WebEx System Requirements
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WebEx System Requirements

WebEx System Requirements

This section provides an overview of hardware, CPU and memory, network, and storage requirements for Cisco WebEx Meetings Server.

General System Requirements

Cisco WebEx Meetings Server (CWMS) is compatible with Cisco UCS servers that meet or exceed the specifications presented in this section.


Note


The table suggests that you deploy your internal storage in a RAID configuration. For information, see Installing VMware vSphere ESXi and Configuring Storage in the Cisco WebEx Meetings Server Planning Guide.
Important:

When you perform an upgrade to a major release of Cisco WebEx Meeting Server, such as to Release 2.0 or Release 2.5 from Release 1.x, the ESXi hosts (Cisco UCS server) where the Admin virtual machine is located require a minimum of 1.5 TB of free disk space. Refer to the section in this document that describes the different size user systems, which begins with the 50-user System. During an upgrade, there are two sets of virtual machines on your network at the same time; the original virtual machines running Release 1.x and the upgrade virtual machines to support the new release. For more details, see the "Upgrading the System" section in the CWMS Administration Guide at http:/​/​www.cisco.com/​en/​US/​products/​ps12732/​prod_​installation_​guides_​list.html.

Module

Requirements Notes

Host server and processors

  • Cisco UCS C-series rack server or equivalent B-series blade server.
  • AES-NI instruction set support.
  • 2.4 GHz or faster processor clock speed.

Network interfaces

The NICs between the ESXi hosts (for the Cisco WebEx Meetings Server virtual machines) and the Ethernet switch (not to the external network interface).

  • Minimum 1 physical NIC for a non-redundant configuration. See the 50-user System section for special requirements where the Internet Reverse Proxy (IRP) and Admin virtual machine are sharing a host.
  • Redundant configurations must have all NIC interfaces duplicated (teamed or bonded) and connected to an independent switching fabric.
  • An additional NIC for the VMware management network (optional).

Internal (DAS) Storage for ESXi hosts where internal virtual machines are deployed

  • Minimum of 4 drives in a RAID-10 or RAID-5 configuration

  • Minimum of 1.5 TB usable storage for new system deployments or upgrades.

  • When you upgrade to Cisco WebEx Meetings Server Release 2.0 or Release 2.5 from Release 1.x, the ESXi hosts each require from 172 GB to 1118 GB free disk space depending on the size of your system and the virtual machines. Refer to the section in this document that describes the different size user systems, which begins with the 50-user System.

  • Optional second array for ESXi

Note   

The virtual machines must use thick provisioning for storage. (Citrix thin clients are not supported.)

Internal (DAS) storage for ESXi hosts where IRP virtual machines are deployed

  • Minimum of 2 drives in a RAID-1 configuration

  • Minimum of 300 GB usable storage

  • Can use the same configurations as for the internal virtual machines

Note   

The virtual machines must use thick provisioning for storage. (Citrix thin clients are not supported.)

SAN storage

  • Can be used as a substitute for DAS. (We recommend allocating of the same amount of storage space.)
  • B-series blade servers have only two hard disk drives. If you are using Cisco UCS B-series blade servers and you plan to upgrade to Cisco WebEx Meetings Server Release 2.0 or Release 2.5, you must use SAN storage to meet the 4 hard disk drives in either a RAID 5 or RAID 10 configuration requirement.
  • Recommended only for deployments where the support staff has experience monitoring and tuning SAN performance.
    Note   

    You take responsibility for adding storage for new VMware requirements and future growth of the system.

  • Fiber Channel (FC) or Fiber Channel over 10 Gb Ethernet (FCoE) only.
  • Performance requirements are the same as for DAS.

  • Maximum permissible total latency, as measured by vSphere, is 20 ms. For further information, see the Storage section at http:/​/​docwiki.cisco.com/​wiki/​UC_​Virtualization_​Supported_​Hardware#Storage.

  • Total space required for virtual machines: The sum of the storage resources reserved for each virtual machine of the CWMS system.

    Note   

    The virtual machines must use thick provisioning for storage. (Citrix thin clients are not supported.)

NAS storage

  • Can be used as a substitute for DAS or SAN. (We recommend the allocation of the same amount of storage space.)
  • We recommend using NAS storage servers with Cisco UCS C-series rack servers.
  • Recommended only for deployments where the support staff has experience monitoring and tuning NAS performance.

    You take responsibility for adding additional storage for new VMware requirements and future growth of the system.

  • Fiber Channel (FC) , Network File System (NFS), or SCSI only. For further information, see http:/​/​docwiki.cisco.com/​wiki/​UC_​Virtualization_​Storage_​System_​Design_​Requirements#General_​Guidelines_​for_​SAN.2FNAS.
  • Performance requirements are the same as for DAS.
  • Maximum permissible total latency, as measured by vSphere, is 20 ms. For further information, see http:/​/​docwiki.cisco.com/​wiki/​UC_​Virtualization_​Supported_​Hardware#Storage.
  • Total space required for virtual machines: The sum of the storage resources reserved for each virtual machine of the CWMS system.
  • File server must support vStorage APIs for Array Integration (VAAI) and use thick provisioning.
    Note   

    Although the default provisioning scheme for NAS storage is thin provisioning, the virtual machines must use thick provisioning for storage. (Citrix thin clients are not supported.) To enable thick provisioning for deployment with NAS storage, the storage-vendor-provided plug-in for VAAI must be installed on all the UCS servers used in the Cisco WebEx Meetings Server deployment.

Hypervisor

ESXi versions and vSphere licenses are described in the Minimum Hardware Requirements section.

  • One VMware license per processor socket.

  • vCenter Server 5.0, 5.0 Update 1, 5.0 Update 2, 5.1, 5.1 Update 1
    Note   

    For security reasons, 5.1 must be version 1900470 or later.

  • vCenter can be co-resident with Cisco WebEx Meetings Server, providing the processor and memory requirements are added to the system requirements.

    vCenter co-resident configurations are supported for 50-user and 250-user systems only.

  • Co-residency with Cisco Unified Communications products on the same physical ESXi host is not supported.
  • Co-residency with non-Cisco WebEx Meetings Server virtual machines on the same physical ESXi host is not supported.

Email server

Licenses

Host license—Each user that shall host a meeting must have a Host license to start a WebEx Web, WebEx Audio, or Personal Conferencing. For more information on Host licenses, see About Host Licenses.

WebEx Productivity Tools

WebEx Productivity Tools allow users to start, schedule, or join WebEx Meetings sessions from within applications, such as Microsoft® Outlook®. Users can find more information on Cisco WebEx Productivity Tools at http:/​/​www.webex.com/​support/​productivity-tools.html.

Cisco WebEx Meetings Server supports the latest version of WebEx applications, available on the Settings > Downloads page. If users are running an older version of WebEx Productivity Tools after you perform a system upgrade, they can schedule, start, and join meetings, but the latest features are not available. We recommend that you silently push the latest WebEx Productivity Tools .msi for an optimal experience. (See Cisco WebEx Meetings Application and Productivity Tools Compatibility Matrix.)

Minimum Hardware Requirements

This section lists some of the Cisco UCS servers you can use for each size system. For specific requirements for each system, refer to:

See also the "Cisco WebEx Meetings Server Ordering Guide" at http:/​/​www.cisco.com/​c/​en/​us/​products/​conferencing/​webex-meetings-server/​sales-resources-listing.html.

Table 1 ESXi Versions and License Types

System Size

ESXi Version

vSphere License Type

50 or 250

5.0, 5.0 Update 1, 5.1, or 5.5

Standard Edition, Enterprise Edition, Enterprise Plus Edition

800 or 2000

5.0 or 5.0 Update 1

Enterprise Plus Edition Only

5.1 or higher

Enterprise Edition, Enterprise Plus Edition

5.5 or higher

Standard Edition, Enterprise Edition, Enterprise Plus Edition

Table 2  Host Models

Deployment Size

Example of UCS Model

50 Users

  • UCS C220 M3

  • UCS B200 M3

250 Users

  • UCS C220 M3

  • UCS B200 M3

800 Users

  • UCS C460 M2

  • UCS B440 M2

  • UCS B420 M3

2000 Users

  • UCS C460 M2

  • UCS B440 M2

  • UCS B420 M3

Co-residency with vCenter is supported with 50- and 250-user system deployments only. Co-residency with Cisco Unified Communications products on the same physical host is not supported.

You can use older models of the UCS hardware with your system, but for a better user experience use the hardware listed in the table. For example, you can use the UCS C220 M3 for a 250-user system if you already have that hardware available.

When upgrading to Cisco WebEx Meetings Server Release 2.0, it is possible to use Cisco UCS B200 M3 blade servers with 2x local hard drives as long as the upgraded system uses SAN storage for its virtual machines. Using SAN storage with B-series blade servers allows your system to meet the 4 hard disk drives in a RAID 5 or RAID 10 configuration requirement for Cisco WebEx Meetings Server Release 2.0.


Note


For 800-user and 2000-user systems, we do not recommend deploying additional virtual machines on a DMZ host. This can result in increased packet loss and noticeable latency on media connections.



Note


The UCS C460 M2 server does not have a battery backup unit (BBU). Set the write cache policies to write through. See the "Setting the Write Cache on a RAID Controller" section in Installing VMware vSphere ESXi and Configuring Storage for more information.


Resources Consumed by Cisco WebEx Meetings Server and the ESXi Host

Cisco WebEx Meetings Server is deployed on one or more virtual machines on ESXi hosts. CPU and memory resources, and storage space, is consumed by Cisco WebEx Meetings Server and by ESXi (VMware component that enables virtualization on the physical Cisco UCS Server). Depending on your system size, vCenter and multiple virtual machines might run on the same Cisco UCS server.

Cisco WebEx Meetings Server uses resource reservation for its virtual machines to guarantee system scalability. Other VMware workloads do not take CPU and other resources away from the virtual machines. The minimum requirements for each system size includes enough resources to support:

  • Continued quality of service for Cisco WebEx Meeting Server at peak system usage (maximum capacity).

  • VMware ESXi.

  • VMware vCenter (when co-resident).

    For the requirements for vCenter Server, see Knowledge Base and search for "Installing vCenter Server 5.0 best practices," or "Installing vCenter Server 5.1 best practices" respectively.

  • VMware snapshots of the virtual machine (delete these as soon as possible otherwise you may experience severe performance degradation).

    Extra disk space is required for snapshots, as some snapshots may be as large as the original virtual machine. In some cases, vSphere may delete snapshots to create storage space, compromising the ability to roll back to previous snapshots.

  • Use of the Cisco UCS Server over the typical life cycle of the server.

The hardware requirements specified in the OVA file are the minimum requirements that are needed to deploy Cisco WebEx Meetings Server. These requirements do not include any CPU, memory, or storage requirements for VMware vCenter or ESXi.

Important:

The requirements for the Cisco UCS Servers include requirements for Cisco WebEx Meetings Server 2.x, VMware ESXi 5.1, and 5.0, and vCenter 5.1, and 5.0 (in supported co-residency configurations).


Caution


Co-residency, other than the configurations listed in the tables in this document, is not supported. If you disregard our system requirements, your virtual machines might not boot. The deployment of the virtual machines can stall from within the earliest product screens during the vCenter OVA deployment.


50-user System

A 50-user system is also described as a micro system. The diagram illustrates two versions of a 50-user deployment. (The "Redundant" virtual machines demonstrate support for High Availability (HA).)

The table lists the minimum hardware requirements for the ESXi hosts (Cisco UCS servers) in your system. The last two columns show the amount of disk space needed for new installations of Cisco WebEx Meetings Server, and the free disk space needed when you use Automatic Upgrade to upgrade Cisco WebEx Meetings Server Release 1.X to Release 2.X by using your existing Cisco UCS servers. For more information, see General System Requirements.

For information about the bandwidth requirements, see Network Bandwidth Requirements.


Note


For IOPS information, see Advantages of Deploying a System on VMware vSphere.


Co-residency with vCenter is supported with a 50-user system deployment as configured in the following table.

Virtual Machines on ESXi Host (Cisco UCS Server)

CPU Cores

Memory (GB)

Ethernet Ports

Hard Drive Storage Requirement for New Installs

Free Hard Drive Storage Required for Automatic Upgrade to 2.X from 1.X1

Admin

4 (ESXi 5.0)

6 ( ESXi 5.1 and above)

24

2 for the Admin virtual machine, including 1 if NIC teaming is used for redundancy

1 recommended for ESXi management network

1.5 TB; minimum of 7,200 RPM

1118 GB for an automatic installation.

Admin and vCenter (co-resident)

6 (ESXi 5.0)

8 ( ESXi 5.1 and above)

36

2 for the Admin virtual machine, including 1 if NIC teaming is used for redundancy

1 for vCenter

1 recommended for ESXi management network

1.5 TB; minimum of 7,200 RPM

1078 GB

This figure is based on the assumption that you have set up vCenter with 40 GB.

Internet Reverse Proxy (IRP)

4 (ESXi 5.0)

6 ( ESXi 5.1 and above)

12

2 for the IRP virtual machine, including 1 if NIC teaming is used for redundancy

1 recommended for ESXi management network

300 GB; minimum of 7,200 RPM

172 GB

Admin and IRP (co-resident)

8

36

2 for the Admin virtual machine, including 1 if NIC teaming is used for redundancy

2 for IRP virtual machine, including 1 if NIC teaming is used for redundancy

1 recommended for ESXi management network

1.5 TB; minimum of 7,200 RPM

990 GB

Admin and IRP and vCenter (all co-resident)

12

40

2 for the Admin virtual machine, including 1 if NIC teaming is used for redundancy

2 for IRP virtual machine, including 1 if NIC teaming is used for redundancy

1 for vCenter

1 recommended for ESXi management network

1.5 TB; minimum of 7,200 RPM

950 GB

This figure is based on the assumption that you have set up vCenter with 40 GB.

1 If you choose Manual Upgrade where you manually deploy all the virtual machines and you are using the same hardware, you are required to have twice the free space as is required for Automatic Upgrade.

Note


If you plan to use a High Availability (HA) system, double the hardware requirements and quantities of the primary system to support both systems.


Resources Reserved by the Virtual Machines in a 50-user System

This section describes how much media the virtual machines use and is intended for those with expert knowledge of VMware. CPU resources are specified as vCPUs (cores) and MHz (CPU cycles). The VMware VMkernel uses MHz cycles to control CPU scheduling.

Memory resources are specified by maximum memory and reserved memory. Reserved memory is not shared with other virtual machines on the same physical Cisco UCS Server.

Disk resources (storage) are controlled in two separate areas. During the OVA build, the CentOS file system partition sizes determine the minimum disk size. Secondly, vCenter controls the maximum disk space available.

If you attempt to deploy a virtual machine without the minimum number of vCPUs, the OVA deployment of the virtual machine will fail. If you attempt to deploy a virtual machine without the minimum total MHz processor speed, then the virtual machine will not power on.

Important:

The numbers in this table do not include resources for VMware ESXi or vCenter. See Resources Consumed by Cisco WebEx Meetings Server and the ESXi Host.

Virtual Machine Type Virtual CPU (vCPU) CPU2 (MHz) Reserved Memory/Total Memory3 (GB) Disks (GB)

Admin

4

8000

12/14

418

Internet Reverse Proxy

4

8000

4/4

128

2 Number obtained by multiplying the number of physical CPUs with the speed of the CPU chip (MHz). Hyperthreading is not included in this calculation. (The physical CPU must have a clock speed of 2.4 GHz or faster.)
3 Virtual machines with media functionality have additional, non-reserved memory; Memory = Reserved/Total

250-user System

A 250-user system is also described as a small system. This is a schematic diagram illustrates two versions of a 250-user deployment. The "Redundant" virtual machines demonstrate support for High Availability (HA). If your system does not include HA support, then only deploy the Primary system.

The table lists the minimum hardware requirements for the ESXi hosts (Cisco UCS servers) in your system. The last two columns show the amount of disk space needed for new installations of Cisco WebEx Meetings Server, and the free disk space needed when you use Automatic Upgrade to upgrade Cisco WebEx Meetings Server Release 1.X to Release 2.X by using your existing Cisco UCS servers. For more information, see General System Requirements.

For information about the bandwidth requirements, see the Network Bandwidth Requirements.

For IOPS information, see Advantages of Deploying a System on VMware vSphere.

Co-residency with vCenter is supported with a 250 user system deployment as configured in the following table.

Virtual Machines on ESXi Host (Cisco UCS Server)

CPU Cores

Memory (GB)

Ethernet Ports

Hard Drive Storage Requirement for New Installs

Free Hard Drive Storage Required for Automatic Upgrade to 2.X from 1.X 4

Admin and Media 12 52
  • 2 for Admin and Media, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

1.5 TB; minimum of 7200 RPM

990 GB

(Admin and Media) and vCenter (co-resident) 16 56
  • 2 for Admin and Media, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

  • 1 for vCenter

1.5 TB; minimum of 7200 RPM

950 GB

Note   

This figure is based on the assumption that you have set up vCenter with 40 GB.

Internet Reverse Proxy (IRP) 12 36
  • 2 for IRP, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

300 GB; minimum of 7200 RPM

172 GB

4 If you choose Manual Upgrade where you manually deploy all the virtual machines and you are using the same hardware, you are required to have twice the free space as is required for Automatic Upgrade.

Note


If you plan to use a HA system, purchase the same hardware and quantities for the HA system as you did for the primary system.


Resources Reserved by the Virtual Machines in a 250-user System

This section describes how much media the virtual machines use and is intended for those with expert knowledge of VMware. CPU resources are specified as vCPUs (cores) and MHz (CPU cycles). The VMware VMkernel uses MHz cycles to control CPU scheduling.

Memory resources are specified by maximum memory and reserved memory. Reserved memory is not shared with other virtual machines on the same physical Cisco UCS Server.

Disk resources (storage) are controlled in two separate areas. During the OVA build, the CentOS file system partition sizes determine the minimum disk size. Secondly, vCenter controls the maximum disk space available.

If you attempt to deploy a virtual machine without the minimum number of vCPUs, the OVA deployment of the virtual machine will fail. If you attempt to deploy a virtual machine without the minimum total MHz processor speed, then the virtual machine will not power on.

Important:

The numbers in this table do not include resources for VMware ESXi or vCenter. See Resources Consumed by Cisco WebEx Meetings Server and the ESXi Host.

Virtual Machine Type Virtual CPU (vCPU) CPU5 (MHz) Reserved Memory/Total Memory6 (GB) Disks (GB)

Admin

4

8000

16/16

418

Media

8

16,480

13/23

128

Internet Reverse Proxy

8

16,480

6/6

128

5 Number obtained by multiplying the number of physical CPUs with the speed of the CPU chip (MHz). Hyperthreading is not included in this calculation. (The physical CPU must have a clock speed of 2.4 GHz or faster.)
6 Virtual machines with media functionality have additional, non-reserved memory; Memory = Reserved/Total

800-user System

An 800-user system is also described as a medium system. This diagram illustrates two versions of an 800-user deployment. The "Redundant" virtual machines demonstrate support for High Availability (HA).

The table lists the minimum hardware requirements for the ESXi hosts (Cisco UCS servers) in your system. The last two columns show the amount of disk space needed for new installations of Cisco WebEx Meetings Server, and the free disk space needed when you use Automatic Upgrade to upgrade Cisco WebEx Meetings Server Release 1.X to Release 2.X by using your existing Cisco UCS servers. For more information, see General System Requirements.

For more information about the bandwidth requirements, see Network Bandwidth Requirements.


Note


Co-residency with vCenter is not supported with an 800-user system deployment.

For IOPS information, see Advantages of Deploying a System on VMware vSphere.


Virtual Machines on ESXi Host (Cisco UCS Server)

CPU Cores

Memory (GB)

Ethernet Ports

Hard Drive Storage Requirement for New Installs

Free Hard Drive Storage Required for Automatic Upgrade to 2.X from 1.X 7

Admin and Media (combined) 40 80
  • 2 for Admin and Media, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

1.5 TB; minimum of 10,000 RPM

990 GB

Internet Reverse Proxy (IRP) 40 36
  • 2 for IRP, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

300 GB; minimum of 10,000 RPM

172 GB

7 If you choose Manual Upgrade where you manually deploy all the virtual machines and you are using the same hardware, you are required to have twice the free space as is required for Automatic Upgrade.

Note


If you plan to use an HA system, purchase the same hardware requirements and quantities as the primary system.



Note


For 800 user systems, we do not recommend deploying additional virtual machines on a DMZ host. This may result in increased packet loss and noticeable latency on media connections.


Resources Reserved by the Virtual Machines in a 800-user System

This section illustrates how much media the virtual machines use and is intended for those with expert knowledge of VMware. CPU resources are specified as vCPUs (cores) and MHz (CPU cycles). The VMware VMkernel uses MHz cycles to control CPU scheduling.

Memory resources are specified by maximum memory and reserved memory. Reserved memory is not shared with other virtual machines on the same physical Cisco UCS Server.

Disk resources (storage) are controlled in two separate areas. During the OVA build, the CentOS filesystem partition sizes determine the minimum disk size. Secondly, vCenter controls the maximum disk space available.

If you attempt to deploy a virtual machine without the minimum number of vCPUs, the OVA deployment of the virtual machine will fail. If you attempt to deploy a virtual machine without the minimum total MHz processor speed, then the virtual machine will not power on.

Important:

The numbers in this table do not include resources for VMware ESXi. See Resources Consumed by Cisco WebEx Meetings Server and the ESXi Host.

Virtual Machine Type Virtual CPU (vCPU) CPU8 (MHz) Reserved Memory/Total Memory9 (GB) Disks (GB)

Admin

10

20,600

16/16

418

Media

30

60,800

14/44

128

Internet Reverse Proxy

20

41,200

10/10

128

8 Number obtained by multiplying the number of physical CPUs with the speed of the CPU chip (MHz). Hyperthreading is not included in this calculation. (The physical CPU must have a clock speed of 2.4 GHz or faster.)
9 Virtual machines with media functionality have additional, non-reserved memory; Memory = Reserved/Total

2000-user System

A 2000-user system is also described as a large system. This diagram shows a 2000-user system with High Availability (HA) and Internet Reverse Proxy (IRP) support. The HA virtual machines are shown as the Redundant virtual machines. If your system does not include HA support, then only deploy the Primary system.

Important:

We recommend that you deploy the all virtual machines shown in the diagram. By deploying different types of virtual machines on a physical server, you can better avoid a system shutdown in case of a hardware failure. For example, placing a Media and a Web virtual machines on a single physical server is more resilient than if you place both Web virtual machines on the same physical server.

The table lists the minimum hardware requirements for the ESXi hosts (Cisco UCS servers) in your system. The last two columns show the amount of disk space needed for new installations of Cisco WebEx Meetings Server, and the free disk space needed when you use Automatic Upgrade to upgrade Cisco WebEx Meetings Server Release 1.X to Release 2.X by using your existing Cisco UCS servers. For more information, see General System Requirements.

For more information about the bandwidth requirements, see Network Bandwidth Requirements.

If you plan to add a HA system, those virtual machines are shown as the "redundant" virtual machines. If you do not want HA, then only deploy the primary system.


Note


Co-residency with vCenter is not supported with a 2000-user system deployment.



Note


For IOPS information, see Advantages of Deploying a System on VMware vSphere.


Virtual Machines on ESXi Host (Cisco UCS Server)

CPU Cores

Memory (GB)

Ethernet Ports

Hard Drive Storage Requirement for New Installs

Free Hard Drive Storage Required for Automatic Upgrade to 2.X from 1.X 10

Media1 and Admin (combined)

40 80
  • 2 for Media1 and Admin, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

1.5 TB; minimum of 10,000 RPM

990 GB

Media2 and Web1 (combined) 40 80
  • 2 for Media2 and Web1, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

1 TB; minimum of 10,000 RPM

768 GB

Media3 and Web2 (combined) 40 80
  • 2 for Media3 and Web2, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

1 TB; minimum of 10,000 RPM

768 GB

Internet Reverse Proxy (IRP) 40 36
  • 2 for IRP, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

300 GB; minimum of 10,000 RPM

172 GB

Media and Admin (combined) for HA 40 80
  • 2 for Media and Admin, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

1.5 TB; minimum of 10,000 RPM

990 GB

Web for HA 40 80
  • 2 for Web, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

1 TB; minimum of 10,000 RPM

896 GB

IRP for HA 40 36
  • 2 for IRP, including 1 if NIC teaming is used for redundancy

  • 1 recommended for ESXi management network

300 GB; minimum of 10,000 RPM

172 GB

10 If you choose Manual Upgrade where you manually deploy all the virtual machines and you are using the same hardware, you are required to have twice the free space as is required for Automatic Upgrade.

Note


For 2000 user systems, we do not recommend deploying additional virtual machines on a DMZ host. This might result in increased packet loss and noticeable latency on media connections.


Resources Reserved by the Virtual Machines in a 2000-user System

This section illustrates how much media the virtual machines use and is intended for those with expert knowledge of VMware. CPU resources are specified as vCPUs (cores) and MHz (CPU cycles). The VMware VMkernel uses MHz cycles to control CPU scheduling.

Memory resources are specified by maximum memory and reserved memory. Reserved memory is not shared with other virtual machines on the same physical Cisco UCS Server.

Disk resources (storage) are controlled in two separate areas. During the OVA build, the CentOS file system partition sizes determine the minimum disk size. Secondly, vCenter controls the maximum disk space available.

If you attempt to deploy a virtual machine without the minimum number of vCPUs, the OVA deployment of the virtual machine will fail. If you attempt to deploy a virtual machine without the minimum total MHz processor speed, then the virtual machine will not power on.

Important:

The numbers in this table do not include resources for VMware ESXi. See Resources Consumed by Cisco WebEx Meetings Server and the ESXi Host.

Virtual Machine Type Virtual CPU (vCPU) CPU11 (MHz) Reserved Memory/Total Memory12 (GB) Disks (GB)

Admin

10

20,600

16/16

418

Media

30

60,800

14/44

128

Web

10

20,600

16/16

128

Internet Reverse Proxy

20

41,200

10/10

128

11 Number obtained by multiplying the number of physical CPUs with the speed of the CPU chip (MHz). Hyperthreading is not included in this calculation. (The physical CPU must have a clock speed of 2.4 GHz or faster.)
12 Virtual machines with media functionality have additional, non-reserved memory; Memory = Reserved/Total

System Capacity Matrix

Key Points:
  • One of the basic assumptions for the information presented in this section is that there are at least two people participating in a meeting.

  • Concurrent meeting connections is defined as the number of people participating in a meeting at any given time. For example, for a 50 user system, the maximum concurrent meeting connections can be comprised of five concurrent meetings that each have a total of 10 people in the meeting (for example, one host and nine participants).

  • After the maximum number of meeting participants is reached for any point in time, the system does not allow other users to start or join meetings. Of those maximum number of meeting participants (2000, 800, 250 or 50 people), only half of the participants can use video. Video is defined as sending or receiving, meaning users might be using their WebEx webcam video or the video file share option which allows users to share a video.

  • Desktop sharing is not considered video. This means with a 250 user system, 250 people can be sharing their desktops during meetings at any given time.

  • The addition of High Availability does not increase the capacity of the system to hold meetings; an 800-user system is still an 800-user system.

The numbers in the table below represent the design capacity for the Cisco WebEx Meetings Server system. Operating the system at a capacity higher than these specifications can result in a degraded user experience and may result in system instability. Cisco reserves the right to enforce capacity limits at these levels.

Table 3 System Capacity Matrix

System Capacity

2000 user system

800 user system

250 user system

50 user system

Notes

Maximum Concurrent Meeting Connections (Audio, Video, and Web users)

2000

800

250

50

The number of people participating in concurrent meetings at any given time.

Maximum Simultaneous Audio Connections (Teleconference Phone Calls and Voice Connection Using Computer From Meeting Clients)

2000

800

250

50

The system capacity remains the same as shown on the left, regardless of what combination of the following features are used:
  • G.711, G.722, G.729 audio codecs

  • IPv4 or IPv6 teleconferencing

  • TLS/SRTP audio encryption

Maximum Concurrent Video and Video File Sharing Users

1000

400

125

25

These numbers show the maximum number of concurrent meeting connections (or participants) allowed to use video sharing at the same time. When the number of users with video sharing in concurrent meetings reaches this limit, then the remaining users invited to the concurrent meetings can join the meetings, but their video windows are grayed out.

Note   

If one participant in a meeting uses video, then all other users in the same meeting are counted as video users, even if they are not using video themselves.

Note   

Desktop sharing is not considered video.

Maximum Participants in One Meeting for Non-HA Deployments

100

100

100

50

These numbers show the maximum number of participants who can attend a meeting.

Maximum Participants in One Meeting for HA Deployments

250

250

100

50

These numbers show the maximum number of participants who can attend a meeting.

Maximum Meetings That Can be Recorded Simultaneously

100

40

13

3

This is the total number of meetings that can use the Recording feature at one time.

Maximum Concurrent Recording Playback Sessions

500

200

63

12

This is the total number of recording playback sessions that can occur simultaneously. This refers to recordings that are saved on your storage system and does not include recordings that are downloaded to users' desktops.

Note   

These playback sessions are not included in the concurrent meeting connections on the system.

Maximum Number of User Profiles

400,000

400,000

400,000

400,000

This number includes active and deactivated users.

Maximum Concurrent Meetings

1000

400

125

25

The number of separate meetings that can be active concurrently.

Maximum Call Rate (calls/per second)

20

8

3

1

This is the average number of users who can dial into a meeting during a one second time period. After the system reaches this number, the next few users to dial into the meeting might experience an additional few seconds wait before connecting to the meeting.

Maximum Concurrent Sign-in

20 people per second

8 people per second

3 people per second

1 person per second

This is the average number of users who can simultaneously sign in to your WebEx site during a one second time period. After the system reaches this number, the next few users to sign in to the WebEx site might experience an additional few seconds wait before they can join a meeting.

Maximum Aggregate Bandwidth Utilization

5 Gbps

2 Gbps

625 Mbps

125 Mbps

Using our test system at its maximum bandwidth, this is the maximum bandwidth the test system could handle. For more information about bandwidth utilization see the Network Bandwidth Requirements section in the Networking Topology for Your System chapter of the Planning Guide. You can also refer to the WebEx Network Bandwidth White Paper.


Note


For new installations of Cisco WebEx Meetings Server Release 2.0 and higher, the storage requirements are:
  • Disk space can be local (DAS) or external (SAN or NAS).

  • ESXi hosts (Cisco UCS server) with the Admin virtual machine require 1.5 TB of disk space.

  • ESXi hosts (Cisco UCS server) without an Admin virtual machine require 1 TB of disk space.

  • When upgrading Cisco WebEx Meetings Server by using existing Cisco UCS servers, the ESXi hosts requires 1118 GB of free disk space if the UCS server has only the Admin virtual machine (primary or HA system) or 990 GB of free disk space if the UCS server has one Admin and one Media virtual machine (primary or HA system).

For complete details, see the Resources Consumed by Cisco WebEx Meetings Server and the ESXi Host section in the http:/​/​www.cisco.com/​c/​en/​us/​support/​conferencing/​webex-meetings-server/​products-installation-and-configuration-guides-list.html.