Storage System Performance Specifications

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The following are graphs which illustrate IOPS under various conditions for Unified Communications applications. This area is under construction. Check back frequently for updates.

Contents

Unified Communications Manager

This section provides the IOPS data for a Cisco Unified Communications Manager system under load.

Note Note: Sending CDR/CMR to the billing server does not incur any IOPS spikes, but enabling CDR Analysis and Reporting (CAR) continuous loading results in around 300 IOPS average on the system.

As a reference, the following steady state IOPS were observed for the loads (expressed in Busy Hour Call Attempts) indicated:

  • 10K BHCA produces ~ 35 IOPS
  • 25K BHCA produces ~ 50 IOPS
  • 50K BHCA produces ~ 100 IOPS
  • 100K BHCA produces ~ 150 IOPS
Note Note: The Unified Communications Manager data is based on ~93-98% sequential writes.
  • Software upgrades generate 800 to 1200 IOPS in addition to steady state IOPS.
  • CAR-scheduled uploads is 250 IOPS.
  • Trace collection is 100 IOPS.
  • Nightly backup is 50 IOPS.

Cisco Unity Connection

Summary of IOPS for Unity Connection

IOPS Type 1vCPU 2vCPU 4vCPU 7vCPU
Avg Total 78.66 129.01 217.89 201.73
Peak Total 760.99 714.06 867.88 773.70
Avg Read 5.90 19.60 45.67 9.53
Peak Read 601.84 469.46 693.21 526.22
Avg Write 72.77 109.40 172.22 192.20
Peak Write 247.14 293.51 371.97 413.50

Contact Center

Contact Center Enterprise

The SAN must be able to handle the following Unified CCE application disk I/O characteristics.


Unified CCE Component IOPS Disk Read KBytes / sec Disk Write KBytes / sec Operating Conditions
Peak Avg. 95th Pct. Peak Avg. 95th Pct. Peak Avg. 95th Pct.


Router 20 8 10 520 30 180 400 60 150 8,000 agents; 60 cps; ECC: 5 scalars @ 35 bytes each; No reporting.
Logger 1,000 600 700 4,000 600 2,500 12,000 3,000 7,000
HDS 1,600 1,000 1,100 600 70 400 6,000 2,000 3,800
Agent PG 125 40 70 300 5 20 2,000 1,200 1,500 2,000 agents, 15 cps


HDS 3,900 2,500 3,800 75,000 30,000 50,000 9,500 2,200 5,800 8,000 agents; 60 cps; 200 reporting users at max query load; ECC: 5 scalars @ 35 bytes each.
ROGGER 610 360 425 2,700 400 1,600 7,500 2,150 4,300 4,000 agents; 30 cps; ECC: 5 scalars @ 35 bytes each

Contact Center Express/IPIVR IOPS

The following table lists the IOPS numbers for Unified Contact Center Express/IPIVR.

IOPS Type 2vCPU
IOPS Avg per VM 150
IOPS Max spike per VM 1500

Back to: Unified Communications in a Virtualized Environment

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