Table of Contents
Question
A company has a large on-premises tape backup solution. The company has started to use AWS Storage Gateway. The company created a Tape Gateway to replace the existing on-premises hardware. The company’s backup engineer noticed that some of the backup jobs that were supposed to write to AWS failed to run because of a “Not Enough Space” error. The company does not want these failures to happen again. The company also wants to consistently have enough tape available on AWS. What is the MOST operationally efficient way for a SysOps administrator to meet these requirements?
A. Create an AWS Lambda function that runs on an hourly basis and checks how many tapes have available space. If the available tapes are below a certain threshold, provision more.
B. Install the Amazon CloudWatch agent on the on-premises system. Push the log files to a CloudWatch log group. Create an AWS Lambda function that creates more tapes when the “Not Enough Space” error appears. Create a metric filter and a metric alarm that launches the Lambda function.
C. Create an additional Tape Gateway with its own set of tapes. Configure Amazon Simple Notification Service (Amazon SNS) to send a notification to the backup engineer if the tapes that are associated with the primary Tape Gateway do not have available space.
D. Configure tape auto-create on the Tape Gateway. In the auto-create settings, configure a minimum number of tapes, an appropriate barcode prefix, and a tape pool.
Answer
D. Configure tape auto-create on the Tape Gateway. In the auto-create settings, configure a minimum number of tapes, an appropriate barcode prefix, and a tape pool.
Explanation
The correct answer is D. Configure tape auto-create on the Tape Gateway. In the auto-create settings, configure a minimum number of tapes, an appropriate barcode prefix, and a tape pool.
AWS Storage Gateway is a service that enables you to connect your on-premises applications with AWS cloud storage. It provides three types of gateways: File Gateway, Volume Gateway, and Tape Gateway. Tape Gateway is a virtual tape library (VTL) that emulates physical tape drives and media changers, and allows you to store your backup data on virtual tapes in Amazon S3 or Amazon S3 Glacier.
To use Tape Gateway, you need to create a gateway and associate it with one or more tapes. A tape is a logical unit of storage that has a barcode, a size, and a status. You can create tapes manually or automatically using the tape auto-create feature. Tape auto-create allows you to configure your gateway to automatically create new tapes when the existing ones are full or archived. You can specify the minimum number of tapes that you want to have available at any time, the barcode prefix that you want to use for the new tapes, and the tape pool that you want to assign them to. Tape pool is a collection of tapes that have the same storage class and retention settings.
By using tape auto-create, you can ensure that you always have enough tape available on AWS for your backup jobs, and avoid the “Not Enough Space” error. This solution is the most operationally efficient one, as it does not require you to write any custom code or use any additional services. It also leverages the existing functionality and scalability of AWS Storage Gateway and Tape Gateway.
The other options are not correct for the following reasons:
A. Create an AWS Lambda function that runs on an hourly basis and checks how many tapes have available space. If the available tapes are below a certain threshold, provision more.
This option is not operationally efficient, as it requires you to write and maintain a custom Lambda function that will perform the tape creation logic. It also does not leverage the existing functionality and scalability of AWS Storage Gateway and Tape Gateway, especially the tape auto-create feature that already does what you need.
B. Install the Amazon CloudWatch agent on the on-premises system. Push the log files to a CloudWatch log group. Create an AWS Lambda function that creates more tapes when the “Not Enough Space” error appears. Create a metric filter and a metric alarm that launches the Lambda function.
This option is not operationally efficient, as it requires you to install and configure the CloudWatch agent on your on-premises system, as well as write and maintain a custom Lambda function that will perform the tape creation logic. It also does not leverage the existing functionality and scalability of AWS Storage Gateway and Tape Gateway, especially the tape auto-create feature that already does what you need.
C. Create an additional Tape Gateway with its own set of tapes. Configure Amazon Simple Notification Service (Amazon SNS) to send a notification to the backup engineer if the tapes that are associated with the primary Tape Gateway do not have available space.
This option is not correct, as it does not solve the problem of having enough tape available on AWS for your backup jobs. It only creates an additional gateway with its own set of tapes, which may or may not be sufficient for your backup needs. It also does not leverage the existing functionality and scalability of AWS Storage Gateway and Tape Gateway, especially the tape auto-create feature that already does what you need.
Amazon AWS Certified SysOps Administrator – Associate certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Amazon AWS Certified SysOps Administrator – Associate exam and earn Amazon AWS Certified SysOps Administrator – Associate certification.