Redundancy is the duplication of critical components or functions of a system with the intention of increasing reliability of the system, usually in the case of a backup or fail-safe.

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6answers
786 views

Server Failover Scenario

I've got two Dell PowerEdge 2950 servers. In order to (hopefully) eliminate any downtime, I must implement a solution to detect and adjust to component failures, environment failures, etc ... the ...
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4answers
11k views

Split your DHCP scope among multiple servers?

I want to implement a redundancy solution. I have two subnets all windows XP machines - each with their own DHCP server - joined by a bridge. Currently - all machines get DHCP leases from the one ...
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5answers
2k views

Local to Remote Webserver Failover

Short and sweet, I don't suppose you'll need more detail than this: We host our website on an in-house webserver. A catastrophe has and will happen again where communication from the web into/out ...
2
votes
5answers
727 views

Self-healing archive file format with redundancy

When I used RAR, I had an option to add some extra recovery data in order to be able to cope with a not-perfect medium (think floppy disks). It saved my day several times, specially when dealing with ...
13
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21answers
5k views

When is RAID worth the trouble?

In our shop we're faithfully using RAID in all our workstations, probably just because that seems to be the way it ought to be done. I'm talking about workstations for scientific simulations, using ...
2
votes
6answers
230 views

Upgrade server software without blackout period

Say I've got a web application running on a Linux VPS box. In order to apply kernel upgrades and some security fixes, I'll need to reboot the server. During this period, the server isn't reachable. ...
1
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2answers
484 views

Data Backup redundancy/backups

I am looking at setting up a backup solution... well including in my backup solution actually... an external harddrive on my main file server. I then use something like Microsoft SyncToy to 'sync' ...
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3answers
540 views

SQL Server clustering options

Can anyone give an high-level overview of the options available for SQL Server clustering, their pros and cons? Is it better to use Microsoft Clustering services or SQL Server native clustering? Does ...