CST 334 Week 7

 

WELCOME TO WEEK 7

Learning Journal

    This week we learned about the main form of persistent data storage in computer systems, which are hard disk drives. The drives consist of sectors that can be read or written. These sectors are numbered 0 to n-1 on a disk with n sectors. They can be viewed as an array of sectors. In order to read or write from the sectors, we use the disk head and arm. The surface of the disk rotates counterclockwise. To understand how a request would be processed, the disk just has to wait for the desired sector to rotate under the disk head. This is what is called rotational delay. However, there are multiple tracks on the disk, and it will seek along the rotations. This will be the seek time. Finally, once it is in the desired sector, the final phase of I/O will be the transfer, where data will either be read or written to the surface. Therefore, the I/O time would be represented by three major components: seek time, rotational delay, and transfer time. It is also important to know that there are two workloads: one is random workload, which reads from random locations on the disk, and the other is sequential workload, which reads a large number of sectors consecutively from the disk.

    There are also more complex versions of disks called RAIDs. RAID is a technique to use multiple disks to build faster, bigger, and more reliable disk systems. Externally, a RAID looks like a disk. However, internally the RAID has multiple disks, memory (both volatile and non-volatile), and processors. The advantages of using a RAID are performance, capacity, and reliability. RAIDs can also tolerate the loss of a disk and keep operating without a problem.

Comments

Post a Comment

Popular posts from this blog

CST 300 Week 1

Image
WELCOME TO WEEK 1           Week 1 out 100 has begun! Im thrilled to share my journey while completing the CS Online program at California State University Monterey Bay. I can't wait to see what the next two years will bring.  https://www.prepbaseballreport.com/upload/school_logos/thumbs/334_thumb.png      This week I read a little bit of the history of CSUMB. It used to be an Army Base, Fort Ord, from the 50's to the 70's. Well known celebrities such as Clint Eastwood and Jimi Hendrix received training at Fort Ord.       I learned a few tips in order to succeed in online learning. The one that stood out the most was the importance of creating an organized schedule and planning study sessions. The online learning environment can make it easy for students to procrastinate. Therefore, engaging with others and logging into canvas at least three times a week should be helpful to maintain focus. Looking forward to next week!   
Read more

CST 300 Week 4

Image
  WELCOME TO WEEK 4 Educational & Career Goals This I learned that it is essential to use these 7 Career Goals in order to succeed:  Self-Assessment Networking Tracking Accomplishments Know Your Worth  Update Your Skills Negotiate Allow for Downtime https://cdn.shortpixel.ai/spai/w_1052+q_lossy+ret_img+to_webp/tipsforlawyers.com/wp-content/uploads/2021/01/Goal-setting-2048x1152.jpg      Tracking accomplishments is one goal that I want to apply to my career. It will help me in the future when I begin applying for jobs. Having everything documented will save me from trying to remember things and possibly leaving things out. This goal will also help me create my portfolio. Another career goal that I want to apply is to update my skills and begin networking. For instance, updating my skills by learning new programming languages, will be beneficial when being considered for interviews. Networking will also be beneficial, as job recruitment has changed from what it used to in the past. 
Read more

CST 300 Week 3

Image
       WELCOME TO WEEK 3 Work Styles & Conflict Styles      This week, I learned about the different work styles there are and conflict styles in action.  Each work style, whether it's about getting it right, getting it done, getting along, or getting appreciation, seeks something distinct. For instance, Get it Right wants the facts, to focus on details, and values being right. Get it Done on the other hand, focuses on deadlines and is not afraid of mistakes. They also focus on tasks being done and speeding up. Get Along is people oriented, they are aware of the needs of others, are social, direct, and want everyone satisfied. Last but not least is Get Appreciation. They tend to like to contribute, give positive feedback, and they like assertiveness.      I also learned about the different conflict styles, which are: Avoiding Forcing Accommodating Compromising Collaborating. https://www.red-thread.com/wp-content/uploads/sites/779/2016/08/Blog_Header_work-style.jpg?w=1770&h=
Read more