System and Information Integrity (SI)

a. Determine mean time to failure (MTTF) for the following system components in specific environments of operation: [Assignment: organization-defined system components]; and b. Provide substitute system components and a means to exchange active and standby components in accordance with the following criteria: [Assignment: organization-defined MTTF substitution criteria].


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System and Information Integrity (SI)

Take system components out of service by transferring component responsibilities to substitute components no later than [Assignment: organization-defined fraction or percentage] of mean time to failure.


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System and Information Integrity (SI)

[Withdrawn: Incorporated into AC-2, AC-3, AC-5, and AC-6.]


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System and Information Integrity (SI)

Manually initiate transfers between active and standby system components when the use of the active component reaches [Assignment: organization-defined percentage] of the mean time to failure.


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System and Information Integrity (SI)

If system component failures are detected: (a) Ensure that the standby components are successfully and transparently installed within [Assignment: organization-defined time period]; and (b) [Selection (one or more): Activate [Assignment: organization-defined alarm]; Automatically shut down the system; [Assignment: organization-defined action]].


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System and Information Integrity (SI)

Provide [Selection: real-time; near real-time] [Assignment: organization-defined failover capability] for the system.


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System and Information Integrity (SI)

Level N/A

Implement non-persistent [Assignment: organization-defined system components and services] that are initiated in a known state and terminated [Selection (one or more): upon end of session of use; periodically at [Assignment: organization-defined frequency]].


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System and Information Integrity (SI)

Obtain software and data employed during system component and service refreshes from the following trusted sources: [Assignment: organization-defined trusted sources].


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System and Information Integrity (SI)

(a) [Selection: Refresh [Assignment: organization-defined information][Assignment: organization-defined frequency]; Generate [Assignment: organization-defined information] on demand]; and (b) Delete information when no longer needed.


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System and Information Integrity (SI)

Establish connections to the system on demand and terminate connections after [Selection: completion of a request; a period of non-use].


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