2.4 Explain important factors of physical installations.

Question 1

What is the installation impact of the correct rack size?

Answer 1

• Standard rack size is 19”
• 1U = One rack unit (1.75” in height)
• Depth can vary and is often determined by the equipment.

Question 2

What is IDF with regards to installation impact?

Answer 2

• Intermediate Distribution Frame
• This is an extension of the MDF (separate room typically).
• Usually found in medium to larger scale environments.

Question 3

What is MDF with regards to installatoin impact?

Answer 3

• Main Distribution Frame
• Central point of the network, usually in the data center
• Termination point for WAN links
• Good testing point for bi-directional traffic

Question 4

What is the installation impact for port-side exhuast/intake?

Answer 4

• Need a way to cool the data center.
• Complex system that needs to be integrated in the fire system.
• Designed as HOT/COLD isles.

Question 5

What is a patch pannel and its installation impact?

Answer 5

• Users on a floor will have a wired connection back to patch pannel; patch pannel will have RJ45 connector for each wired connection and that will then allow you to connected the wired user to a switch using one connection.

Question 6

What is a fiber distribution panel and its installation impact?

Answer 6

• Patch panel at both ends
• Ensure you don’t exceed the bend radius so you don’t break the fiber cable.
• Extra fiber in the patch panel called a “service loop” for future changes.

Question 7

What is a lockable?

Answer 7

• This allows an extra layer of security and control over the components in the racks.

Question 8

What is an UPS and its installation impact?

Answer 8

• Uninterrupted Power Supply
• Short-term, back-up power for when blackouts, brownouts or power surges occur.

Question 9

What is a PDU and its installation impact?

Answer 9

• Power Distribution Unit
• Provide multiple power outlets that often include monitoring and control so you can enable/disable individual outlets.

Question 10

What is power load and its installation impact?

Question 11

What is voltage and its installation impact?

Question 12

What are some environmental factors that could have an impact on the installation of a network and its equipment?

Answer 12

1. Humidity: high humidity promotes condensation, low humidity promotes static discharge; 40-60% is the average for a data center.
2. Fire Suppression: water isn’t the best fire suppression option for a data center (inert gases/chemical agents).
3. Temperature: industry best practices are around 64-81 degrees F.