DRS migration threshold allows you to specify which recommendations are generated and then applied (when the virtual machines involved in the recommendation are in fully automated mode) or shown (if in manual mode). This threshold is also a measure of how much
The evolution of vSphere has forced the hardware vendors to add more enhanced functionalities in server hardware in order to bring the best out of virtualization. Enhanced vMotion Compatibility comes into picture when a all Esxi hosts in a cluster are not
What is vSphere Distributed Power Management (DPM)
Consolidation of physical servers into virtual machines that share host physical resources can result in significant reductions in the costs associated with hardware maintenance and power consumption.
vSphere Distributed Power Management provides
One of the advantages which virtualization brought with itself was “POWER SAVINGS” as it enabled administrators to consolidate workloads on fewer number of physical servers and thus save some power and reduce carbon footprint in the datacenter. Sunny Dua rightly mentioned in
The ESXi Shell provides access to maintenance commands and other configuration options. Esxi shell and SSH comes in handy when there are certain tasks that can’t be done through the Web Client or other remote management tools.
Enabling local and remote
To enhance the security measures in a virtualized environment, it is often advisable to limit direct access to Esxi hosts and this is when lockdown mode concept comes into picture. Lockdown mode is used on Esxi hosts in order to improve
When DRS is disabled on a cluster, it removes all the resource pools that are part of the cluster and the resource pool hierarchy and affinity rules are not re-established when DRS is turned back on.
Now if you really want to
You can export vSphere distributed switch and distributed port group configurations to a file. The file preserves valid network configurations, enabling distribution of these configurations to other deployments.
This functionality is available only with the vSphere Web Client 5.1 or
In a vSphere environment where vDS is being used for networking connectivity, there are several options available for what should be the type of port binding that is to be used for a portgroup. Have you ever wondered which Port Binding setting is most
In this post we will discuss about what is NIOC and why we need it. We will also configure NIOC in lab.
What is Network IO Control (NIOC)?
Network I/O Control (NIOC) was first introduced with vSphere 4.1 and it
What is NIC Teaming and why you need it?
Uplinks is what provides conenctivity between a vSwitch and a physical switch. This uplinks passes all the traffic generated by virtual machines or the vmkernel adapters.
But what happens when that
In physical networking space, switches are connected to one or more adjacent switch forming a web of switches which can talk to each other. This web of switches is referred as “neighbourhood of switching”.
Virtual switches (standard or vDS) are connected
During my VCAP6-Deploy exam preparation, I found this topic quiet a bit interesting and difficult as well as I have never ever laid my hands on Quality of Service type of thinks in respect of networking. Also my concepts were not very
While working through VCAP6-Deploy blueprint I stumbled upon topic TCP/IP stack configuration. I have seen this many times in my lab while configuring networking stuffs and had a basic idea of what is the purpose of using custom TCP/IP stack. Suprisingly this
vSphere storage profiles were first introduced with vSphere 5, then renamed to storage policies with the release of vSphere 5.5.
There is a a very cool feature available in vSphere 6 which allows you to tag (mark) a devise as SSD/Flash device. Some time ESXi host do not recognize certain devices as
This will be a very short post on how to export vDS configuration from one vCenter and importing it in another vCenter. Lets get started.
What is Multipathing?
Multipathing is having more than one path to storage devices from your server. At a given time more than one paths are
In a shared storage environment, when multiple hosts access the same VMFS datastore, specific locking mechanisms are used. These locking mechanism prevent multiple hosts from concurrently writing to the metadata and ensure that no
What is Datastore Cluster?
A datastore cluster is a collection of datastores with shared resources and a shared management interface. Datastore clusters are to datastores
What is vSphere Flash Read Cache aka vFlash?
Flash Read Cache helps in accelerating virtual machine performance through the use of flash devices residing in
My first interaction with iSCSI and port binding was back in 2013 when we introduced an iSCSI based SAN (Dell MD3200i) in our environment. We were a small SMB entity and introduction of SAN
When you create a new datastore in vSphere, each VMFS volume is assigned a unique identifier (UUID) and this UUID info is stored in a metadata file as unique hexadecimal number.
Raw Device Mapping aka RDM is a way for providing virtual machine direct access to LUN on the SAN storage. The LUN presented to VM can be then formatted with any filesystem like NTFS
VMware vSphere hot add is a feature that allows vSphere administrators to increase the RAM and CPU capacity of a running virtual machine on the fly. This feature is one of my favourites (second