Chapter 8 – Operations Elements Flashcards
What is the industry service standard for uptime?
The industry service standard for uptime is five nines (99.999%), which equates to less than 6 downtime minutes a year.
What does conditioning involve?
Conditioning involves adjusting the voltage on the line and includes surge protectors.
What is the Uptime Institute (UI)?
The Uptime Institute (UI) is an advisory organization that publishes standards related to data center redundancy, IT services, and certifies data centers for compliance.
What are the characteristics of Tier 1 data centers?
Tier 1 data centers are simplistic with little to no redundancy, labeled as Basic Site Infrastructure, and list minimum requirements for a data center.
What are the minimum requirements for a Tier 1 data center?
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.
What is Tier 2 data center known for?
Tier 2 is known as Redundant Site Infrastructure Capacity Components, suitable for organizations operating in the public cloud with low overhead.
What distinguishes Tier 3 data centers?
Tier 3, known as Concurrently Maintainable Site Infrastructure, has multiple distribution paths and dual power supplies for all IT systems.
What is the benefit of Tier 4 data centers?
Tier 4, or Fault-Tolerant Site Infrastructure, offers redundancy in both IT and electrical components with automatic response capabilities.
What is a Trusted Platform Module (TPM)?
TPM is a specialized chip designed to secure hardware with integrated cryptographic keys, helping to prove user identity and authenticate devices.
What is Tightly Coupled Cluster Storage?
Tightly Coupled Cluster Storage connects all storage devices to a shared physical backplane, enhancing performance as it scales.
What is Loosely Coupled Cluster Storage?
Loosely Coupled Cluster allows greater flexibility with each node being independent and logically connected.
What are the two general ways for disk data protection in a cloud storage cluster?
The two ways are RAID and data dispersion.
What is RAID?
RAID (Redundant Array of Independent Disks) stores data across various disks, allowing recovery if one drive fails.
What is Data Dispersion?
Data Dispersion slices data into chunks that are encrypted with parity bits and written to various drives, allowing recovery of lost data.
What is SSMS (Secret Sharing Made Short)?
SSMS is a method of bit splitting using encryption, information dispersal algorithms, and secret sharing algorithms to distribute fragments.