13 Responses

  1. Vince
    Vince at |

    Your network is too slow…so buy Nutanix 🙂

    Reply
  2. EtherealMind
    EtherealMind at |

    Data is good, conclusion is somewhat biased. But the point I wanted to make is that you won’t be using 100GBE in the data centre, much more likely 25 or 50GBE because the cost of 100GBE is going to be too high. Mostly because of vendor licensing and overpriced SFP but that is another story.

    Reply
  3. Do IOPS matter? - Virtual Hike | Virtual Hike

    […] wrote a great article about the storage area network and de speeds that are involved with the upcoming flash […]

  4. Nutanix .Next Conference Highlights App Performance | Long White Virtual Clouds

    […] for all flash. I explain why Nutanix has some unique benefits with all flash configurations in Your Network Is Too Slow For Flash And What To Do About It. This article takes a look at some of the highlights from the conference specifically around […]

  5. Michael
    Michael at |

    Does Nutanix start with the 3D XPOINT samples in Q4 2016 ?

    Reply
  6. Sock stuffing – Nutanix Noob
    Sock stuffing – Nutanix Noob at |

    […] VMs will need.  Nutanix’s resident performance secret agent Michael Webster (NPX007) wrote a wonderful blog about the upcoming performance impacts this new hardware will have on networking so I’d encourage you to read it.  The grammar is infinitely better for […]

  7. Michael
    Michael at |

    The other vendors start before.

    bandwidth of DDR4-3200 at 25.6 GB/s, 4 million IOPS, sub-2 microsecond latency

    Up to 4 TB dimms
    http://xitore.com/what-is-nvdimm-x/

    Reply
    1. @vcdxnz001
      @vcdxnz001 at |

      Thanks for your contribution. The biggest problem with NVDIMM is serviceability. When they need to be replaced there is some downtime of the system potentially. With Optane (3D Xpoint) connected through NVMe / PCIe you will be able to hot plug. But we will need PCIe 4 or 5 before we really get decent performance from it. In any case, the network is way to slow for all of this flash. Local to the server is the only place for it.

      Reply
  8. Best Practices for Running SQL Server Virtualized | Long White Virtual Clouds

    […] When it comes to networking you need to consider more than just the user access to the database, you need to consider management workloads including live migration for maintenance and load balancing, backup, monitoring and out of band management. With very large SQL Server VM’s with 512GB and above the live migration network may have some hefty requirements. Especially with very active SQL Server VM’s. I have seen the live migration networks struggle with evacuating a host for maintenance if they were not designed and implemented correctly. If you have hosts with multiple TB of RAM and enough VM’s to occupy that RAM you should consider multiple 10G networks for live migration traffic. Using LACP network configurations can indeed help, as can using Jumbo Frames. As you start adopting 40GbE, 50GbE and above NIC’s the use of Jumbo Frames to increase performance and lower CPU utilization becomes ever more important. You can achieve up to 10% to 15% additional performance by using Jumbo Frames for live migration traffic depending on CPU type and bandwidth of you NIC. But take care as it does need to be implemented properly. It is fortunate that many enterprise class switches now come with Jumbo Frames enabled by default, but you will still need to enable it in your hypervisor and on the life migration virtual NIC. If you are using Jumbo Frames why not enable SQL Server to use a packet size of 8192 bytes instead of the standard 4096 (same size as a database page although there is no direct relationship), 8192 bytes and it fits nicely into the 8972 byte TCP packet (9000 bytes with overhead included) on the wire. Take into consideration the network impacts of any software defined storage solution especially as adopting modern all flash systems because your network may be too slow for flash. […]

  9. Michael
    Michael at |

    Is there a compare test with Intel Optane SSD with Nutanix coming ?

    Reply

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