The management components can along side desktop or RDSH resources, but this is not recommended for most deployments. A Horizon deployment can have one or more resource blocks. A block is a vCenter servers for management and one or more ESXi hosts or clusters for running virtual machines. In the Horizon block and pod architecture, blocks are the vSphere resources that desktops and RDSH servers will run on. Simon Long has a great blog post explaining this in more detail. If the connection servers are not in sync, then there may be errors where two users may have the same floating desktop assigned which will lead to errors. Horizon uses Java Message Bus for communications between the desktops, and this requires extremely low latency (sub-millisecond) to ensure that all connection servers are in sync. These can prevent servers from replicating data and resolving replication conflicts when two connection server have different, which will impact the stability and operation of the environment. AD LDS can be prone to split-brain and USN rollback issues in the event of a network or server outage, especially if a server is operating on it’s own or restored from a backup or snapshot. There are two reasons for this – the AD LDS instance mentioned above and the message bus technology used for communications between the connection servers. They can manage desktops that are deployed into the other site, but all of the connection servers must be located together. If active-active storage technologies are used, the Horizon management components must all be pinned to one site. This includes sites where active-active storage technologies are used, including technologies like VPLEX and Stretched VSAN. VMware does not support Horizon deployments where connection servers in the same pod are spread across sites. Each connection server in the pod has a local copy of the AD LDS instance.Īll connection servers in the pod must be in the same physical datacenter, and Cloud Pod Architecture must be used if a multi-site deployments are required. The AD LDS instance contains all of the common configuration for the Horizon pod, such as vCenter information, Instant Clone AD provisioning accounts, and pool configuration and entitlements.
Horizon uses Microsoft Active Directory Lightweight Directory Services (AD LDS, formerly ADAM) as it’s primary datastore.
Pods can scale out to 7 connection servers supporting up to 10,000 user sessions. A pod is a cluster of Horizon connection servers.
VMware uses the “pod and block” concept to describe the basic Horizon architecture. Architecture and Conceptsīefore we go through the steps to deploy a Horizon Connection Server, let’s cover some basic architecture and concepts around Connection Servers. The Security Server was discontinued in Horizon 8, and it has been replaced by the Unified Access Gateway. The Security Server is a stripped down version of the regular Connection Server designed to provide secure remote access. In previous versions of Horizon, there was another connection server role – the Security Server. That role will not be covered at this time. This role is used to enable TrueSSO, which provides passwordless authentication to desktops in conjunction with VMware Workspace ONE Access. Note: When you run the Connection Server installer, you will see a third role – the TrueSSO Enrollment Server role. The only difference between the two is that the standard connection server is the first server installed in the pod and initializes a new environment while a replica server copies data from a server in an existing environment. The Standard and Replica Connection Servers have the same feature set and perform identically after installation has completed. When you run the Horizon installer, you will see two connection server types – the standard connection server and the replica connection server. They handle primary user authentication against Active Directory, management of desktop pools, provide a portal to access desktop pools and published applications, and broker connections to desktops, shared hosted desktops, and published applications. Connection Servers are one of the most important components in any Horizon environment, and they come in two flavors – the standard connection server and the replica connection server.Ĭonnection Servers handle multiple roles in the Horizon infrastructure.
0 kommentar(er)
