Archives for July 2014


June IE Patch Blows UP IE for Optimized Golden Images

After updating my golden image I was treated to IE not being able to launch.

The registry key in question comes from the optimization script from VMware for Windows 7/8.

reg ADD “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters” /v EnableSuperfetch /t REG_DWORD /d 0x0 /f

I was able to find the fix on TechNet,

HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management” MoveImages

If you set the key to 1 instead of 0 then reboot the machine you’ll be all fixed up.

Of course I found this after installing\installing IE 2 times first.


VMware Horizon 6 with View – Hosted Shared Virtual Desktops with Nutanix

With Horizon 6 adding support for RDS, Application pools is getting a lot of buzz. With application pools, you can deliver a single application to many users. The application runs on a farm of RDS hosts. However, you can use a farm of hosts to deliver hosted shared desktops (HSVD). I suspect in reality this will shift lots of workload over at least from the task worker use case.

To get HSVD setup with Horizon 6 you have to:

Once the farm is created you can go to desktop pools and pick the appropriate option.

Nutanix Value

1) Quick Clones\VMCaliber Clones – Horizon 6 does not support View Composer for RDS so there could be a potential for lots of storage to be gobbled up. VMCaliber Clones have no negative impact on performance, allow for fast deployment and is available in every Nutanix software edition.

Check out the space saving from quick clones. 84 GB to 12KB

Check out the space saving from quick clones. 84 GB to 12KB

2) Data Locality & Fair Share – Fair Share from 2012 R2 to gives predictable user experience so one user does not negatively impact the performance of another user’s session. Combined with data locality as the cluster scales, IO performance will be consistent and not users can’t steal or bleed the rest of the performance from users on other nodes.

3) Tunable Redundancy Factor – Starting with the Pro Software Edition and up you can allow VM’s to have greater resiliency by creating additional copies of data. Since VMCaliber clones(per vm snaphots\clones) are reducing the foot print the added capacity cost of higher Replication Factor will be mitigated. Now you can lose up to 2 nodes on a 5 node cluster as an example without having to buy additional HDD’s for capacity. Additional block awareness can let you lose an entire block (4 nodes/servers) at the same time without downtime, without requiring any extra space! This all adds up to more capacity for other server workloads in your environment.

Hope see you at VMworld 2014 and talk more on this topic.



Nutanix One-Click Upgrade: Easy As Picture Pages


Dell & Nutanix – Building A Better Foundation for the SDDC

Lots has been written about the business side of the deal and some of the long term strategy on why an OEM deal with Dell is so big for Nutanix. I want to focus my thoughts on the technical side. For me the partnership with Dell is a signaling that the “start-up” phase is over when it comes to shipping Enterprise software. The Dell sales force is massive and would have had the potential to sink Engineering efforts on support and lower the rate of new features if it wasn’t the effort put into the Nutanix Software deployment tool called Foundation. Foundation is the automation tool the deploys and configures the Nutanix software along with your hypervisor of choice(ESXi, Hyper-V, KVM). Foundation gives a common starting point for all deployments: performance, capacity, support, consistency and cluster initialization. Within 45 minutes to 60 minutes, you can have a platform to deploy virtual workloads without worrying missed steps or stealing resources from other projects. This story is complete if it’s Dell box or a Nutanix model. Without this tool in place the Dell agreement could have never of happened.

In the Supermico only world Engineering could get away with hardcoding what type of SSD drive or RAID controller it was looking for. With the Dell coming onboard this really wasn’t going to scale. Foundation was really born out of the need to support multiple hypervisors and the Dell OEM agreement only increased its need.

Foundation and Nutanix has moved to be data driven vs being hard coded. Foundation has a built-in HCL to qualify all components, Hypervisor version, NICS, RAID controllers(Nutanix doesn’t use RAID), motherboards when the software is being laid down. Components are checked against a JSON file and life goes on. It doesn’t matter if it’s IPMI from Supermico or iDRAC from Dell. All alerts can be fired through SNMP or seen visual through the PRISM UI. The customer is the one who wins here.

Engineering has been hard at work for months with Dell before the announcement. The beauty of convergence is that you don’t have to worry about building the solution and find the breaking points, we do that for you. It’s also were software can provide a lot of value when you can understand the hardware you are working with. One HBA was that tabled to be used in some of the newer models had an issue of not turning on the LEDS when the drive went bad. I am sure it worked fine when RAID was involved but since we don’t use RAID it probably was never engineered for it. Nutanix Engineering was able to write the software to provide the serviceability needed. Imagine all the other nasty things that can happen with that one component alone. The adaptability of the NOS gives customers peace of mind as they scale out their environments.

If you believe in the Software-Defined Data Center(SDDC), choice of hypervisor, hardware vendor and networking should allow for VM mobility. While the SDDC might just being getting past 1.0, Nutanix is not sitting still to see what 2.0 will bring. The Dell OEM agreement is a great sling shot towards the future.