Chapter 8 – Operations Elements Flashcards

1
Q

What is the industry service standard for uptime?

A

The industry service standard for uptime is five nines (99.999%), which equates to less than 6 downtime minutes a year.

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2
Q

What does conditioning involve?

A

Conditioning involves adjusting the voltage on the line and includes surge protectors.

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3
Q

What is the Uptime Institute (UI)?

A

The Uptime Institute (UI) is an advisory organization that publishes standards related to data center redundancy, IT services, and certifies data centers for compliance.

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4
Q

What are the characteristics of Tier 1 data centers?

A

Tier 1 data centers are simplistic with little to no redundancy, labeled as Basic Site Infrastructure, and list minimum requirements for a data center.

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5
Q

What are the minimum requirements for a Tier 1 data center?

A

Minimum requirements include dedicated space for IT systems, UPS system for line conditioning, sufficient cooling systems, and a power generator with at least 12 hours of fuel.

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6
Q

What is Tier 2 data center known for?

A

Tier 2 is known as Redundant Site Infrastructure Capacity Components, suitable for organizations operating in the public cloud with low overhead.

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7
Q

What distinguishes Tier 3 data centers?

A

Tier 3, known as Concurrently Maintainable Site Infrastructure, has multiple distribution paths and dual power supplies for all IT systems.

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8
Q

What is the benefit of Tier 4 data centers?

A

Tier 4, or Fault-Tolerant Site Infrastructure, offers redundancy in both IT and electrical components with automatic response capabilities.

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9
Q

What is a Trusted Platform Module (TPM)?

A

TPM is a specialized chip designed to secure hardware with integrated cryptographic keys, helping to prove user identity and authenticate devices.

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10
Q

What is Tightly Coupled Cluster Storage?

A

Tightly Coupled Cluster Storage connects all storage devices to a shared physical backplane, enhancing performance as it scales.

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11
Q

What is Loosely Coupled Cluster Storage?

A

Loosely Coupled Cluster allows greater flexibility with each node being independent and logically connected.

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12
Q

What are the two general ways for disk data protection in a cloud storage cluster?

A

The two ways are RAID and data dispersion.

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13
Q

What is RAID?

A

RAID (Redundant Array of Independent Disks) stores data across various disks, allowing recovery if one drive fails.

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14
Q

What is Data Dispersion?

A

Data Dispersion slices data into chunks that are encrypted with parity bits and written to various drives, allowing recovery of lost data.

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15
Q

What is SSMS (Secret Sharing Made Short)?

A

SSMS is a method of bit splitting using encryption, information dispersal algorithms, and secret sharing algorithms to distribute fragments.

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