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Thread: Max CCU for server E5-2620, Ram 16G DDR3, 6 2TB 7200 R RAID 5 running nDVR

  1. #1
    Join Date
    Jul 2014
    Posts
    3

    Default Max CCU for server E5-2620, Ram 16G DDR3, 6 2TB 7200 R RAID 5 running nDVR

    Hi all,
    My server is running only nDVR with profile 2,5M and 4M. How many CCU can my server get, please help me Benchmark Performance.

    My server infomation:
    CPU:1 Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz
    RAM: 16GB DDR3 bus 1333
    HDD: 6 Western Digital RE4 WD2003FYYS 2TB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" RAID 5-> total 7.2T
    10 channels : 8 profile 2.5Mb, 2 profile 4.0Mb.
    4Gbit uplink

    thanks all.

  2. #2
    Join Date
    Sep 2011
    Posts
    1,931

    Default

    Hi,
    The average bitrate assuming all streams are played with an equal number of clients is 2.8 Mbps per client.
    We see loss of around 20% from NICs, (1 Gbps gets you around 800 Mbps) so 4 Gbps should get you around 3.2 Gbps which is 1,140 connections.
    Depending on how many clients are watching live and how many are watching from the nDVR window (not live) you may be limited by the speed of the disks.

    A standard 7200 RPM disk gets around 80 clients playing VOD content. I see you have multiple disks which will increase this number.
    A good guide would be to request load testing tool and see how many connections the server can handle for a live stream (at 2.8 Mbps) and another test for VOD content.

    Our load testing tool only supports RTMP so you can't test the nDVR stream but can get an idea on the limitations of disk and bandwidth which are the usual bottlenecks.
    How to get Flash RTMP Load Test Tool

    Regards,
    Jason

  3. #3
    Join Date
    Jul 2014
    Posts
    3

    Default

    thanks Jason.

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