Exam Associate Cloud Engineer topic 1 question 6 discussion

Best Answer is " Archive Storage " https://cloud.google.com/storage/docs/storage-classes But as per the given option next best solution is " Coldline Storage"

D is correct, Coldline Storage COLDLINE 90 days 99.95% in multi-regions and dual-regions 99.9% in regions

Went of searching online and read that a full disaster recovery plan also considers: 1) Recovery Point Objective (RPO): This is the maximum amount of data (measured in time) that you are willing to lose in a disaster. For backups, your RPO dictates how frequently you need to create them. 2) Recovery Time Objective (RTO): This is the maximum amount of time that can pass after a disaster before your application or system must be available again. Your RTO influences how quickly you can restore your backups. hence we would want data to be highly available & also reasonably quick to retrieve when a disaster strikes. Considering that option of Multi-regional Standard Storage makes the most sense.

It doesn't say that we want the most economical solution. Given that multi-regional provides instant failover and availability, I would go with A. Certainly not D, because there is too much of a delay in getting back your data for retrieval.

DR needs to be tested when you do pentesting DR needs to be sanity checked at some frequency depending on the importance of your app. DR needs to be kept up to date with your app changes - regular snapshots and writes. Coldline is too expensive for regular writes and as needed reads. DR needs to be there when something catastrophic happens (or not too bad). If there's a hurricane in North Carolina that knocks google's DC out - and both your app and DR were hosted there - that sucks, ideally you should have had your DR in a couple of different regions. Thus A - multi region is the answer

I believe Coldline Storage is the answer in absence of Archive Storage. Note how the bucket is responsible for disaster recovery, meaning it should already be in a different region from our operational data, therefore making Multi-Regional-Storage unnecessary.

ere's why: Multi-Regional Storage: This option provides the highest level of redundancy and availability. Data is replicated across multiple geographic regions, ensuring that your backups are accessible even in the event of a regional outage. This is crucial for disaster recovery scenarios where you need to restore your application quickly. Why the other options are less suitable: Regional Storage: While more cost-effective than Multi-Regional, Regional Storage stores data within a single geographic region. If that region experiences an outage, your backups will be unavailable. This is not ideal for disaster recovery. Nearline Storage and Coldline Storage: These options are designed for data that is accessed infrequently. They offer lower storage costs but have retrieval fees and higher latency. While suitable for archiving or long-term backups where immediate access isn't critical, they are not the best choice for disaster recovery where rapid restoration is essential. Restoring from Nearline or Coldline would add significant time to your recovery process.

The question focuses on "Disaster Recovery" and not cost. For disaster recovery backups in Google Cloud Storage, Multi-Regional Storage (A) is the recommended option. This storage class ensures data is replicated across multiple geographic regions, providing maximum availability and durability. This redundancy protects against regional outages and aligns with Google’s best practices for disaster recovery, which prioritize cross-region replication to minimize downtime and ensure rapid recovery

Multi-Regional Storage provides high durability and availability by storing your data across multiple locations in different regions, which is ideal for backup and disaster recovery. It is designed for frequently accessed data but can also be suitable for critical backups that may need to be quickly restored across a wide geographic area. Regional Storage stores data in a single region, which may not be as reliable for disaster recovery in the event of a regional failure. Nearline Storage and Coldline Storage are designed for data that is infrequently accessed (e.g., archival purposes), so they are not as suitable for application backups that might need to be accessed relatively quickly in a disaster recovery scenario. Therefore, Multi-Regional Storage is the best choice for disaster recovery backups.

While multi-regional storage ensures data durability and availability, it is not cost-efficient for backup files that are rarely accessed, such as those for disaster recovery. D is the correct answer as Coldline Storage is designed for long-term storage and infrequently accessed data (e.g., disaster recovery backups).

Explanation: Google's recommended best practice for disaster recovery purposes is to store backup data in Multi-Regional Storage. This storage option ensures high availability and durability by replicating your data across multiple geographic locations. This is crucial for disaster recovery scenarios, as it provides resilience against regional outages.

At first I thought it was A, but after reading the discussion and explanation I thought it was D.

Answer is D.

Ans is D. Coldline Storage: If the backups are truly for disaster scenarios and you expect very infrequent access (less than once a year). Here's how other option fits into this context: A. Multi-Regional Storage: This is best for data that is frequently accessed and needs to be highly available. It's ideal for serving content to users globally and for data that is accessed more often. B. Regional Storage: This offers high availability and is suited for storing data that is accessed frequently, but within a specific region. It's good for data used in compute operations in the same region. C. Nearline Storage: This is a low-cost option for storing infrequently accessed data. It's ideal for data that is accessed less than once a month. There are costs associated with accessing the data, so it's better for data that you don't expect to access frequently.

honestly, they should've added archive storage because it is better suited for disaster recovery backup. It is also stated in the doc how archive is better choice than 'coldline storage'. Also in terms of latency, archive will take care of that in events of disaster; as stated in the doc, "In the event of a disaster recovery event, recovery time is key. Cloud Storage provides low latency access to data stored as Archive storage." https://cloud.google.com/storage/docs/storage-classes#archive

Correct Answer: D Reference: https://cloud.google.com/storage/docs/storage-classes#nearline

Multi-regional storage = standard storage used only for objects stored in multi-regiones or dual-regions. Regional storage = standard storage used only for objects stored in regions Refer to https://cloud.google.com/storage/docs/storage-classes#legacy Each of the standard, nearline, coldline, and archive storage classes can have any of the location types, i.e., region, dual region, multi-region. Cold-line storage is the ideal option here according to Google's best practices.