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You are the administrator of Windows 2000 Server computer. Your computer has a span volume that consists of areas on three physical hard disks on the server. The three disks support hot swapping. You regularly backup the span volume by using windows backup. One of the disk fail, you replace the disk with a new un-partitioned disk. You want to recover the span volume and disk data as soon as possible. What should you do?
If the mean time to failure of a single disk is 100,000 hours, then the mean time to failure of some disk in an array of 100 disks will be ____________
The mean time to failure of a single disk is 200000 hrs. If an array of disks is using 5 such disks, the mttf of the array is
There are “record-once” versions of the compact disk and digital video disk, which can be written only once; such disks are also called __________ disks.
"The entire universe is mirrored in each unit of the substance except for the difference that it is mirrored only slightly differently from unit to unit". This position is acceptable to
Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:
Disk requests come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at a time when the disk drive is reading from cylinder 20. The seek time is 6 ms/cylinder. The total seek time, if the disk arm scheduling algorithms is first-come-first-served is
Which of the following equation is/are not correct? Consider MWT – Mean Waiting time; ADT – Administrative delay time; LDT – Logistic delay time; MDT – Mean down time; MTTR – Mean time to repair; MTTF – Mean time to failure.
Consider a disk system having 60 cylinders. Disk requests are received by a disk drive for cylinders 10, 22, 20, 2, 40, 6, and 38, in that order. Assuming the disk head is currently at cylinder 20, what is the time taken to satisfy all the requests if it takes 2 milliseconds to move from one cylinder to an adjacent one and Shortest Seek Time First (SSTF) algorithm is used ?
A solid cast iron disk of mass 1000kg is rotating at 350rpm. Diameter of the disk is 1m and time taken to come to stop the disk by brake is 1.6sec.Square of radius of gyration is 0.2. Calculate the angle through which disk rotated during braking period.