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23 Cards in this Set
- Front
- Back
What is a Cold Site?
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A DR site that is not immediately ready for use. Provides the place but not the infrastructure
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What is a Warm Site?
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A DR site that requires customers to do more work to get them operational
Aka "active/active model" |
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What is a Hot Site
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A DR site that can be operable in hours of failure
Aka "active backup model" |
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What is Redundancy?
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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 |
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What is Fault Tolerence?
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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 |
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What is RAID level 0?
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Disk striping, multiple drives mapped together as a single drive. For performance not fault tolerance
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What is RAID level 1?
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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 |
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What is RAID level 3?
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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. |
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What is RAID level 5?
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Disk striping with parity
Parity spread across disks in the array instead of on a single disk |
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What is an Incremental Backup?
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Only info that has changed gets backed up.
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What is a Differential Backup?
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Backups up any files that have been altered sine the last full backup even if they were backed up at last incremental backup
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What is High Availability?
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Assurance of sufficient bandwidth and timely access to resources. System will be online, active and responding to requests in a timely mannor.
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What is Fault Tolerance?
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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.
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What are the elements of Business Continuity Plan?
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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. |
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What is Due Care?
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The display of proper security attention in an organization. By designing and implementing security policy, business shows due care
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What is Due Dilligence?
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Continuation of due care process. Dilligent in maintaining the policy created under due care.
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What is Due Process?
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Government must respect legal rights of individuals.
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What do you consider with Disaster Recovery?
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Bring sites back immmediately.
Backup and data restoration Redundancey SLAs DR plans. |
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What is Slack Space?
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Unused space in disk cluster
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What is Structured Walk Through Test?
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Review of the plan to ensure all steps are included
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What is Simulation Test?
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Practice run of the DR plan
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What is Parallel Test?
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Tests specific systems to ensure their operation at alternate facilities
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What is Full Interruption Test?
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Includes shutting down the original site and making alternate site operational
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