A Chief Information Security Officer has defined resiliency requirements for a new data center architecture. The requirements are as follows:
* Critical fileshares will remain accessible during and after a natural disaster.
* Five percent of hard disks can fail at any given time without impacting the data.
* Systems will be forced to shut down gracefully when battery levels are below 20%.
Which of the following are required to BEST meet these objectives? (Choose three.)
To maintain critical fileshares' accessibility during and after a natural disaster, geographic dispersal is essential to distribute data across different locations, mitigating the risk of a single point of failure in one area. RAID (Redundant Array of Independent Disks) is crucial for ensuring data redundancy and tolerance to hard disk failures, thus addressing the requirement for up to five percent of hard disks to fail without impacting data. Finally, an Uninterruptible Power Supply (UPS) provides a backup power source, allowing systems to shut down gracefully when battery levels are below 20%, preventing data corruption or loss.
Answer D,E,G correct me If I'm wrong
same thought here.
why wouldnt it be NAS instead of Geo dispersal
Network Area Storage is a local solution that can be taken offline during the same natural disaster.
I agree with you and stone
same. RAID covers the 5% disk failure UPS covers the graceful shutdown Geo Disp covers the critical file shares remain available during disaster
Agree with DEG, make sense.
D. RAID (Redundant Array of Independent Disks): RAID provides redundancy and fault tolerance by combining multiple physical disks into a single logical unit. This helps tolerate hard disk failures, as specified in the requirements. E. UPS (Uninterruptible Power Supply): UPS ensures continuous power supply to critical systems during power outages, allowing them to continue functioning and be gracefully shut down during low battery levels. G. Geographic dispersal: Geographic dispersal involves distributing critical systems and data across multiple geographical locations. This strategy enhances resiliency by reducing the impact of regional disasters on the overall infrastructure and maintaining accessibility during and after natural disasters.
D. RAID (Redundant Array of Independent Disks): RAID technology can help achieve both data redundancy and fault tolerance. In this scenario, RAID can help ensure that critical fileshares remain accessible during and after a natural disaster, and it can also accommodate the requirement that 5% of hard disks can fail at any given time without impacting the data. E. UPS (Uninterruptible Power Supply): A UPS system is essential for gracefully shutting down systems when battery levels are below 20%. It provides a backup power source to allow a controlled shutdown of systems to prevent data loss or corruption during power outages. G. Geographic dispersal: Geographic dispersal involves setting up data centers or systems in different locations to ensure continuity of operations during natural disasters. This approach aligns with the objective of critical fileshares remaining accessible during and after a natural disaster.
The options that BEST meet the resiliency requirements for the new data center architecture are: D. RAID: RAID technology can provide redundancy and fault tolerance to prevent data loss and ensure accessibility of critical fileshares even if some hard disks fail. E. UPS: Uninterruptible power supply (UPS) can provide backup power to systems during power outages and ensure that they shut down gracefully when battery levels are below 20%. G. Geographic dispersal: Geographic dispersal can provide redundancy and disaster recovery capabilities by replicating data and services across multiple locations, ensuring that critical fileshares remain accessible during and after a natural disaster. Therefore, options D, E, and G are required to BEST meet the objectives. Options A, B, C, F, H, and I may also provide additional benefits, but they are not essential to meet the stated requirements.
Im confused about the battery under 20% - what system would be running off battery? If the power goes out, does it matter? The device is already working off battery. Wouldn't you want to pass the load to another device if it is about to shut down, in order to keep the service available? "if one of those servers happens to fail, the load balancer recognizes the failure and simply continues to use the remaining servers" This may be wrong but I think D, G, I
DGI is the answer for me. They never said anything relating to different regions and all. With load balancing (using the active-standby), if one of the servers hosting the file critical share fails, it will just move to the standby server
Mitigating natural disasters - Geographic dispersal Mitigating hard disk failures - Appropriate RAID configuration Battery level - UPS
To meet the specified resiliency requirements, the following options would be appropriate: C. NAS (Network Attached Storage): NAS can help ensure that critical file shares remain accessible during and after a natural disaster by providing centralized and accessible file storage. D. RAID (Redundant Array of Independent Disks): RAID configurations provide redundancy and help distribute data across multiple disks. This addresses the requirement that five percent of hard disks can fail without impacting the data. E. UPS (Uninterruptible Power Supply): UPS systems ensure that systems can be shut down gracefully when battery levels are below 20%, addressing the requirement related to power issues. Options A, F, G, H, and I are not directly related to the specified resiliency requirements. Therefore, the three best options to meet the objectives are C (NAS), D (RAID), and E (UPS).
What happens when the NAS is in the data center that is in the natural disaster area? Answer: Access to data is not possible.
* Critical fileshares will remain accessible during and after a natural disaster. * Five percent of hard disks can fail at any given time without impacting the data. * Systems will be forced to shut down gracefully when battery levels are below 20%. Which of the following are required to BEST meet these objectives? (Choose three.) NAS can have RAID, but if that's one of the answers then we don't need to pick both as neither these nor IaC wouldn't cover 20% graceful shutdown, nor would it handle the geographic distribution. Therefore choices D, E & G make the most sense.
CDE Folks. We're talking a single Datacenter here.
"Critical fileshares will remain accessible during and after a natural disaster." A single datacenter would not be able to maintain availability during a natural disaster. You need geographic dispersal to solve this problem.
This is for the design of a new datacenter, not datacenters. Thus it's CDE, RAID can support 5% disk loss.
Geo Dispersal for the 'after disaster' RAID for the '5% hard disks failure' UPS for the 'shutdown gracefully after 20%'
why would it not be snapchots instead of geographical dispersal?
Guys below already explained.
The three options that would BEST meet these objectives are: E. UPS - Uninterruptible power supplies are necessary to keep critical systems operational during power outages or brownouts. D. RAID - Redundant Array of Inexpensive Disks (RAID) is necessary to maintain data availability even when multiple disks fail. G. Geographic dispersal - Geographic dispersal of systems is necessary to ensure continued access to critical fileshares during a natural disaster. The other options are either not directly related to resiliency or not necessary to meet the specific requirements defined by the Chief Information Security Officer.
The requirements can be met by the following three options: RAID (Redundant Array of Independent Disks) can help in maintaining data availability even if one or more disks fail. RAID 5 and RAID 6 are commonly used for this purpose. RAID 5 can tolerate one disk failure while RAID 6 can tolerate two disk failures without losing data. UPS (Uninterruptible Power Supply) can help in gracefully shutting down systems when battery levels are below 20%. Geographic dispersal can help in maintaining data availability during and after a natural disaster.
If the below are just requirements for a new data center architecture, then none of this yet exists. If the question makes no mention of a secondary location, for example, then the reqs for critical fileshare availability would necessitate geographic dispersal to achieve this. * Critical fileshares will remain accessible during and after a natural disaster. - Geographic Dispersal * Five percent of hard disks can fail at any given time without impacting the data. RAID * Systems will be forced to shut down gracefully when battery levels are below 20%. UPS
DGI is the answer for me. They never said anything relating to different regions and all. With load balancing (using the active-standby), if one of the servers hosting the file critical share fails, it will just move to the standby server
In your explanation, are the servers, primary and standby, both in the same location?