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23 Cards in this Set

  • Front
  • Back
What is a Cold Site?
A DR site that is not immediately ready for use. Provides the place but not the infrastructure
What is a Warm Site?
A DR site that requires customers to do more work to get them operational
Aka "active/active model"
What is a Hot Site
A DR site that can be operable in hours of failure
Aka "active backup model"
What is Redundancy?
Either duplicated or fail over
Fail over refers to process of reconstructing a system or switching over to other systems
Clustering - many newer OS cluster to provide fail over. Involves multiple systems connected together. If the system fails, other systems take up the slack
May cluster around single disk
What is Fault Tolerence?
Sustain operations in event of a component failure.
Can continue operations even if critical component has failed because of "over engineering" or redundant components and subsystems
Spare parts should always be readily available N+1
Need fault tolerance in your electrical infrastructure as well
Like UPS, backup
What is RAID level 0?
Disk striping, multiple drives mapped together as a single drive. For performance not fault tolerance
What is RAID level 1?
Disk mirroring. Provides 100% redundancy because everything is stored on 2 disks.
With mirroring, one controller card writhes sequentially to each drive
With duplexing, same data written to both cards simultaneously
What is RAID level 3?
Disk striping with a parity disk
Parity information is a value based on the value of the data stored in each location.
Uses the arithmetic value of the data binary. Drive can be replaced and rebuilt using the parity information.
What is RAID level 5?
Disk striping with parity
Parity spread across disks in the array instead of on a single disk
What is an Incremental Backup?
Only info that has changed gets backed up.
What is a Differential Backup?
Backups up any files that have been altered sine the last full backup even if they were backed up at last incremental backup
What is High Availability?
Assurance of sufficient bandwidth and timely access to resources. System will be online, active and responding to requests in a timely mannor.
What is Fault Tolerance?
Ability of system to with stand a certain level of failures, faults or problems and continue to provide reliable service. Server clustering provides fault tolerance.
What are the elements of Business Continuity Plan?
Risk Analysis and Assessment
Business Impact Analysis
Stragegic Planning for Mitigation of Risks
Integration and Validation of the Plan
Training and Awareness
Maintenance and Auditing of Plan.
What is Due Care?
The display of proper security attention in an organization. By designing and implementing security policy, business shows due care
What is Due Dilligence?
Continuation of due care process. Dilligent in maintaining the policy created under due care.
What is Due Process?
Government must respect legal rights of individuals.
What do you consider with Disaster Recovery?
Bring sites back immmediately.
Backup and data restoration
DR plans.
What is Slack Space?
Unused space in disk cluster
What is Structured Walk Through Test?
Review of the plan to ensure all steps are included
What is Simulation Test?
Practice run of the DR plan
What is Parallel Test?
Tests specific systems to ensure their operation at alternate facilities
What is Full Interruption Test?
Includes shutting down the original site and making alternate site operational