11 Responses

  1. forbsy
    forbsy at |

    Hi Michael. There used to be issues where if you used the PVSCSI adapter without considering the workload, performance could actually suffer. Has that been resolved and we don't have to give type of workload any thought – just use it?

  2. Jeff Drury
    Jeff Drury at |


    What underlying storage tier are you using for these VSA tests? The IOPS seem all over the board based on the software drivers. Wondering if everything was constant at the hardware level.

  3. Newsletter: January 18, 2014 | Notes from MWhite

    […] VMware vSphere 5.5 Virtual Storage Adapter Performance This is some fascinating research that Michael has done and it has a surprising finish to it as well.  I just added a note to my todo list in my lab to check out pvscsi.  See the full story here. […]

  4. CloudPhysics – a quick audit | Notes from MWhite

    […] E1000 driver is not always the best one to use with VMs.  There has been some good work lately by Michael Webster to confirm that PVSCSI is a pretty good choice.  So we use VMs with E1000 to check the status of […]

  5. Newsletter: March 21, 2014 | Notes from MWhite

    […] Switching to the PVSCSI controller Steve has an interesting article on getting the PVSCSI controller working in a VM.  He has trouble making it work in SLES but he figured it out.  So good info.  He also has some links to other material on PVSCSI.  Why this interest in this controller?  In a word – Performance.  A good article on this can be found here. […]

  6. Newsletter: May 10, 2014 | Notes from MWhite

    […] use this adapter by default in SAN and NAS.  I think for home labs maybe not.  Here is a good reason why I say […]

  7. VMUG UserCon Sydney: 2015 | ReadySetVirtual.com

    […] Storage Controllers are a critical choice that needs to be correct as the different controllers, you can read more here: More here. […]

  8. SQL SERVER - Virtualized SQL Server Performance and Storage System - Notes from the Field #013 - Journey to SQL Authority with Pinal Dave

    […] for a virtual disk. Michael Webster has a great post demonstrating the performance differences here, and I have a how-to guide that you can use to retrofit your existing I/O-intensive virtual […]

  9. Configuring Database Servers for Optimal Performance | Long White Virtual Clouds

    […] IO’s (OIO) per disk device. Other controllers may have other limits, some can be tuned (see this article), and some can’t. This means, in this example at leasts, that you can issue a maximum of 32 […]

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.