Performance capabilities
The performance capabilities of VCS X8.1 software running on Large VM server deployments and standard
VCS appliances are summarized below. In all cases, note that:
n You can cluster up to 6 VCSs to increase capacity by a maximum factor of 4.
n Logging is at default levels.
n Performance capacity will be reduced by features such as presence, provisioning, TURN relay services,
and by configuring large numbers of zones and search rules.
n VM hardware requires a minimum of 6GB RAM.
Large VM servers (minimum 8 cores with 2 x 10Gb NIC)
Supports the following set of concurrent calls and registrations:
n 500 encrypted traversal calls @ 768kbps or 1000 encrypted SIP audio traversal calls @ 64kbps; and
n 500 non-traversal calls; and
n 5000 registrations
This assumes a maximum sustained call rate of 10 calls per second.
VCS appliances (or equivalent VM server with 2 cores and 1Gb NIC)
Supports the following set of concurrent calls and registrations:
n 100 encrypted traversal calls @ 768kbps; and
n 500 non-traversal calls; and
n 2500 registrations
This assumes a maximum sustained call rate of 5 calls per second.
Cisco VCS Administrator Guide (X8.1.1) Page 356 of 507
Reference material
Performance capabilities
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