.. _multinode_cluster_hardware_specification:


Multinode Cluster Hardware Specification
----------------------------------------


Virtual machine requirements are specified in the table below.

.. tabularcolumns:: |p{1.5cm}|p{1.5cm}|p{2cm}|p{3cm}|p{2.5cm}|p{3.5cm}|p{1.5cm}|

+-----------+----------+---------------+------------------------------+---------------------+--------------------------------+------------------+
| Node type | Quantity | VM            | Memory                       | CPU                 | Disk                           | Network          |
+===========+==========+===============+==============================+=====================+================================+==================+
|           |          |               |                              |                     |                                |                  |
| Unified   | 4 or 6   | >= VMware 5.1 | 16 GB with 16 GB reservation | 4 vCPU @ 2 GHz      | 370 GB partitioned:            | 1 Gbit/s minimum |
|           |          |               |                              | with 4000 MHz       |                                |                  |
|           |          |               |                              | reservation         | * 20 GB for OS                 |                  |
|           |          |               |                              |                     | * 50 GB for application:       |                  |
|           |          |               |                              |                     |   10 GB for logs,              |                  |
|           |          |               |                              |                     |   40GB for our apps            |                  |
|           |          |               |                              |                     | * 50 GB for compressed backups |                  |
|           |          |               |                              |                     | * 250 GB for database          |                  |
|           |          |               |                              |                     |                                |                  |
+-----------+----------+---------------+------------------------------+---------------------+--------------------------------+------------------+
|           |          |               |                              |                     |                                |                  |
| WebProxy  | 2        | >= VMware 5.1 | 4 GB with 4 GB reservation   | 2 vCPU @ 2 GHz      | 70 GB partitioned:             | 1 Gbit/s minimum |
|           |          |               |                              | with no reservation |                                |                  |
|           |          |               |                              |                     | * 20 GB for OS                 |                  |
|           |          |               |                              |                     | * 50 GB for application        |                  |
|           |          |               |                              |                     |                                |                  |
+-----------+----------+---------------+------------------------------+---------------------+--------------------------------+------------------+


For Memory and CPU, the Resource Allocation Reservation on VMware is indicated in the table.
Hyperthreading is supported.

The OS disk requirement is fixed and logs are rotated to ensure that 10 GB is sufficient. 
40 GB for applications is a generous allocation and does not scale with the number of users. 

The Database storage partition is sized to support 250 K users. 
Database backups are compressed and the partition is sized to ensure that sufficient 
space available to support backup of 250 GB database.

The backup disk should be Thick Provisioned and Eager Zeroed for better performance immediately after installation.

Web Proxies are optional, but if Web Proxies are used, then they form part of the cluster to allow sharing of 
static data and other content as needed (for example, themes). 

To set up the disk requirements, the disk should be set up on the VMware GUI Resources tab where a disk can be created.
This task should be done after the OVA import but prior to the boot of the system.

.. |Operations Guide| replace:: Operations Guide
.. |VOSS-4-UC| replace:: VOSS-4-UC
.. |Unified CM| replace:: Unified CM