IST 346-chapter 5 services

IST 346-chapter 5 services - IST 346 Lecture #5 Services...

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IST 346 Lecture #5 Services
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Services What is a service ? A service is the function that the server provides or the application running on the server. Fundamental services are the ‘basic’ services that most companies use. These can include: Network file services Shared print services Email services Network connectivity Website hosting Database hosting Virtualization hosting (cloud)
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Server vs. Service Server is the hardware, software, disks, CPU’s, etc. Service is the application that runs inside the OS on the server or servers. It may be built on many servers, such as IIS (Microsoft’s web server) or may be a vendor application such as Apache. Could have multiple servers working together to provide the service. Goal is to keep the service running and available to users even when the hardware server requires maintenance (patches are installed and box is rebooted) or is down due to hardware failure.
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Fundamental Services How is this done? Use “Load Balancing” where the service runs on two or more servers at the same time. Automatic failover: no admin involvement. Use “Failover” where there is 1 primary server and 1 backup server so when the primary is down, the backup takes over the primary servers responsibilities. Automatic failover: no admin involvement. 3 rd Party software available to perform this task. Double-take, Neverfail, IPReplicator, • Automatic failover: no admin involvement or can be configured for manual failover where the admin needs to follow a procedure. Cost $$$ Manual server reconfigurations (changing names, IP addresses, etc). Free utilities, no $$$, that allow for ‘smart data coping” • Robocopy. PowerShell scripts, batch files, etc.
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Reliability / Redundancy How reliable does your new service need to be? Does it need be redundant? Key questions to ask:
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IST 346-chapter 5 services - IST 346 Lecture #5 Services...

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