Storage System Performance Specifications

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This page illustrates 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.

These values are per active VM OVA. Which VM OVAs are active, and how many are active simultaneously, depends on how the CUCM cluster is setup (see www.cisco.com/go/ucsrnd for details).

Active Call processing nodes: As a reference, the following steady state IOPS were observed at various loads (expressed in Busy Hour Call Attempts):

  • 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 during business hours generate 800 to 1200 IOPS in addition to steady state IOPS.
  • CDR/CMR via CDR Analysis and Reporting (CAR)
    • CUCM sending CDR/CMR to the external billing server does not incur any additional IOPS.
    • Enabling CAR continuous loading results in around 300 IOPS average on the system.
    • Scheduled uploads are around 250 IOPS for Publisher's VM only.
  • Trace collection is 100 IOPS (occurs on all VMs for which tracing is enabled).
  • Nightly backup (usually Publisher's VM only) 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

Unified Presence

The CUP 1000 user OVA generates about 60 IOPS during steady-state. Expect similar peaks as CUCM during backups and upgrades.


Cisco Unified Attendant Consoles

This section provides the IOPS data for Cisco Unified Attendant Consoles (using Enterprise Attendant Console to produce heaviest load). Load test and average operations are represented. These tests use the published OVA template for Cisco Unified Attendant Consoles.

LOAD TESTING

IOPS (Read)
IOPS (Write)

Min Max Average
Min Max Average Operating Conditions
Cisco Unified Attendant Console Server 0 1013.605 0.442
0 1112.87 12.121 5,000 calls per hour, 25 concurrent operators, continuous LDAP sync, full logging
Upgrade 0 320.006 3.691
0 105.001 10.341 Major upgrade
AVERAGE OPERATIONS

IOPS (Read)
IOPS (Write)

Min Max Average
Min Max Average Operating Conditions
Cisco Unified Attendant Console Server 0 11.6 0.092
0 561.05 10.82 Synchronized directory, cached BLF, minimum online changes
Upgrade 0 107.001 5.751
0 50 3.57 Minor upgrade



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


Cisco MediaSense

The following table lists the IOPS numbers for Cisco MediaSense partitions.

Media Partitions
IOPS Specifications

Average IOPS for non-media partitions

1700 ops/sec
Average IOPS for media partitions 50 ops/sec
Average bandwidth for non-media partitions 7300 kbytes/sec
Average bandwidth for media partitions 1000 kbytes/sec




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