crisRosaExam4
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School
Austin Community College District *
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Course
1325
Subject
Industrial Engineering
Date
Jan 9, 2024
Type
docx
Pages
7
Uploaded by Crisheighto
1.
QUESTION 1
In VirtualBox I can assign the needed storage in settings and add a VHD under a controller. In this case, 3, 5, and 7GB respectively. In
Windows we take these and initialize them, where they show up as basic disks in disk management.
2.
We use disk management and click Disk 1 to initiate a striped volume using disks 1, 2, and 3. This method takes a file that would
usually be on one disk, and splits the information into stripes that exist across all the drives. It is like RAID 0, and this method means
that the drives will take the storage amount of the lowest drive times the number of drives- in our case with 3GB as the lowest, and 3 drives, we expect to see 9GB total for the volume K (which we do).
3.
4.
Drive K has a total size of 9GB which is derived from the lowest storage of the drives used to create it, multiplied by the number of drives. IE: 3GB x 3 Drives = 9GB total (in our case)
5.
We can delete the volume by right clicking on the driver in disk management and selecting the appropriate option. 6.
We again click on one of the drives 1-3 to initiate a new volume, in
this case we opt for a mirrored setup and select our 3GB drive and move over our 7GB drive in the helper page. You will notice the
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7GB drive changes to 3GB size, as a mirrored volume will always use the smaller of the two drive amounts (it is impossible to mirror what isn’t there). 7.
8.
The total size of volume L is just 3GB, but we see above that under
disk management it might appear to be more, so why only 3GB? This is because mirroring the drive is meant to be a fault tolerant way of handling data, and so its data is duplicated on both drives equally for redundancy. What is written to Volume L is being written to Disk 1 and Disk 3 at the same time, this is also why the
storage amount of the smaller drive is used when creating the mirrored drive (this is why we see disk 3 have ‘extra,’ the mirror of
disk 1 only needed 3GB and left Disk3 with 4GB remaining). It is RAID1. QUESTION 2
1.
The home directory (for me) is /home/student and can be changed into using cd ~ (in our case we started in home dir)
2.
We can use the mkdir command to create the final_exam directory,
and then use dir to list the directories in our present working directory to confirm we made it. 3.
We can use the same technique to do this, but first we move into the final exam directory using cd. Then we make a new directory with mkdir, and check it just to make sure. 4.
I chose to just move back to home dir using cd ~ , then we can type
gedit to open up our editor, type a line, save it as exam.txt and voila. I use ls to list what’s here and double check exam.txt is alive.
5.
To copy the exam file to question2 directory I use the cp command, feed it the file I want it to copy, and then give it the file path of where to copy to. In this case I use ~ to quickly give home directory, then finish it out with the new directories we made /final_exam/question2
6.
Similar to the copy command above, we use the move command and feed it the file we want to move, and location to move it to. I went ahead and used ls to show the exam.txt file, then used mv to move it to final_exam directory. We can use ls again to show it is now gone from our pwd, and cd into final_exam to find it’s new
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home. 7.
The mv command will take the file or directory from it’s present working directory to the given directory argument from the command line. The cv command will copy the file or directory from it’s present working directory to the given directory argument from the command line, while keeping the original file or directory in the present working directory.