Explanation
A Dell PowerStore protection policy contains two snapshot rules and one replication rule, and it applies to specific storage resources such as volumes and volume groups. These resources will run only the snapshot rules, not the replication rule. A snapshot rule allows you to create point-in-time copies of the data, which can be used to recover data in case of data loss or corruption. Snapshot rules are applied to specific volumes or volume groups, and only these resources will be backed up with the snapshot. A replication rule allows you to replicate data to a remote site for disaster recovery or data protection. Replication rules are applied to different resources such as Virtual Machines, File Servers, File Systems, etc. In this case, the snapshot rules will be applied to Volumes and Volume Groups, and the replication rule will be applied to other resources such as Virtual Machines, File Servers, File Systems.

Explanation
The minimum recommended Flash capacity is at least 5% of the pool capacity.

Explanation
When using a dynamic pool in Dell Unity XT systems, a certain number of drives are set aside as spare space to ensure that the system can continue to function in the event of a drive failure. The number of drives allocated as spare space depends on the number of drives in the pool, the RAID level in use, and the spare space policy.

Explanation
The technical architect should use the "Planned failover" option from the target site to address the customer's need for a disaster recovery test and to prepare for a data center maintenance window. A planned failover allows the customer to test their disaster recovery plan and make sure that all applications are able to failover to the disaster recovery site without interrupting the production environment. During a planned failover, the data is written to the target site and acknowledged to the host, but the data is not yet cutover to the target site.
This allows the customer to validate the failover and cutover only when they are ready. A "Planned failover" option should be run from the target site, this way all the data that is replicated to the target site is already available and ready to be used in case of a real disaster. A "Failover" option should only be used in case of an unplanned disaster, and the data would be lost in a certain amount of time.

Explanation
The System Designer path of the size tool for Dell Unity XT uses predefined configurations that are based on array model capacity points, random workloads RAID type and drive type. This path is designed to make the sizing process quick and easy, providing recommended configurations that are optimized for specific array models and workloads. It allows the user to select an array model, and then it will provide a set of predefined configurations that meet the desired capacity, performance, and availability requirements.