What is a Vmware HA: vSphere High Availability
Restriction of downtime due to server failures or operating system
vSphere High Availability . Vmware HA provides virtual machines on the availability of apps most needed, regardless of the operating system and applications that run on it. It provides ordinary protection and economic tilt against hardware failures and malfunctions in the virtualized operating system environment. It allows :
control virtual machines and vSphere hosts to detect hardware failures and malfunctions of the client operating system ;
without human intervention to restart virtual machines on other hosts in the cluster vSphere server failure ;
reduce downtime of applications by automatically restarting virtual machines in case of detecting a malfunction of the operating system.
Technical details:
VMware HA provides the basis for a high availability environment by controlling virtual machines and hosts in the running . Proven Solution Vmware HA combines scalability , reliability and ease of use
Scalability:
Relationship of master / slave node: this new model of relations between nodes in a cluster replaces the primary and secondary nodes. The available actions are coordinated by a single master node communicates all activities and all states of vCenter Server. This eliminates a great deal of planning to design a high availability environment . Administrators no longer have to worry that the armies are primary nodes and where they are. This is particularly significant when deploying vSphere Vmware HA in a chassis blade cluster environments and under pressure.
Support for the creation of IPv6 networks :
allows IT teams who need space " address " more important to maximize your network infrastructure.
Simplified system implementation :
Quick and easy , such as the implementation of agents scheduled tasks running vSphere Vmware HA and HA configuration functionality .
Reliability:
In case of failure , the directors have other things to do than to ask if their high availability solutions work. Based on factual information supplied by its customers , VMware has introduced capabilities that allow you to rest entirely on Vmware HA:
No dependence à -vis external components:
It does not depend on DNS resolution . The risks of failure of an external component affect the operation of Vmware HA are reduced.
Multiple communication channels :
Vmware HA nodes in a cluster can communicate through the storage subsystem , as well as through the management network . The proliferation of communication channels increases redundancy and to better assess the integrity of a vSphere host and its virtual machines.
Rules affinity non- VM- VM:
It has been optimized to meet the non- affinity rules defined in VM -VM vSphere DRS , thus eliminating the use vMotion migrations after a failover.
Ease of use:
VMware HA enhanced interface allows users to quickly identify the role and position of each node in a cluster. Messages indicating error conditions are also more understandable and easy to apply. If , against all expectations , a problem with VMware HA occurs only take a single log file to find the solution , accelerating the resolution process .
vSphere High Availability . Vmware HA provides virtual machines on the availability of apps most needed, regardless of the operating system and applications that run on it. It provides ordinary protection and economic tilt against hardware failures and malfunctions in the virtualized operating system environment. It allows :
control virtual machines and vSphere hosts to detect hardware failures and malfunctions of the client operating system ;
without human intervention to restart virtual machines on other hosts in the cluster vSphere server failure ;
reduce downtime of applications by automatically restarting virtual machines in case of detecting a malfunction of the operating system.
Technical details:
VMware HA provides the basis for a high availability environment by controlling virtual machines and hosts in the running . Proven Solution Vmware HA combines scalability , reliability and ease of use
Scalability:
Relationship of master / slave node: this new model of relations between nodes in a cluster replaces the primary and secondary nodes. The available actions are coordinated by a single master node communicates all activities and all states of vCenter Server. This eliminates a great deal of planning to design a high availability environment . Administrators no longer have to worry that the armies are primary nodes and where they are. This is particularly significant when deploying vSphere Vmware HA in a chassis blade cluster environments and under pressure.
Support for the creation of IPv6 networks :
allows IT teams who need space " address " more important to maximize your network infrastructure.
Simplified system implementation :
Quick and easy , such as the implementation of agents scheduled tasks running vSphere Vmware HA and HA configuration functionality .
Reliability:
In case of failure , the directors have other things to do than to ask if their high availability solutions work. Based on factual information supplied by its customers , VMware has introduced capabilities that allow you to rest entirely on Vmware HA:
No dependence à -vis external components:
It does not depend on DNS resolution . The risks of failure of an external component affect the operation of Vmware HA are reduced.
Multiple communication channels :
Vmware HA nodes in a cluster can communicate through the storage subsystem , as well as through the management network . The proliferation of communication channels increases redundancy and to better assess the integrity of a vSphere host and its virtual machines.
Rules affinity non- VM- VM:
It has been optimized to meet the non- affinity rules defined in VM -VM vSphere DRS , thus eliminating the use vMotion migrations after a failover.
Ease of use:
VMware HA enhanced interface allows users to quickly identify the role and position of each node in a cluster. Messages indicating error conditions are also more understandable and easy to apply. If , against all expectations , a problem with VMware HA occurs only take a single log file to find the solution , accelerating the resolution process .