(b) Find any multi-server solution that beats the single server solution. For this to happenthe multi-server solution must have a lower cost and finish the job in the available time. 4. Optimal Rental Decisions in Cloud ComputingAssume that AWS has the following 3 options for renting servers.Fraction ofJob in oneServerDescriptionRentalLow PowerMedium PowerHigh Power$2/hr.$4/hr.$9/hr.Hour1/81/61/3LMNote that if you rent a server for less than one hour, you still must pay the rent for the entirehour.You have a job that must finısh in at most 5 hours. The low-power server can finish 1/8th of thejob in 1 hour, the medium-power server can finish 1/6 of the job in one hour, and the high-power server can finish 1/3rd of the job in one hour.(a) The typical practice used by most firms is to find a single server that can do the work atthe least cost and within the available time. Find the best sıngle server solution-that is,which single server should you use and for how many hours will you rent this server?

When it comes to renting servers in cloud computing, making optimal decisions is crucial to minimize…

Answered: The typical practice used by most firms…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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The site is scheduled to run from 8:00 am to 5:00 pm and has 9,000 citations today. You can start drawing vaccines into syringes at 7:00 a.m. subway. at a rate of 1000 per hour, and each vial provides six syringe draws, with each draw requiring 100 seconds. At 8:00 a.m. patients begin arriving at a rate of 1,250 per hour until noon, when the rate drops to 1,000 per hour for the rest of the day How many people do you need to take out syringes? If the lanes can keep up with the arrival rate, when will they run out of vaccine?
John used to work for a large, well-known retailer. He left that company to go to a smaller company, and in doing so, he discovered that the channel functions were handled very differently in the smaller firm. Looking back at his experience, he noticed that larger firms: a. perform many different channel functions themselves. b. have more control in the channel. c. can be more efficient. d. can save money. e. all of these.
All airplane passengers at the Lake City Regional Airport must pass through a security screening area before proceeding to the boarding area. The airport has three screening stations available, and the facility manager must decide how many to have open at any particular time. The service rate for processing passengers at each screening station is 3.5 passengers per minute. On Monday morning the arrival rate is 4.9 passengers per minute. Assume that processing times at each screening station follow an exponential distribution and that arrivals follow a Poisson distribution. Note: Use Po values from Table 11.4 to answer the questions below. a. Suppose two of the three screening stations are open on Monday morning. Compute the operating characteristics for the screening facility. Round your answer to four decimal places. Po = Round your answers to two decimal places. La = L= W₂ = W = Pw Round your answer to four decimal places. b. Because of space considerations, the facility manager's…
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The medical director of a large emergency clinic faces a problem of providing treatment for patients who arrive at different rates during the day. There are several doctors available to treat patients when needed. If not needed, they can be assigned to other responsibilities (for example, lab tests, reports, x-ray diagnoses) or else rescheduled to work at other hours. It is important to provide quick and responsive treatment, and the medical director feels that, on the average, patients should not have to sit in the waiting area for more than 20 minutes before being seen by a doctor. Patients are treated on a first-come, first-served basis and see the first available doctor after waiting in the queue. The arrival pattern for a typical day is: These arrivals follow a Poisson distribution. The treatment time is 24 minutes on the average with an exponential distribution. Consider the service cost (by doctors) to be $130 per hour. For each patient, the waiting cost when waiting for service…
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In the standard vSphere Switches, every server will have its virtual switch called to handle the traffic within the network at the host level and another virtual switch called which acts as a single virtual switch among many associated hosts as they travel across one or more hosts.
Please see the screenshot for this optimization problem. Thanks.
The manager of a large group of employees must decideif she needs another photocopying machine. The cost of amachine is $40 per 8-hour day whether or not the machineis in use. An average of 4 people per hour need to use thecopying machine. Each person uses the copier for an averageof 10 minutes. Interarrival times and copying times areexponentially distributed. Employees are paid $8 per hour,and we assume that a waiting cost is incurred when a workeris waiting in line or is using the copying machine. Howmany copying machines should be rented?
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8 customers per hour 7. Suppose that the queueing system under consideration fits the M/M/s model with = and μ 10 customers per hour. Use the Excel template to find the optimal number of servers for each of the following cases. (a) Cs = = $100 and Cw = $10. (b) Cs = $100 and Cw = $100. 'W (c) C = $10 and Cw = $100. - For each part, please list the results in a table like below. You just need to submit one Excel file (the one with the optimal number of servers) for each part. E(SC) = Cçs E(WC) = CwL P E(TC)=E(SC) + E (WC) S 1 2 3 4
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The typical practice used by most firms is to find a single server that can do the work at the least cost and within the available time. Find the best single server solution - that is, which single server should you use and for how many hours will you rent this server?