High availability services

Uninterrupted operation of IT services

For many enterprises, the uninterrupted operation of IT services is an extremely important element of business risk analysis. The effects of interruptions in access to some systems result in significant financial losses. In addition, downtime is extremely difficult to catch up in companies working around the clock.

The current IT solutions available on the market offer many mechanisms thanks to which we obtain the so-called High Availibility. Exanet provides services to implement HA or improve the availability of IT infrastructure.

Scalability of the solutions used

Exanet engineers most often propose a cluster solution using virtualization and an external disk system based on the Fiber Channel standard and SAN technology. High availability will consist in making the production work of IT systems independent from failure of the server or SAN network element.

The external disk array is highly expandable. The scalability of the cluster is based on the possibility of expansion with new servers. The use of virtualization enables the creation of additional virtual machines on the prepared infrastructure.

Increasing security

In addition, we increase security by configuring the RAID variant selected individually for the company. To increase reliability, we equip the disk array with two controllers.

High availability services

Choosing the HA mechanism for the client’s IT infrastructure

Server virtualization

This solution enables the introduction of high availability at the level of virtual machines. This means that a system consisting of at least two physical machines running virtual operating systems will be resistant to the failure of one physical machine.

By using Microsoft (Hyper-V) or WMware (vSphere) virtualization software, we obtain a takeover of virtual machines that were running on the damaged server. The described effect is practically imperceptible to users.

Virtualization brings many benefits, including: ease of management, the ability to match updates to the specific requirements of a given virtual server, facilitated troubleshooting, effective use of hardware resources, saving the administrator’s time.

Clusters of high availability of services

A cluster is an integrated operation of at least two servers on which services run. Failure of one of the servers does not interrupt the service. It is worth noting that not all IT services can run in a cluster.

The operation of a high availability cluster is based on the fact that each of the servers working in the cluster provides a working environment and in the event of failure of one of the servers, the functional server takes over the function of the failed one.

Redundancy at the service level

Many IT services can provide high availability without being clustered. An example is installing two domain controllers on two physical servers. Both services will “contact” each other and synchronize their data accordingly, and in the event of failure of one of them, the other will take over the handling of inquiries while maintaining uninterrupted functionality.

Examples of other services that use this principle include Microsoft SQL, DHCP, DFS (Distributed File System) as part of the file resource sharing service, and Microsoft Terminal Services (Microsoft Remote Desktop Services).

Choosing the HA mechanism for the client's IT infrastructure

Based on our experience, we choose the optimal high availability mechanism tailored to the client’s IT infrastructure

Stages of implementing high availability of services

Stages of implementing high availability of services

Benefits of HA in the server infrastructure

Benefits of working with Exanet

We approach each order individually, and our goal is to achieve a secure, redundant server system. We build an IT system in which the failure of any element does not result in the loss of its functionality, so we make the functioning of the system independent of the so-called single point of failure.

Benefits of working with Exanet

Please contact us

We are happy to answer your questions and present individually prepared solutions for high availability of services.

tel. 697 118 921, 61 851 2765; e-mail: serwery@exanet.pl

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Our offer also includes

Server security (ESET, WSUS)

We prepare individually selected solutions in the field of anti-virus protection for servers and computers (ESET) for clients. We implement the Windows Server Update Services (WSUS)

Servers and mass storage

We offer: physical servers, disk arrays, UPS, NAS. We provide hardware, software, licenses and service contracts. We tailor the solutions to the company’s needs.

Server virtualization

We implement virtualization on a physical server. We use Microsoft Hyper-V and VMware vSphere. We also provide maintenance and backup services for virtual machines.

File servers and data security

We implement safe and effective file sharing and storage solutions in companies’ IT infrastructure. We prepare file servers.