Cloud Service A requires access to Cloud Storage Device A, which contains LUNs A and B. Cloud
Service A is hosted by Virtual Server A, which resides on Hypervisor A on Physical Server A.
Virtual Server B hosts Cloud Service B and Cloud Service C.
Cloud Service Consumer A accesses Cloud Service A (1), which then accesses LUN A or B on Cloud
Storage Device A (2). After receiving the requested data from Cloud Service A, Cloud Service
Consumer A forwards the data to Cloud Service B (3), which then writes it to Cloud Storage Device B
(4).
Cloud Service Consumer A belongs to Organization A,
Organization A uses LUN A and LUN B on Cloud Storage Device A to store their important client
account data. Cloud Storage Device A is a low - performance cloud storage device, which begins to
cause performance issues as more data is added to LUNs A and B and as Cloud Service Consumer A
performs data access requests more frequently. Organization A asks that its cloud architecture be
upgraded to process increased quantities of data and higher volumes of data requests.
Organization A has been leasing a PaaS environment that it used to build Cloud Service A, which it
would like to make available to the general public. Organization A needs to establish a system
capable of monitoring usage of Cloud Service A for billing purposes.
The cloud provider is using a usage data collection and reporting system that gathers information on
Organization A's hosted IT resources approximately ten hours after the time of usage. One day,
Organization A attempts to retrieve information on whether Virtual Server B has available Cloud
Service C instances. They discover that they are unable to obtain the current status of Virtual Server
B. Organization A demands a system that provides instant availability reporting.
Which of the following statements lists the patterns that can be applied to solve these three
requirements and problems?
Question No 2
Cloud Service A is hosted by Virtual Server A. Cloud Storage Device A contains LUN A. Cloud Storage
Device A is a multi - tiered cloud storage device with different types of disk groups that perform at
different levels. LUN A is located in the disk group with the highest performance level.
Cloud Service B is hosted by Virtual Server B. Virtual Servers A and B are hosted by HypervisorA,
which is installed on a physical server (not shown) that resides in Cloud A. A redundant
implementation of LUN A is replicated synchronously to Cloud Storage Device C. Cloud Storage
Device C does not support multiple types of disk groups and resides in Cloud B, which is located in a
different geographic region than Cloud A. Requests that cloud service consumers send to Cloud
Services A and B are intercepted by an automated scaling listener responsible for initiating scaling
activities.
Cloud Service Consumer A issues a request to Cloud Service A (1). To process the request, Cloud
Service A accesses LUN Aon Cloud Storage Device A (2). Cloud Service Consumer B issues a request
to Cloud Service B (3). To process the request, Cloud Service B accesses LUN B on Cloud Storage
Device B (4).
When Cloud Service Consumer A accesses Cloud Service A, there is usually no noticeable
performance fluctuation, even during peak usage periods. However, recently, Cloud Storage Device A
became unexpectedly unavailable, requiring that Cloud Service A access LUN A on Cloud Storage
Device C instead. During the following outage period for Cloud Storage Device A,
Cloud Service Consumer A encounters inconsistent performance from Cloud Service A, including
unusual delays that occur whenever the data requested by Cloud Consumer A isn't cached and
Cloud Service A is required to retrieve the data from LUN A.
Which of the following statements describes a solution that can address this problem?