CUCM Upgade from 8.6(2) to 9.1(1a) requires re-installation ??

[etamminga]

Hi,

According to page 15, points 7-8-9, on the following document

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/elmuserguide/9_1_1/license_migration/CUCM_BK_CBF8B56A_00_cucm-license-upgrade-guide.pdf

You are required to re-install the complete cluster after upgrading to 9.1(1) and taking a DRS backup.

Is this really neccesairy? This would cause a tremendous downtime period.

Can someone please confirm or inform me otherwise?

Regards,

Erik Tamminga

[Kevin Roarty]

Hi Erik,

The referenced document and the steps within are specifically for migrating to 9.1 AND moving form a MCS to VMware platform.

There's no required re-install when upgrading to 9.1 and staying on the same platform (MCS or VMware).

HTH,

Kevin