Home > Blogs > VMTN Blog


Top 5 Planet V12n blog posts week 51

Last week I blogged about the lack of View oriented bloggers or articles. This week 3 articles of the top 5 are View centric. That can't be a coincidence can it? Anyway I am in a hurry… so no time for a huge introduction. Here is the top 5:

  • Ian Gibbs – Cleaning up orphaned replicas in View
    If, like me, you have been through all the versions of View Composer
    and the broker since its introduction, various bugs and broken
    recompositions will have left you with a large amount of detritus in
    your VMwareViewComposerReplicaFolder, making it hard to keep an eye on
    the proper operation of the Composer, and in my case, causing a
    datastore to run out of space and subsequent operations to fail. Time
    for a clean up. This is decently documented
    here, but how do you know which ones you can delete…
  • Arne Fokkema – PowerCLI: Find Resourcepool or VMs with Memory Ballooning/Swap Usage
    In this post I will show you how to report Resource Pools and VMs with active Memory Ballooning with the use of the PowerCLI/Ecoshell.
  • Chad Sakac – What’s what in VMware View and VDI Land…
    Let’s say once again that your peak workload is 12 IOps per client, and
    you have 15,000 desktops you want to virtualize.  That’s a total of
    180,000 IOps, which is a very, very large workload for common storage
    configurations.   It would hammer a large CX4, for example.   You would
    need to carefully scale out all the aspects of the design, and consider
    it just like you would consider the system design for a MASSIVE
    database.    Can it be done?  Of course – but there’s a reason why the
    “what’s the single ESX host maximum IOPs” test at the vSphere 4 launch
    (365,000 IOPs) was backended by 3 CX4-960s with 30 solid-state disks.  
    That’s a whackload of IO.
  • Ruben Spruijt / Herco van Brug – Understanding how storage design has a big impact on your VDI!
    It should be obvious by now that calculating the amount of storage
    needed in order to properly host VDI is not to be taken lightly. The
    main bottleneck at the moment is the IOPS. The read/write ratio of the
    IOPS that we see in practice in most of the reference cases demonstrate
    figures of 40/60 percent, sometimes even as skewed as 10/90 percent.
    The fact is that they all demonstrate more writes than reads. And
    because writes are more costly than reads – on any storage system – the
    number of disks required increases accordingly, depending on the exact
    usage of the users and the application.
  • Vittorio Viarengo – Virtualize Production Databases first
    So, how does a database run faster in a virtual environment? Well, most of these databases were running on relatively old and under-utilized machines. By upgrading them to a new modern server running VMware, these customers could allocate more resources to each database instance therefore achieving better performance. Moreover, thanks to VMware HA and FT, they could provide their internal customers with better business continuity without deploying more complex clustering solutions from the database vendors.
This entry was posted in Uncategorized on by .
Duncan Epping

About Duncan Epping

Duncan Epping is Chief Technologist working for VMware. Main responsibility is exploring new possibilities with existing products and features, researching new business opportunities for VMware. Duncan specializes in Software Defined Storage, hyper-converged infrastructures and business continuity / disaster recovery solutions. Duncan has 3 patents pending on the topic of availability, storage and resource management. He was among the first VMware certified design experts (VCDX 007). He is the co-author of several books, including best seller vSphere 5.1 Clustering Technical Deepdive. He is the owner and main author of the leading virtualization blog yellow-bricks.com.