Nan Hu

Chapter 9

1.      Assume that your organization is planning to have an automated server room that functions without human assistance. Such a room is often called a lights-out server room. Describe the fire control system(s) you would install in that room.

The fire control system for a lights-out server room should consist of:

a small element of CO2 to displace the oxygen in the server room.  The basis of this method is to reduce the oxygen level to below 15%.  By reducing oxygen to this level it will suppress a fire.  The design must also consider the safety of personnel and keep oxygen levels to above 12%, this will be sufficient to maintain life within an oxygen depleted environment.  Smoke detection system: it consists of air-aspirating detectors. They are very sophisticated systems and are used in very high-sensitive areas. They work by taking in air, filtering it and moving through a chamber containing a laser beam. If the laser beam is diverted or refracted by the smoke particles, the system is activated.

Flame detection system: it detects the infrared or ultraviolet light produced by an open flame.

2.     Assume you have converted an area of general office space into a server room. Describe the factors you would consider for each of the following components:

††††† Walls and doors: due to the construction of the walls and doors, the security of information assets can sometimes be compromised. In high security areas the firewalls and doors with either mechanical or electrochemical locks should be used.

††††† Access control: for physical security, a secure facility is an ideal location that has been engineered with a number of controls designed to minimize the risk of attacks from physical threats. An organization should consider using as many security controls as possible to secure a server room. Some physical security controls include: walls, fencing, guards, dogs, ID cards, locks, keys, alarms, electronic monitoring, and doors.

††††† Fire detection: Either manual or automatic fire detection systems need to be installed. Manual fire detection systems include human responses, such as calling the fire department, as well as manually activated alarms, such as sprinklers and gaseous systems. Automatic detection systems include thermal detections systems, smoke detection systems, and flame detector. An organization should consider placing one of these fire detections systems depending on its budget

Fire suppression: there are a variety of fire suppression systems commonly used in many organizations including: portal, manual, and automatic apparatus. One or more fire suppression systems should be prepared in case of emergency.

Heating, ventilating, and air conditioning: since the operation of heating, ventilation and air conditioning (HVAC) system can have dramatic impacts on information systems operations and protection, four areas (temperature, filtration, humidity, and static electricity) within HVAC system should be properly managed.

Power quality and distribution: we should ensure that the power supply should be always be stable and have a backup plan for any situations.

3.     Assume you have been asked to review the power needs of a stand-alone computer system that processes important but noncritical data. Although the system does not have to be online at all times, it stores valuable data that could be corrupted if the power system were suddenly interrupted. Which UPS features are most important to such a system? Which type of UPS do you recommend for it?

The four basic configurations of UPS are standby, standby ferroresonant, line-interactive, and true online. Important considerations for UPS systems includeswitch time, the amount of electricity the UPS supplies, and costs. Switch timerefers to the amount of time it takes for the UPS to activate a transfer switch. Thewattage needed to keep the equipment running for a certain period of time shouldbe precisely calculated, which helps in the selection of a proper UPS that meetsthe organizationís power supply needs. Also, the more sophisticated the UPSbecomes, the more costly it is. The best way to select a UPS is to identify thesmallest one necessary to provide the needed support. In this scenario, a standbyferroresonant UPS would be the best selection 

5.  Define the required wattage for a UPS to be used with the following systems:

1) Monitor: 2 amps; CPU: 3 amps; printer: 3 amps

†(2 * 120) + (3 * 120) + (3 * 120) = 960 watts

2) Monitor: 3 amps; CPU: 4 amps; printer: 3 amps

†(3 * 120) + (4 * 120) + (3 * 120) = 1,200 watts

3) Monitor: 3 amps; CPU: 4 amps; printer: 4amps

†(3 * 120) + (4 * 120) + (4 * 120) = 1,320 watts

6.   Search the Web for a UPS that provides the wattage necessary to run the systems described in Exercise 5 for at least 15 minutes during a power outage.

Most of the UPS that have the capability for run the system in at least 15 minutes.

APC Smart-UPS SRT 8000VA RM Rackmount UPS - 8000W - 8000 VA