6 Months back I got a case where one customer deployed a Cisco ASA v10 appliance in his on-prem and attached 2 CD drives in that VM and then transferred that VM in vCloud
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
Storage IO control (SIOC) was first introduced in vSphere 4.1 and since then its getting better and better with every release of vSphere. This is one of those feature which easily escapes eye of
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 Virtual Volumes?
From VMware KB-2113013
Virtual Volumes (VVols) is a new integration and management
Few days back I was reading a blog by Tom Fojta about vCloud Availability for vCloud Director and had a quick look into what this product is and how it works. I was busy with
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
Today while working on one of the production issue, I came across situation where I deployed a new vDC from vCloud Air portal, but after the vDC was created successfully, I was not able
The virtual machine compatibility setting determines the virtual hardware available to the virtual machine, which corresponds to the physical hardware available on the host. The latest virtual machine hardware version available yields the best performance
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
When a virtual machine is created, there are number of files that are created alongwith. The most important among them is the .vmx file which is the configuration file of the VM. Whatever settings
In this post we will discuss about the different type of scsi controllers that are available with VMware vSphere and when to use which type of controller. We will discuss following topics in this
VUM Orchestrated upgrades allow you to upgrade the objects in your vSphere inventory in a two-step process: host upgrades followed by virtual machine upgrades. If you want the upgrade process to be fully automated,
In last post we learn how to configure UMDS and how to enable VUM to use shared repository for downloading patches. If you are new to VUM/UMDS and by mistake landed directly on this
Last year I wrote a post on how to install and configure VUM and UMDS, but never got chance to connect UMDS to VUM and ended up downloading patches directly on VUM server via
Yesterday while reading about Enhanced linked mode I stumbled across this blogpost by William Lam where he have demonstrated how to split vCenters which are configured in linked mode.
vCenter Advance settings is used to modify the vpxd.cfg configuration file. To view the configuration options available with Advance settings, login to Web Client and select vCenter server from vCenter Inventory list and navigate
Linked Mode was first intoducedd in vSphere 4.x and it has come a long way with vSphere 6.0.
Enhanced linked mode (ELM) allows administrators to
Prior to vSphere 6.0 U1 it was only possible to repoint vCenter Server which was deployed with external PSC to another PSC in same SSO domain. With vSphere 6.0U1, you can now reconfigure embedded
VMware introduced SSO with vSphere 5.1 and over the release SSO has matured very much. SSO can now be connected to multiple authentication domains, like active directory and ldap, so that it can exchange
In this post we will learn how to decommision/remove a PSC from SSO domain. I am covering steps needed for VCSA in this post. Steps for a Windows based vCenter server are very similar