Term
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Definition
Failover to alternate processing site (or system)
oPlan this process meticulously
oRestore systems to secure configuration |
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Term
| Cold Site (Failover System) |
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Definition
Not ready to go.
Cheap.
Somewhat difficult to start up. |
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Term
| Warm Site (Failover System) |
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Definition
Has some network devices, but isn't quite ready to start up.
Expensive. |
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Term
| Hot Site (Failover System) |
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Definition
An exact clone or duplicate of your current system.
Very expensive. |
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Term
| Testing Disaster Recovery Steps |
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Definition
•Tabletop exercises
•Simulations
•Review and update plans
•Notify Important Stakeholders and Customers |
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Term
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Definition
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Term
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Definition
•Minimize or eliminate Single Points of Failure
•IT Contingency Planning
•Provide systems that are high availability and fault tolerant |
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Term
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Definition
| Systems and procedures that can provide the same (or nearly) level of service despite “incidents” |
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Term
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Definition
| The costs involved in supplying the service to more users are linear |
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Term
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Definition
| System's ability to handle changes in demand in real time |
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Term
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Definition
| Ability to switch between available processing and data resources to meet service requests |
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Term
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Definition
| Alternate processing sites provide redundancy for damage to resources stored on the primary site |
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Term
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Definition
oStriping with parity
oNo fault tolerance |
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Term
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Definition
oMirroring (2 disks / 1 controller)
oDuplexing (2 disks and controllers) |
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Term
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Definition
| Striping with distributed parity |
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Term
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Definition
| Striping with double parity |
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Term
| RAID 0+1 / RAID 1+0 (RAID 10) |
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Definition
| Mirror of stripes or stripe of mirrors |
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Term
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Definition
| RAID5 sets striped across a RAID0 set |
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Term
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Definition
| How much a fault in recovery/resiliency can be tolerated. |
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Term
| Synchronous (Replication Between Sites) |
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Definition
| (must be written at both sites – expensive) |
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Term
| Asynchronous (Replication Between Sites) |
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Definition
| (one site is primary / master and the others secondary) |
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Term
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Definition
•Enable and test power delivery systems (grid power, Power Distribution Units (PDU), UPS, secondary generators
•Enable and test switch infrastructure then routing appliances and systems
•Enable and test network security appliances
•Enable and test critical network servers
•Enable and test backend and middleware and verify data integrity.
•Enable and test front-end applications
•Enable client workstations and devices and client browser access |
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Term
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Definition
| A security copy that contains only those files that have been altered since the last full backup. |
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Term
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Definition
| Back up since the last Back Up |
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Term
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Definition
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Term
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Definition
| Version control and recovery from corruption / malware |
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Term
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Definition
| Regulatory / business requirements |
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