IDS 200 Lecture Notes - Lecture 15: Tape Drive, Scalability, Cloud Computing
12 Feb 2020
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Document Summary
Once upon a time, organizations handled their own data: Growth is a nice problem to have but data growth, in particular, brings some major problems: Storage vs. accessibility, e. g. , imagine if all an organization"s data were on one tape drive. Backups, replication, relocation, and consistency checks all require more system resources. Suppose your organization has a major one-day promotion and expects 100x normal site traffic. Neither of these options is very good. Suppose one organization has a lot of excess system capacity. Time (almost since the invention of computers) Hardware: leasing x servers and network capacity. Virtual: leasing capacity but not associated with specific machines. Cloud computing started to catch on around 2010. Remember, resource sharing models had been around for decade. Data volume growing faster than transfer rate. Consequently, feasible to process organizational data locally but not outside the organization. Machine replication means creating a copy of your existing system in the cloud.
