Your company uses Cloud Storage to store application backup files for disaster recovery purposes. You want to follow Google's recommended practices. Which storage option should you use?
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"
No, archive storage might not be the correct choice as we need to consider the access time. Coldline Storage provides relatively faster access times compared to Archive Storage, which is important if you need to recover data quickly in a disaster scenario.
Coldline Storage: Fits well with disaster recovery use cases where data is infrequently accessed but needs to be available relatively quickly if a disaster occurs.
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.
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
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.
This talks about disaster recovery and you need to be able to retrieve data according to the RTO, except for Nearline all others only guarantee 99.95 availability and you want to avoid retrieval costs. All the other storage classes have a cost associated with it. With that in mind nearline is the best storage class from a DR perspective.
Best answer is D. Coldline Storage.
The choices specifically said Multi-Regional and Regional "Storage".
Multi-Regional Storage is equivalent to Standard Storage and is different to Multi-regional location.
Check additional classes: https://cloud.google.com/storage/docs/storage-classes#legacy
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