performance can degrade significantly, causing delays in call processing and other operations.
• System updates and patches may not be applied successfully

To prevent these issues, it's essential to regularly monitor disk usage and clean up disk space. Below are some the links that covers disk clean up procedures:

https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/221038-troubleshoot-full-common-partition-in-cu.html

https://community.cisco.com/t5/unified-communications-infrastructure/cucm-how-to-lower-disk-usage-on-partitions/td-p/2983240

[Mohammadreza Hadi]

thanks dear @Vaijanath Sonvane 
 for your attention ^-^

did you also faced & experienced this issue in your projects ?..
sorry for question, i am asking about your experience because i want to learn more from you ^-^

[Vaijanath Sonvane]

Yes, many times during the upgrade or migration. 

[Mohammadreza Hadi]

OK.. many thanks @Vaijanath Sonvane  ^-^