In an on-premise deployment of Presence Services, each Presence Server in the Presence Services cluster can contribute to the attachment store. The storage size of each contribution can be different. Presence Services stores two copies of each multimedia attachment file on different nodes in the cluster to support redundancy in case of a hardware failure.
For large deployments supporting up to the maximum number of users, a large amount of storage is required. Usage estimates based on 40 instant messages per user per day, and 5% of those having attachments, would be approximately 50 TB of storage per cluster. For these large deployments, a SAN can be used.
Consider the following for storing multimedia attachment files:
Which SAN and how many SANs to deploy.
Size of the virtual hard disks that can be attached to the Avaya Breeze® platform cluster node based on the usage.
Which Avaya Breeze® platform cluster node will host the virtual hard disks.
Note:
Avaya recommends that you configure at least two cluster nodes with the virtual hard disks for load sharing and redundancy.
