The risks for service outage

The risks for service outage can be broken down into three categories:

Server: each server has services which are vulnerable to outage. These servers are the Content Server, Index Server, Application Server, Database Server, and the Storage Server.

Systemic: The dependency of each server’s integration(s) with each other is vulnerable to outage. For example, if the content server goes down, the application will be out; if the database or storage goes out, the content server is down, etc.

Disaster: This would mean that the whole server room is down. The disaster scenario would cause the DR system to synch and start up.

The risks of services going down are real and happen most often at the server level. User complaints occur during times when performance is slow which may be a sign that a service is in trouble. Many times integration between DCTM and other services are risky because it is assumed that the other services are always up. If a company is growing, the network will be changing, databases will stumble, even electricity circuits will blow, so keep all of this in mind and in your recovery plans regardless of assurances that this "will never happen".

Risk Matrix by Server

Scope	Server  Outage	Description	Integration Dependency	Risk Level	Monitoring
Systemic	Storage App	Storage Services	Database, Content, Index, App	Low (If HA, redundancy)	monitoring scripts
Systemic	Oracle	Database Server	Content Server	Low (If HA, redundancy)	monitoring scripts
Systemic	LDAP Server	LDAP	App/Content Server	Low (If HA, redundancy)	monitoring scripts
Systemic	DNS Server	DNS	All Servers	Low (If HA, redundancy)	monitoring scripts
Server	DCTM	Repository Services	App Servers, Index Servers	Med (If standalone)	monitoring scripts
Server	DCTM	Java Method Server (JBoss)	Index agents, Jobs, workflow	Med (If standalone)	monitoring scripts
Server	Application	Tomcat		Med (If standalone)	monitoring scripts
Server	Index	xPlore Servers and Agents	App Server Search	Med (If standalone)	monitoring scripts

Disaster Recovery systems are replicated systems which constitute a low but viable risk.