Technical information

Ordering Guide

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3.1 Upgrades and Migrations

For general Preparation and Planning materials, see http://www.cisco.com/go/ucmigration, Deployment tab, link

under Documentation for “Preparing for your Migration to Cisco Unified Communications Manager”.

This direction can also be stated as “Starting from Cisco Unified Communications Manager Version X on hardware A,

what do I need to order to upgrade/migrate to Cisco Unified Communications Manager Version Y on hardware B?”

Hardware changes may or may not be desired or required as part of the software upgrade.

This section covers the following scenarios, which are explained in more detail below:

1. Server Migrations - i.e. to a new, different or better server, such as a generation change such as Cisco MCS

7825-H1 to MCS 7825-H2, model change such as Cisco MCS 7825 to MCS 7835 or Cisco MCS 7835 to MCS

7845, manufacturer change such as Cisco MCS 7835-H to MCS 7835-I etc. If you just want to replace, get a

spare, or expand Rail Kits, Fans, Power Supplies, Memory, or Disk drives, see the ordering instructions for Cisco

MCS 7800 Media Convergence Servers.

2. Cisco Unified Communications Manager software upgrades with users, either with or without an associated

hardware change

3. Cisco Unified Communications Manager software upgrades without users, i.e., for Cisco TelePresence

™

Video-only deployments

Before making any orders for upgrades and migrations, first identify the “from” hardware and “from” Cisco Unified

Communications Manager version, and the desired “to” hardware or “to” Cisco Unified Communications Manager

version, depending on which one(s) you intend to change.

●

The Cisco Unified Communications Manager hardware compatibility matrix at

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6790/ps5748/ps378/prod_brochure0900aecd8062a4f9.

html will tell you if the desired “to” Cisco Unified Communications Manager version will work with your existing

hardware, or if a hardware upgrade or server migration is required.

●

The supported Cisco Unified Communications Manager direct upgrade paths at

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/compat/ccmcompmatr.html will tell you how many

“hops” it will take to get to the desired “to” Cisco Unified Communications Manager version. Old or earlier

releases may require a multihop upgrade path.

In general, most upgrades and migrations for which a direct software upgrade path exists will fall into one of the

following scenarios. If a scenario says server migration is optional, a hardware upgrade (RAM or disk) may still be

required to run the new Cisco Unified Communications Manager version. Figure 1 shows the server migration paths.