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Physical Memory Recommendations for Cisco CallManager Vers. 4.0

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Product Bulletin No. 2864

Cisco® CallManager Version 4.0 provides many improvements to security, interoperability, functionality, and productivity that were not included in previous versions of Cisco CallManager. The new feature set of Cisco CallManager 4.0 requires additional server memory in order to run successfully.

In response to recent data from Cisco Systems ® labs and customers, Cisco has increased the minimum recommended amount of physical memory required to successfully operate Cisco CallManager clusters that are running Version 4.0 and later.
This product bulletin summarizes the new memory recommendations.

PUBLISHER MEMORY

Memory required for a Cisco CallManager publisher server follows:

• Cisco recommends a minimum of 1 GB of physical memory on all servers running Cisco CallManager 4.0 and higher. This includes both publisher and subscriber servers.

• Additional memory beyond 1 GB is required if you are doing two or more of the following:

– Using the Cisco AVVID (Architecture for Voice, Video and Integrated Data) XML Layer (AXL) interface or performing Structured Query Language (SQL) queries against the Cisco CallManager database

– Running the Cisco IP Telephony Backup and Restore System (BARS) application

– Using Cisco CallManager Serviceability Webpages and Real-Time Monitoring tool

– Using Personal Address Book (PAB)

– Using third-party billing applications

• If the Cisco CallManager publisher is also operating as a primary or backup call processing agent, additional memory is required to run Cisco CallManager 4.0 and later. This means that a server that is acting as the database publisher and has the ccm.exe or cti.exe service(s) running requires additional memory.

Table 1 outlines the minimum memory recommendations for Cisco CallManager publishers running Version 4.0 and later.

Table 1. Memory Requirements for Cisco CallManager Publishers Running Version 4.0 and Later

Condition or Server

Cisco 7815 Media Convergence Server (MCS)

Cisco 7825 MCS

Cisco 7835 MCS

Base publisher memory requirements

1 GB

1 GB

1 GB

Publisher that is running Cisco CallManager service

1.5 GB

2 GB recommended

2 GB

2 GB

Publisher running two or more of the services listed previously

1.5 GB

2 GB recommended

2 GB

2 GB

SUBSCRIBER MEMORY

Memory required for a Cisco CallManager subscriber server follows:

• Cisco recommends a minimum of 1 GB of physical memory on all servers running Cisco CallManager 4.0(2a) and higher. This includes both publisher and subscriber servers.

• If you have more than 500 devices on a single Cisco CallManager server, Cisco recommends more memory. This includes devices that would fail over to that Cisco CallManager server if a server or network experiences outage.

• Cisco CallManager running co-resident with the Cisco Carrier Routing System (CRS) or the Cisco IP Contact Center (IPCC) Express requires more than 1 GB of memory.

Table 2 outlines the minimum memory recommendations for Cisco CallManager publisher servers running Version 4.0 and later.

Table 2. Memory Requirements for Cisco CallManager Publisher Servers Running Version 4.0 and Later

Condition or Server

Cisco 7815 Media Convergence Server (MCS)

Cisco 7825 MCS

Cisco 7835 MCS

Base Subscriber Memory Requirements

1 GB

1 GB

1 GB

Subscriber with more than 500 devices

Not supported

2 GB

2 GB

Co-resident Cisco CallManager and Cisco CRS or IPCC Express

1.5 GB

2 GB recommended

2 GB

2 GB

Note: Earlier versions of the Cisco 7815 have a maximum memory capacity of 1.5 GB. These servers should continue to operate properly under the constraints within which they were designed to run.

MEMORY IN ORDERABLE CISCO MCSS

Table 3 outlines the current base memory in shipping Cisco MCSs.

Table 3. Base Memory for Cisco MCSs

Server Part Number

Base Memory

MCS-7815-I1-IPC1

1 GB

MCS-7815-I1-IPC1

2 GB

MCS-7815-I2-IPC1

2 GB

MCS-7825H-3.0-IPC1

1 GB

MCS-7825-H1-IPC1

2 GB

MCS-7825-H2-IPC1

2 GB

MCS-7825I-3.0-IPC1

1 GB

MCS-7825-I1-IPC1

2 GB

MCS-7825-I2-IPC1

2 GB

MCS-7835-H1-IPC1

2 GB

MCS-7835-I1-IPC1

2 GB

MCS-7845-H1-IPC1

4 GB

MCS-7845-I1-IPC1

4 GB

MEMORY UPGRADE

Refer to Tables 4 and 5 for part numbers for the new Cisco CallManager memory recommendations. The products should be ordered directly from HP or IBM, respectively.

Table 4. Memory for HP Servers*

Product ID

Compaq Model

Shipped Processor Speed

Total Memory Slots

Maximum Memory

Current Dual In-Line Memory Modules (DIMMs)

Desired Memory

Quantity

Memory Kit Part Number to Achieve Target

MCS-7825-800

DL320

800 MHz

4

2 GB

2 x 256 MB

2 GB

4

512 MB DIMMs Contact HP

MCS-7825-1133

DL320

1.133 GHz

4

2 GB

2 x 512 MB

2 GB

4

512 MB DIMMs Contact HP

MCS-7825H-2266

DL320-G2

2.266 GHz

4

4 GB

2 x 512 MB

2 GB

2

512 MB DIMMs Contact HP

MCS-7825H-3000

DL320-G2

3.06 GHz

4

4 GB

2 x 512 MB

2 GB

2

512 MB DIMMs Contact HP

MCS-7825-H1

DL320-G3

3.4 GHz

4

4 GB

2 x 1 GB

2 GB

-

-

MCS-7825-H2

DL320-G4

2.8 GHz

4

8 GB

2 x 1 GB

2 GB

-

-

MCS-7835

DL380

733 MHz

4

4 GB

2 x 256 MB

2 GB

4

512 MB DIMMs Contact HP

MCS-7835-1000

DL380

1 GHz

4

4 GB

2 x 512 MB

2 GB

2

512 MB DIMMs Contact HP

MCS-7835-1266

DL380 G2

1.266 GHz

6

6 GB

2 x 512 MB

2 GB

2

512 MB DIMMs Contact HP

MCS-7835H-2400

DL380-G3

2.4 GHz

6

6 GB

2 x 512 MB

2 GB

2

512 MB DIMMs Contact HP

MCS-7835H-3000

DL380-G3

3.06 GHz

6

6 GB

2 x 512 MB

2 GB

2

512 MB DIMMs Contact HP

MCS-7835-H1

DL380-G4

3.4 GHz

6

6 GB

2 x 1 GB

2 GB

-

-

MCS-7845H-2400

DL380-G3

2.4 GHz

6

6 GB

4 x 1 GB

4 GB

-

-

MCS-7845H-3000

DL380-G3

3.06 GHz

6

6 GB

4 x 1 GB

4 GB

-

-

MCS-7845-H1

DL380-G4

3.4 GHz

6

6 GB

4 x 1 GB

4 GB

-

-

Order from: http://welcome.hp.com/country/us/en/prodserv/options_supplies.html

Table 5. Memory for IBM Servers

Product ID

IBM Model

Shipped Processor Speed

Total Memory Slots

Maximum Memory

Current DIMMs

Desired Memory

Quantity

Memory Kit Part Number to Achieve Target

MCS-7815-1000

IBM x200

1 GHz

3

1.5 GB

2 x 256 MB

1.5 GB

3

512 MB DIMMs * Contact IBM

Requires removal of existing DIMMs

MCS-7815I-2000

IBM x205

2 GHz

2

2 GB

1 x 512 MB

2.0 GB

2

1 GB DIMMs* Contact IBM

Requires removal of existing DIMM

MCS-7815I-3000

IBM x206

3.06 GHz

4

4 GB

2 x 512 MB

1.5 GB

1

512 MB DIMM Contact IBM

MCS-7815-I1-IPC1

IBM x206

3.06 GHz

4

4 GB

2 x 512 MB

2 GB

2

512 MB DIMMs Contact IBM

MCS-7815-I1-IPC3

IBM x206

3.06 GHz

4

4 GB

2 x 1 GB

2 GB

-

-

MCS-7815-I2

IBM x206m

2.8 GHz

4

8 GB

2 x 1 GB

2 GB

-

-

MCS-7825I-3000

IBM x306

3.06 GHz

4

4 GB

2 x 512 MB

2 GB

2

512 MB DIMMs Contact IBM

MCS-7825-I1

IBM x306

3.4 GHz

4

4 GB

2 x 1 GB

2

-

-

MCS-7825-I2

IBM x306m

2.8 GHz

4

8 GB

2 x 1 GB

2

-

-

MCS-7835I-2400

IBM x345

2.4 GHz

4

8 GB

2 x 512 MB

2 GB

2

512 MB DIMMs

Contact IBM

MCS-7835I-3000

IBM x345

3.06 GHz

4

8 GB

2 x 512 MB

2 GB

2

512 MB DIMMs

Contact IBM

MCS-7835-I1

IBM x346

3.4 GHz

8

8 GB

2 x 1 GB

2 GB

-

-

MCS-7845-I1

IBM x346

3.4 GHz

8

8 GB

4 x 1GB

4 GB

-

-

*Order these parts from: http://www.ibm.com/shop/us/maintenanceparts