D-ISM-FN-23 Exam Dumps : Dell Information Storage and Management Foundations 2023 Exam

Serial Attached SCSI (SAS) is a protocol that offers a cost-effective balance between I/O performance and storage capacity, making it ideal for midrange storage applications. SAS devices provide higher data transfer rates and improved scalability compared to SATA while being more affordable than NVMe solutions, which are typically used for high-performance environments.

References:

• Dell EMC Education Services (https://education.dell.com/content/emc/en-us/home/certification-overview/find-exam/ismv41.html)
• (https://home.pearsonvue.com/dell)

• Total Operational Hours (Monday to Friday): 12 hours/day * 5 days = 60 hours
• Failure Times:
• Total Failure Hours (Monday to Friday): 2 + 5 + 3 + 3 = 13 hours
• Availability Calculation:Availability=(Total Operational Hours−Failure HoursTotal Operational Hours)×100Availability=(Total Operational HoursTotal Operational Hours−Failure Hours​)×100Availability=(60−1360)×100=70Availability=(6060−13​)×100=70

References: Dell ISM V5 Course, Module on Availability and Performance Management.

Continuous Data Protection (CDP) is a data protection method that continuously captures or tracks data modifications and stores changes independently of the primary data. A CDP appliance works by intercepting all writes to the production volume. It splits each write operation into two copies: one copy is written to the production volume, and the other is sent to a separate storage location where the changes are logged. This enables recovery to any point in time and helps ensure data integrity.

References:

• Dell Information Storage and Management V5 course materials, section on CDP
• Dell EMC documentation on Continuous Data Protection